Merge branch 'v3.16-next/clk-s3c24xx-3' into v3.16-next/cleanup-samsung

Documentation/devicetree/bindings/clock/samsung,s3c2410-clock.txt

+* Samsung S3C2410 Clock Controller
+
+The S3C2410 clock controller generates and supplies clock to various controllers
+within the SoC. The clock binding described here is applicable to the s3c2410,
+s3c2440 and s3c2442 SoCs in the s3c24x family.
+
+Required Properties:
+
+- compatible: should be one of the following.
+  - "samsung,s3c2410-clock" - controller compatible with S3C2410 SoC.
+  - "samsung,s3c2440-clock" - controller compatible with S3C2440 SoC.
+  - "samsung,s3c2442-clock" - controller compatible with S3C2442 SoC.
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- #clock-cells: should be 1.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. Some of the clocks are available only
+on a particular SoC.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/samsung,s3c2410-clock.h header and can be used in device
+tree sources.
+
+External clocks:
+
+The xti clock used as input for the plls is generated outside the SoC. It is
+expected that is are defined using standard clock bindings with a
+clock-output-names value of "xti".
+
+Example: Clock controller node:
+
+	clocks: clock-controller@4c000000 {
+		compatible = "samsung,s3c2410-clock";
+		reg = <0x4c000000 0x20>;
+		#clock-cells = <1>;
+	};
+
+Example: UART controller node that consumes the clock generated by the clock
+  controller (refer to the standard clock bindings for information about
+  "clocks" and "clock-names" properties):
+
+	serial@50004000 {
+		compatible = "samsung,s3c2440-uart";
+		reg = <0x50004000 0x4000>;
+		interrupts = <1 23 3 4>, <1 23 4 4>;
+		clock-names = "uart", "clk_uart_baud2";
+		clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>;
+		status = "disabled";
+	};

Documentation/devicetree/bindings/clock/samsung,s3c2412-clock.txt

+* Samsung S3C2412 Clock Controller
+
+The S3C2412 clock controller generates and supplies clock to various controllers
+within the SoC. The clock binding described here is applicable to the s3c2412
+and s3c2413 SoCs in the s3c24x family.
+
+Required Properties:
+
+- compatible: should be "samsung,s3c2412-clock"
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- #clock-cells: should be 1.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. Some of the clocks are available only
+on a particular SoC.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/s3c2412.h header and can be used in device
+tree sources.
+
+External clocks:
+
+There are several clocks that are generated outside the SoC. It is expected
+that they are defined using standard clock bindings with following
+clock-output-names:
+ - "xti" - crystal input - required,
+ - "ext" - external clock source - optional,
+
+Example: Clock controller node:
+
+	clocks: clock-controller@4c000000 {
+		compatible = "samsung,s3c2412-clock";
+		reg = <0x4c000000 0x20>;
+		#clock-cells = <1>;
+	};
+
+Example: UART controller node that consumes the clock generated by the clock
+  controller (refer to the standard clock bindings for information about
+  "clocks" and "clock-names" properties):
+
+	serial@50004000 {
+		compatible = "samsung,s3c2412-uart";
+		reg = <0x50004000 0x4000>;
+		interrupts = <1 23 3 4>, <1 23 4 4>;
+		clock-names = "uart", "clk_uart_baud2", "clk_uart_baud3";
+		clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
+			 <&clocks SCLK_UART>;
+		status = "disabled";
+	};

Documentation/devicetree/bindings/clock/samsung,s3c2443-clock.txt

+* Samsung S3C2443 Clock Controller
+
+The S3C2443 clock controller generates and supplies clock to various controllers
+within the SoC. The clock binding described here is applicable to all SoCs in
+the s3c24x family starting with the s3c2443.
+
+Required Properties:
+
+- compatible: should be one of the following.
+  - "samsung,s3c2416-clock" - controller compatible with S3C2416 SoC.
+  - "samsung,s3c2443-clock" - controller compatible with S3C2443 SoC.
+  - "samsung,s3c2450-clock" - controller compatible with S3C2450 SoC.
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- #clock-cells: should be 1.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. Some of the clocks are available only
+on a particular SoC.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/s3c2443.h header and can be used in device
+tree sources.
+
+External clocks:
+
+There are several clocks that are generated outside the SoC. It is expected
+that they are defined using standard clock bindings with following
+clock-output-names:
+ - "xti" - crystal input - required,
+ - "ext" - external clock source - optional,
+ - "ext_i2s" - external I2S clock - optional,
+ - "ext_uart" - external uart clock - optional,
+
+Example: Clock controller node:
+
+	clocks: clock-controller@4c000000 {
+		compatible = "samsung,s3c2416-clock";
+		reg = <0x4c000000 0x40>;
+		#clock-cells = <1>;
+	};
+
+Example: UART controller node that consumes the clock generated by the clock
+  controller (refer to the standard clock bindings for information about
+  "clocks" and "clock-names" properties):
+
+	serial@50004000 {
+		compatible = "samsung,s3c2440-uart";
+		reg = <0x50004000 0x4000>;
+		interrupts = <1 23 3 4>, <1 23 4 4>;
+		clock-names = "uart", "clk_uart_baud2",
+				"clk_uart_baud3";
+		clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
+				<&clocks SCLK_UART>;
+		status = "disabled";
+	};

arch/arm/boot/dts/s3c2416-smdk2416.dts

@@ -19,6 +19,19 @@
 		reg =  <0x30000000 0x4000000>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		xti: xti {
+			compatible = "fixed-clock";
+			clock-frequency = <12000000>;
+			clock-output-names = "xti";
+			#clock-cells = <0>;
+		};
+	};
+
 	serial@50000000 {
 		status = "okay";
 		pinctrl-names = "default";

arch/arm/boot/dts/s3c2416.dtsi

@@ -8,6 +8,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <dt-bindings/clock/s3c2443.h>
 #include "s3c24xx.dtsi"
 #include "s3c2416-pinctrl.dtsi"
 
@@ -28,26 +29,53 @@
 		compatible = "samsung,s3c2416-irq";
 	};
 
+	clocks: clock-controller@0x4c000000 {
+		compatible = "samsung,s3c2416-clock";
+		reg = <0x4c000000 0x40>;
+		#clock-cells = <1>;
+	};
+
 	pinctrl@56000000 {
 		compatible = "samsung,s3c2416-pinctrl";
 	};
 
+	timer@51000000 {
+		clocks = <&clocks PCLK_PWM>;
+		clock-names = "timers";
+	};
+
 	serial@50000000 {
 		compatible = "samsung,s3c2440-uart";
+		clock-names = "uart", "clk_uart_baud2",
+				"clk_uart_baud3";
+		clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
+				<&clocks SCLK_UART>;
 	};
 
 	serial@50004000 {
 		compatible = "samsung,s3c2440-uart";
+		clock-names = "uart", "clk_uart_baud2",
+				"clk_uart_baud3";
+		clocks = <&clocks PCLK_UART1>, <&clocks PCLK_UART1>,
+				<&clocks SCLK_UART>;
 	};
 
 	serial@50008000 {
 		compatible = "samsung,s3c2440-uart";
+		clock-names = "uart", "clk_uart_baud2",
+				"clk_uart_baud3";
+		clocks = <&clocks PCLK_UART2>, <&clocks PCLK_UART2>,
+				<&clocks SCLK_UART>;
 	};
 
 	serial@5000C000 {
 		compatible = "samsung,s3c2440-uart";
 		reg = <0x5000C000 0x4000>;
 		interrupts = <1 18 24 4>, <1 18 25 4>;
+		clock-names = "uart", "clk_uart_baud2",
+				"clk_uart_baud3";
+		clocks = <&clocks PCLK_UART3>, <&clocks PCLK_UART3>,
+				<&clocks SCLK_UART>;
 		status = "disabled";
 	};
 
@@ -55,6 +83,10 @@
 		compatible = "samsung,s3c6410-sdhci";
 		reg = <0x4AC00000 0x100>;
 		interrupts = <0 0 21 3>;
+		clock-names = "hsmmc", "mmc_busclk.0",
+				"mmc_busclk.2";
+		clocks = <&clocks HCLK_HSMMC0>, <&clocks HCLK_HSMMC0>,
+				<&clocks MUX_HSMMC0>;
 		status = "disabled";
 	};
 
@@ -62,18 +94,28 @@
 		compatible = "samsung,s3c6410-sdhci";
 		reg = <0x4A800000 0x100>;
 		interrupts = <0 0 20 3>;
+		clock-names = "hsmmc", "mmc_busclk.0",
+				"mmc_busclk.2";
+		clocks = <&clocks HCLK_HSMMC1>, <&clocks HCLK_HSMMC1>,
+				<&clocks MUX_HSMMC1>;
 		status = "disabled";
 	};
 
 	watchdog@53000000 {
 		interrupts = <1 9 27 3>;
+		clocks = <&clocks PCLK_WDT>;
+		clock-names = "watchdog";
 	};
 
 	rtc@57000000 {
 		compatible = "samsung,s3c2416-rtc";
+		clocks = <&clocks PCLK_RTC>;
+		clock-names = "rtc";
 	};
 
 	i2c@54000000 {
 		compatible = "samsung,s3c2440-i2c";
+		clocks = <&clocks PCLK_I2C0>;
+		clock-names = "i2c";
 	};
 };

arch/arm/mach-s3c24xx/Kconfig

@@ -18,6 +18,18 @@ config PLAT_S3C24XX
 	help
 	  Base platform code for any Samsung S3C24XX device
 
+config S3C2410_COMMON_CLK
+	bool
+	help
+	  Build the s3c2410 clock driver based on the common clock framework.
+
+config S3C2410_COMMON_DCLK
+	bool
+	select REGMAP_MMIO
+	help
+	  Temporary symbol to build the dclk driver based on the common clock
+	  framework.
+
 menu "SAMSUNG S3C24XX SoCs Support"
 
 comment "S3C24XX SoCs"
@@ -25,9 +37,10 @@ comment "S3C24XX SoCs"
 config CPU_S3C2410
 	bool "SAMSUNG S3C2410"
 	default y
+	select COMMON_CLK
 	select CPU_ARM920T
 	select CPU_LLSERIAL_S3C2410
-	select S3C2410_CLOCK
+	select S3C2410_COMMON_CLK
 	select S3C2410_DMA if S3C24XX_DMA
 	select ARM_S3C2410_CPUFREQ if ARM_S3C24XX_CPUFREQ
 	select S3C2410_PM if PM
@@ -38,8 +51,10 @@ config CPU_S3C2410
 
 config CPU_S3C2412
 	bool "SAMSUNG S3C2412"
+	select COMMON_CLK
 	select CPU_ARM926T
 	select CPU_LLSERIAL_S3C2440
+	select S3C2412_COMMON_CLK
 	select S3C2412_DMA if S3C24XX_DMA
 	select S3C2412_PM if PM
 	help
@@ -47,20 +62,21 @@ config CPU_S3C2412
 
 config CPU_S3C2416
 	bool "SAMSUNG S3C2416/S3C2450"
+	select COMMON_CLK
 	select CPU_ARM926T
 	select CPU_LLSERIAL_S3C2440
 	select S3C2416_PM if PM
-	select S3C2443_COMMON
+	select S3C2443_COMMON_CLK
 	select S3C2443_DMA if S3C24XX_DMA
-	select SAMSUNG_CLKSRC
 	help
 	  Support for the S3C2416 SoC from the S3C24XX line
 
 config CPU_S3C2440
 	bool "SAMSUNG S3C2440"
+	select COMMON_CLK
 	select CPU_ARM920T
 	select CPU_LLSERIAL_S3C2440
-	select S3C2410_CLOCK
+	select S3C2410_COMMON_CLK
 	select S3C2410_PM if PM
 	select S3C2440_DMA if S3C24XX_DMA
 	help
@@ -68,9 +84,10 @@ config CPU_S3C2440
 
 config CPU_S3C2442
 	bool "SAMSUNG S3C2442"
+	select COMMON_CLK
 	select CPU_ARM920T
 	select CPU_LLSERIAL_S3C2440
-	select S3C2410_CLOCK
+	select S3C2410_COMMON_CLK
 	select S3C2410_DMA if S3C24XX_DMA
 	select S3C2410_PM if PM
 	help
@@ -83,27 +100,16 @@ config CPU_S3C244X
 
 config CPU_S3C2443
 	bool "SAMSUNG S3C2443"
+	select COMMON_CLK
 	select CPU_ARM920T
 	select CPU_LLSERIAL_S3C2440
-	select S3C2443_COMMON
+	select S3C2443_COMMON_CLK
 	select S3C2443_DMA if S3C24XX_DMA
-	select SAMSUNG_CLKSRC
 	help
 	  Support for the S3C2443 SoC from the S3C24XX line
 
 # common code
 
-config S3C2410_CLOCK
-	bool
-	help
-	  Clock code for the S3C2410, and similar processors which
-	  is currently includes the S3C2410, S3C2440, S3C2442.
-
-config S3C24XX_DCLK
-	bool
-	help
-	  Clock code for supporting DCLK/CLKOUT on S3C24XX architectures
-
 config S3C24XX_SMDK
 	bool
 	help
@@ -258,8 +264,8 @@ config ARCH_BAST
 	bool "Simtec Electronics BAST (EB2410ITX)"
 	select ISA
 	select MACH_BAST_IDE
+	select S3C2410_COMMON_DCLK if COMMON_CLK
 	select S3C2410_IOTIMING if ARM_S3C2410_CPUFREQ
-	select S3C24XX_DCLK
 	select S3C24XX_SIMTEC_NOR
 	select S3C24XX_SIMTEC_PM if PM
 	select S3C24XX_SIMTEC_USB
@@ -340,7 +346,7 @@ config MACH_TCT_HAMMER
 config MACH_VR1000
 	bool "Thorcom VR1000"
 	select MACH_BAST_IDE
-	select S3C24XX_DCLK
+	select S3C2410_COMMON_DCLK if COMMON_CLK
 	select S3C24XX_SIMTEC_NOR
 	select S3C24XX_SIMTEC_PM if PM
 	select S3C24XX_SIMTEC_USB
@@ -359,6 +365,11 @@ config S3C2412_PM_SLEEP
 
 if CPU_S3C2412
 
+config S3C2412_COMMON_CLK
+	bool
+	help
+	  Build the s3c2412 clock driver based on the common clock framework.
+
 config CPU_S3C2412_ONLY
 	bool
 	depends on !CPU_S3C2410 && !CPU_S3C2416 && !CPU_S3C2440 && \
@@ -519,8 +530,8 @@ comment "S3C2440 Boards"
 config MACH_ANUBIS
 	bool "Simtec Electronics ANUBIS"
 	select HAVE_PATA_PLATFORM
+	select S3C2410_COMMON_DCLK if COMMON_CLK
 	select S3C2440_XTAL_12000000
-	select S3C24XX_DCLK
 	select S3C24XX_SIMTEC_PM if PM
 	select S3C_DEV_USB_HOST
 	help
@@ -558,9 +569,9 @@ config MACH_NEXCODER_2440
 
 config MACH_OSIRIS
 	bool "Simtec IM2440D20 (OSIRIS) module"
+	select S3C2410_COMMON_DCLK if COMMON_CLK
 	select S3C2410_IOTIMING if ARM_S3C2440_CPUFREQ
 	select S3C2440_XTAL_12000000
-	select S3C24XX_DCLK
 	select S3C24XX_SIMTEC_PM if PM
 	select S3C_DEV_NAND
 	select S3C_DEV_USB_HOST
@@ -629,9 +640,9 @@ config MACH_RX1950
 	bool "HP iPAQ rx1950"
 	select I2C
 	select PM_H1940 if PM
+	select S3C2410_COMMON_DCLK if COMMON_CLK
 	select S3C2410_IOTIMING if ARM_S3C2440_CPUFREQ
 	select S3C2440_XTAL_16934400
-	select S3C24XX_DCLK
 	select S3C24XX_PWM
 	select S3C_DEV_NAND
 	help
@@ -641,11 +652,11 @@ endif	# CPU_S3C2442
 
 if CPU_S3C2443 || CPU_S3C2416
 
-config S3C2443_COMMON
+config S3C2443_COMMON_CLK
 	bool
 	help
-	  Common code for the S3C2443 and similar processors, which includes
-	  the S3C2416 and S3C2450.
+	  Temporary symbol to build the clock driver based on the common clock
+	  framework.
 
 config S3C2443_DMA
 	bool

arch/arm/mach-s3c24xx/Makefile

@@ -21,22 +21,22 @@ obj-$(CONFIG_S3C2410_DMA)	+= dma-s3c2410.o
 obj-$(CONFIG_S3C2410_PLL)	+= pll-s3c2410.o
 obj-$(CONFIG_S3C2410_PM)	+= pm-s3c2410.o sleep-s3c2410.o
 
-obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o clock-s3c2412.o
+obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o
 obj-$(CONFIG_S3C2412_DMA)	+= dma-s3c2412.o
 obj-$(CONFIG_S3C2412_PM)	+= pm-s3c2412.o
 obj-$(CONFIG_S3C2412_PM_SLEEP)	+= sleep-s3c2412.o
 
-obj-$(CONFIG_CPU_S3C2416)	+= s3c2416.o clock-s3c2416.o
+obj-$(CONFIG_CPU_S3C2416)	+= s3c2416.o
 obj-$(CONFIG_S3C2416_PM)	+= pm-s3c2416.o
 
-obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o clock-s3c2440.o
+obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o
 obj-$(CONFIG_CPU_S3C2442)	+= s3c2442.o
-obj-$(CONFIG_CPU_S3C244X)	+= s3c244x.o clock-s3c244x.o
+obj-$(CONFIG_CPU_S3C244X)	+= s3c244x.o
 obj-$(CONFIG_S3C2440_DMA)	+= dma-s3c2440.o
 obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o
 obj-$(CONFIG_S3C2440_PLL_16934400) += pll-s3c2440-16934400.o
 
-obj-$(CONFIG_CPU_S3C2443)	+= s3c2443.o clock-s3c2443.o
+obj-$(CONFIG_CPU_S3C2443)	+= s3c2443.o
 
 # PM
 
@@ -44,16 +44,13 @@ obj-$(CONFIG_PM)		+= pm.o irq-pm.o sleep.o
 
 # common code
 
-obj-$(CONFIG_S3C24XX_DCLK)	+= clock-dclk.o
 obj-$(CONFIG_S3C24XX_DMA)	+= dma.o
 
-obj-$(CONFIG_S3C2410_CLOCK)	+= clock-s3c2410.o
 obj-$(CONFIG_S3C2410_CPUFREQ_UTILS) += cpufreq-utils.o
 
 obj-$(CONFIG_S3C2410_IOTIMING)	+= iotiming-s3c2410.o
 obj-$(CONFIG_S3C2412_IOTIMING)	+= iotiming-s3c2412.o
 
-obj-$(CONFIG_S3C2443_COMMON)	+= common-s3c2443.o
 obj-$(CONFIG_S3C2443_DMA)	+= dma-s3c2443.o
 
 #

arch/arm/mach-s3c24xx/clock-dclk.c

-/*
- * Copyright (c) 2004-2008 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *	http://armlinux.simtec.co.uk/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * S3C24XX - definitions for DCLK and CLKOUT registers
- */
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <mach/regs-clock.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-/* clocks that could be registered by external code */
-
-static int s3c24xx_dclk_enable(struct clk *clk, int enable)
-{
-	unsigned long dclkcon = __raw_readl(S3C24XX_DCLKCON);
-
-	if (enable)
-		dclkcon |= clk->ctrlbit;
-	else
-		dclkcon &= ~clk->ctrlbit;
-
-	__raw_writel(dclkcon, S3C24XX_DCLKCON);
-
-	return 0;
-}
-
-static int s3c24xx_dclk_setparent(struct clk *clk, struct clk *parent)
-{
-	unsigned long dclkcon;
-	unsigned int uclk;
-
-	if (parent == &clk_upll)
-		uclk = 1;
-	else if (parent == &clk_p)
-		uclk = 0;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	dclkcon = __raw_readl(S3C24XX_DCLKCON);
-
-	if (clk->ctrlbit == S3C2410_DCLKCON_DCLK0EN) {
-		if (uclk)
-			dclkcon |= S3C2410_DCLKCON_DCLK0_UCLK;
-		else
-			dclkcon &= ~S3C2410_DCLKCON_DCLK0_UCLK;
-	} else {
-		if (uclk)
-			dclkcon |= S3C2410_DCLKCON_DCLK1_UCLK;
-		else
-			dclkcon &= ~S3C2410_DCLKCON_DCLK1_UCLK;
-	}
-
-	__raw_writel(dclkcon, S3C24XX_DCLKCON);
-
-	return 0;
-}
-static unsigned long s3c24xx_calc_div(struct clk *clk, unsigned long rate)
-{
-	unsigned long div;
-
-	if ((rate == 0) || !clk->parent)
-		return 0;
-
-	div = clk_get_rate(clk->parent) / rate;
-	if (div < 2)
-		div = 2;
-	else if (div > 16)
-		div = 16;
-
-	return div;
-}
-
-static unsigned long s3c24xx_round_dclk_rate(struct clk *clk,
-	unsigned long rate)
-{
-	unsigned long div = s3c24xx_calc_div(clk, rate);
-
-	if (div == 0)
-		return 0;
-
-	return clk_get_rate(clk->parent) / div;
-}
-
-static int s3c24xx_set_dclk_rate(struct clk *clk, unsigned long rate)
-{
-	unsigned long mask, data, div = s3c24xx_calc_div(clk, rate);
-
-	if (div == 0)
-		return -EINVAL;
-
-	if (clk == &s3c24xx_dclk0) {
-		mask = S3C2410_DCLKCON_DCLK0_DIV_MASK |
-			S3C2410_DCLKCON_DCLK0_CMP_MASK;
-		data = S3C2410_DCLKCON_DCLK0_DIV(div) |
-			S3C2410_DCLKCON_DCLK0_CMP((div + 1) / 2);
-	} else if (clk == &s3c24xx_dclk1) {
-		mask = S3C2410_DCLKCON_DCLK1_DIV_MASK |
-			S3C2410_DCLKCON_DCLK1_CMP_MASK;
-		data = S3C2410_DCLKCON_DCLK1_DIV(div) |
-			S3C2410_DCLKCON_DCLK1_CMP((div + 1) / 2);
-	} else
-		return -EINVAL;
-
-	clk->rate = clk_get_rate(clk->parent) / div;
-	__raw_writel(((__raw_readl(S3C24XX_DCLKCON) & ~mask) | data),
-		S3C24XX_DCLKCON);
-	return clk->rate;
-}
-static int s3c24xx_clkout_setparent(struct clk *clk, struct clk *parent)
-{
-	unsigned long mask;
-	unsigned long source;
-
-	/* calculate the MISCCR setting for the clock */
-
-	if (parent == &clk_mpll)
-		source = S3C2410_MISCCR_CLK0_MPLL;
-	else if (parent == &clk_upll)
-		source = S3C2410_MISCCR_CLK0_UPLL;
-	else if (parent == &clk_f)
-		source = S3C2410_MISCCR_CLK0_FCLK;
-	else if (parent == &clk_h)
-		source = S3C2410_MISCCR_CLK0_HCLK;
-	else if (parent == &clk_p)
-		source = S3C2410_MISCCR_CLK0_PCLK;
-	else if (clk == &s3c24xx_clkout0 && parent == &s3c24xx_dclk0)
-		source = S3C2410_MISCCR_CLK0_DCLK0;
-	else if (clk == &s3c24xx_clkout1 && parent == &s3c24xx_dclk1)
-		source = S3C2410_MISCCR_CLK0_DCLK0;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	if (clk == &s3c24xx_clkout0)
-		mask = S3C2410_MISCCR_CLK0_MASK;
-	else {
-		source <<= 4;
-		mask = S3C2410_MISCCR_CLK1_MASK;
-	}
-
-	s3c2410_modify_misccr(mask, source);
-	return 0;
-}
-
-/* external clock definitions */
-
-static struct clk_ops dclk_ops = {
-	.set_parent	= s3c24xx_dclk_setparent,
-	.set_rate	= s3c24xx_set_dclk_rate,
-	.round_rate	= s3c24xx_round_dclk_rate,
-};
-
-struct clk s3c24xx_dclk0 = {
-	.name		= "dclk0",
-	.ctrlbit	= S3C2410_DCLKCON_DCLK0EN,
-	.enable	        = s3c24xx_dclk_enable,
-	.ops		= &dclk_ops,
-};
-
-struct clk s3c24xx_dclk1 = {
-	.name		= "dclk1",
-	.ctrlbit	= S3C2410_DCLKCON_DCLK1EN,
-	.enable		= s3c24xx_dclk_enable,
-	.ops		= &dclk_ops,
-};
-
-static struct clk_ops clkout_ops = {
-	.set_parent	= s3c24xx_clkout_setparent,
-};
-
-struct clk s3c24xx_clkout0 = {
-	.name		= "clkout0",
-	.ops		= &clkout_ops,
-};
-
-struct clk s3c24xx_clkout1 = {
-	.name		= "clkout1",
-	.ops		= &clkout_ops,
-};

arch/arm/mach-s3c24xx/clock-s3c2410.c

-/*
- * Copyright (c) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410,S3C2440,S3C2442 Clock control support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-#include <linux/delay.h>
-#include <linux/serial_core.h>
-#include <linux/serial_s3c.h>
-#include <linux/io.h>
-
-#include <asm/mach/map.h>
-
-#include <mach/hardware.h>
-#include <mach/regs-clock.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-int s3c2410_clkcon_enable(struct clk *clk, int enable)
-{
-	unsigned int clocks = clk->ctrlbit;
-	unsigned long clkcon;
-
-	clkcon = __raw_readl(S3C2410_CLKCON);
-
-	if (enable)
-		clkcon |= clocks;
-	else
-		clkcon &= ~clocks;
-
-	/* ensure none of the special function bits set */
-	clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER);
-
-	__raw_writel(clkcon, S3C2410_CLKCON);
-
-	return 0;
-}
-
-static int s3c2410_upll_enable(struct clk *clk, int enable)
-{
-	unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW);
-	unsigned long orig = clkslow;
-
-	if (enable)
-		clkslow &= ~S3C2410_CLKSLOW_UCLK_OFF;
-	else
-		clkslow |= S3C2410_CLKSLOW_UCLK_OFF;
-
-	__raw_writel(clkslow, S3C2410_CLKSLOW);
-
-	/* if we started the UPLL, then allow to settle */
-
-	if (enable && (orig & S3C2410_CLKSLOW_UCLK_OFF))
-		udelay(200);
-
-	return 0;
-}
-
-/* standard clock definitions */
-
-static struct clk init_clocks_off[] = {
-	{
-		.name		= "nand",
-		.parent		= &clk_h,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_NAND,
-	}, {
-		.name		= "sdi",
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_SDI,
-	}, {
-		.name		= "adc",
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_ADC,
-	}, {
-		.name		= "i2c",
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_IIC,
-	}, {
-		.name		= "iis",
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_IIS,
-	}, {
-		.name		= "spi",
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_SPI,
-	}
-};
-
-static struct clk clk_lcd = {
-	.name		= "lcd",
-	.parent		= &clk_h,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_LCDC,
-};
-
-static struct clk clk_gpio = {
-	.name		= "gpio",
-	.parent		= &clk_p,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_GPIO,
-};
-
-static struct clk clk_usb_host = {
-	.name		= "usb-host",
-	.parent		= &clk_h,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_USBH,
-};
-
-static struct clk clk_usb_device = {
-	.name		= "usb-device",
-	.parent		= &clk_h,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_USBD,
-};
-
-static struct clk clk_timers = {
-	.name		= "timers",
-	.parent		= &clk_p,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_PWMT,
-};
-
-struct clk s3c24xx_clk_uart0 = {
-	.name		= "uart",
-	.devname	= "s3c2410-uart.0",
-	.parent		= &clk_p,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_UART0,
-};
-
-struct clk s3c24xx_clk_uart1 = {
-	.name		= "uart",
-	.devname	= "s3c2410-uart.1",
-	.parent		= &clk_p,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_UART1,
-};
-
-struct clk s3c24xx_clk_uart2 = {
-	.name		= "uart",
-	.devname	= "s3c2410-uart.2",
-	.parent		= &clk_p,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_UART2,
-};
-
-static struct clk clk_rtc = {
-	.name		= "rtc",
-	.parent		= &clk_p,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2410_CLKCON_RTC,
-};
-
-static struct clk clk_watchdog = {
-	.name		= "watchdog",
-	.parent		= &clk_p,
-	.ctrlbit	= 0,
-};
-
-static struct clk clk_usb_bus_host = {
-	.name		= "usb-bus-host",
-	.parent		= &clk_usb_bus,
-};
-
-static struct clk clk_usb_bus_gadget = {
-	.name		= "usb-bus-gadget",
-	.parent		= &clk_usb_bus,
-};
-
-static struct clk *init_clocks[] = {
-	&clk_lcd,
-	&clk_gpio,
-	&clk_usb_host,
-	&clk_usb_device,
-	&clk_timers,
-	&s3c24xx_clk_uart0,
-	&s3c24xx_clk_uart1,
-	&s3c24xx_clk_uart2,
-	&clk_rtc,
-	&clk_watchdog,
-	&clk_usb_bus_host,
-	&clk_usb_bus_gadget,
-};
-
-/* s3c2410_baseclk_add()
- *
- * Add all the clocks used by the s3c2410 or compatible CPUs
- * such as the S3C2440 and S3C2442.
- *
- * We cannot use a system device as we are needed before any
- * of the init-calls that initialise the devices are actually
- * done.
-*/
-
-int __init s3c2410_baseclk_add(void)
-{
-	unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW);
-	unsigned long clkcon  = __raw_readl(S3C2410_CLKCON);
-	struct clk *xtal;
-	int ret;
-	int ptr;
-
-	clk_upll.enable = s3c2410_upll_enable;
-
-	if (s3c24xx_register_clock(&clk_usb_bus) < 0)
-		printk(KERN_ERR "failed to register usb bus clock\n");
-
-	/* register clocks from clock array */
-
-	for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++) {
-		struct clk *clkp = init_clocks[ptr];
-
-		/* ensure that we note the clock state */
-
-		clkp->usage = clkcon & clkp->ctrlbit ? 1 : 0;
-
-		ret = s3c24xx_register_clock(clkp);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       clkp->name, ret);
-		}
-	}
-
-	/* We must be careful disabling the clocks we are not intending to
-	 * be using at boot time, as subsystems such as the LCD which do
-	 * their own DMA requests to the bus can cause the system to lockup
-	 * if they where in the middle of requesting bus access.
-	 *
-	 * Disabling the LCD clock if the LCD is active is very dangerous,
-	 * and therefore the bootloader should be careful to not enable
-	 * the LCD clock if it is not needed.
-	*/
-
-	/* install (and disable) the clocks we do not need immediately */
-
-	s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
-	s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
-
-	/* show the clock-slow value */
-
-	xtal = clk_get(NULL, "xtal");
-
-	printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n",
-	       print_mhz(clk_get_rate(xtal) /
-			 ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))),
-	       (clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast",
-	       (clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on",
-	       (clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on");
-
-	return 0;
-}

arch/arm/mach-s3c24xx/clock-s3c2412.c

-/* linux/arch/arm/mach-s3c2412/clock.c
- *
- * Copyright (c) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2412,S3C2413 Clock control support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-#include <linux/delay.h>
-#include <linux/serial_core.h>
-#include <linux/serial_s3c.h>
-#include <linux/io.h>
-
-#include <asm/mach/map.h>
-
-#include <mach/hardware.h>
-#include <mach/regs-clock.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-/* We currently have to assume that the system is running
- * from the XTPll input, and that all ***REFCLKs are being
- * fed from it, as we cannot read the state of OM[4] from
- * software.
- *
- * It would be possible for each board initialisation to
- * set the correct muxing at initialisation
-*/
-
-static int s3c2412_clkcon_enable(struct clk *clk, int enable)
-{
-	unsigned int clocks = clk->ctrlbit;
-	unsigned long clkcon;
-
-	clkcon = __raw_readl(S3C2410_CLKCON);
-
-	if (enable)
-		clkcon |= clocks;
-	else
-		clkcon &= ~clocks;
-
-	__raw_writel(clkcon, S3C2410_CLKCON);
-
-	return 0;
-}
-
-static int s3c2412_upll_enable(struct clk *clk, int enable)
-{
-	unsigned long upllcon = __raw_readl(S3C2410_UPLLCON);
-	unsigned long orig = upllcon;
-
-	if (!enable)
-		upllcon |= S3C2412_PLLCON_OFF;
-	else
-		upllcon &= ~S3C2412_PLLCON_OFF;
-
-	__raw_writel(upllcon, S3C2410_UPLLCON);
-
-	/* allow ~150uS for the PLL to settle and lock */
-
-	if (enable && (orig & S3C2412_PLLCON_OFF))
-		udelay(150);
-
-	return 0;
-}
-
-/* clock selections */
-
-static struct clk clk_erefclk = {
-	.name		= "erefclk",
-};
-
-static struct clk clk_urefclk = {
-	.name		= "urefclk",
-};
-
-static int s3c2412_setparent_usysclk(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-
-	if (parent == &clk_urefclk)
-		clksrc &= ~S3C2412_CLKSRC_USYSCLK_UPLL;
-	else if (parent == &clk_upll)
-		clksrc |= S3C2412_CLKSRC_USYSCLK_UPLL;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	__raw_writel(clksrc, S3C2412_CLKSRC);
-	return 0;
-}
-
-static struct clk clk_usysclk = {
-	.name		= "usysclk",
-	.parent		= &clk_xtal,
-	.ops		= &(struct clk_ops) {
-		.set_parent	= s3c2412_setparent_usysclk,
-	},
-};
-
-static struct clk clk_mrefclk = {
-	.name		= "mrefclk",
-	.parent		= &clk_xtal,
-};
-
-static struct clk clk_mdivclk = {
-	.name		= "mdivclk",
-	.parent		= &clk_xtal,
-};
-
-static int s3c2412_setparent_usbsrc(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-
-	if (parent == &clk_usysclk)
-		clksrc &= ~S3C2412_CLKSRC_USBCLK_HCLK;
-	else if (parent == &clk_h)
-		clksrc |= S3C2412_CLKSRC_USBCLK_HCLK;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	__raw_writel(clksrc, S3C2412_CLKSRC);
-	return 0;
-}
-
-static unsigned long s3c2412_roundrate_usbsrc(struct clk *clk,
-					      unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	int div;
-
-	if (rate > parent_rate)
-		return parent_rate;
-
-	div = parent_rate / rate;
-	if (div > 2)
-		div = 2;
-
-	return parent_rate / div;
-}
-
-static unsigned long s3c2412_getrate_usbsrc(struct clk *clk)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long div = __raw_readl(S3C2410_CLKDIVN);
-
-	return parent_rate / ((div & S3C2412_CLKDIVN_USB48DIV) ? 2 : 1);
-}
-
-static int s3c2412_setrate_usbsrc(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN);
-
-	rate = s3c2412_roundrate_usbsrc(clk, rate);
-
-	if ((parent_rate / rate) == 2)
-		clkdivn |= S3C2412_CLKDIVN_USB48DIV;
-	else
-		clkdivn &= ~S3C2412_CLKDIVN_USB48DIV;
-
-	__raw_writel(clkdivn, S3C2410_CLKDIVN);
-	return 0;
-}
-
-static struct clk clk_usbsrc = {
-	.name		= "usbsrc",
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2412_getrate_usbsrc,
-		.set_rate	= s3c2412_setrate_usbsrc,
-		.round_rate	= s3c2412_roundrate_usbsrc,
-		.set_parent	= s3c2412_setparent_usbsrc,
-	},
-};
-
-static int s3c2412_setparent_msysclk(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-
-	if (parent == &clk_mdivclk)
-		clksrc &= ~S3C2412_CLKSRC_MSYSCLK_MPLL;
-	else if (parent == &clk_mpll)
-		clksrc |= S3C2412_CLKSRC_MSYSCLK_MPLL;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	__raw_writel(clksrc, S3C2412_CLKSRC);
-	return 0;
-}
-
-static struct clk clk_msysclk = {
-	.name		= "msysclk",
-	.ops		= &(struct clk_ops) {
-		.set_parent	= s3c2412_setparent_msysclk,
-	},
-};
-
-static int s3c2412_setparent_armclk(struct clk *clk, struct clk *parent)
-{
-	unsigned long flags;
-	unsigned long clkdiv;
-	unsigned long dvs;
-
-	/* Note, we current equate fclk andf msysclk for S3C2412 */
-
-	if (parent == &clk_msysclk || parent == &clk_f)
-		dvs = 0;
-	else if (parent == &clk_h)
-		dvs = S3C2412_CLKDIVN_DVSEN;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	/* update this under irq lockdown, clkdivn is not protected
-	 * by the clock system. */
-
-	local_irq_save(flags);
-
-	clkdiv  = __raw_readl(S3C2410_CLKDIVN);
-	clkdiv &= ~S3C2412_CLKDIVN_DVSEN;
-	clkdiv |= dvs;
-	__raw_writel(clkdiv, S3C2410_CLKDIVN);
-
-	local_irq_restore(flags);
-
-	return 0;
-}
-
-static struct clk clk_armclk = {
-	.name		= "armclk",
-	.parent		= &clk_msysclk,
-	.ops		= &(struct clk_ops) {
-		.set_parent	= s3c2412_setparent_armclk,
-	},
-};
-
-/* these next clocks have an divider immediately after them,
- * so we can register them with their divider and leave out the
- * intermediate clock stage
-*/
-static unsigned long s3c2412_roundrate_clksrc(struct clk *clk,
-					      unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	int div;
-
-	if (rate > parent_rate)
-		return parent_rate;
-
-	/* note, we remove the +/- 1 calculations as they cancel out */
-
-	div = (rate / parent_rate);
-
-	if (div < 1)
-		div = 1;
-	else if (div > 16)
-		div = 16;
-
-	return parent_rate / div;
-}
-
-static int s3c2412_setparent_uart(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-
-	if (parent == &clk_erefclk)
-		clksrc &= ~S3C2412_CLKSRC_UARTCLK_MPLL;
-	else if (parent == &clk_mpll)
-		clksrc |= S3C2412_CLKSRC_UARTCLK_MPLL;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	__raw_writel(clksrc, S3C2412_CLKSRC);
-	return 0;
-}
-
-static unsigned long s3c2412_getrate_uart(struct clk *clk)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long div = __raw_readl(S3C2410_CLKDIVN);
-
-	div &= S3C2412_CLKDIVN_UARTDIV_MASK;
-	div >>= S3C2412_CLKDIVN_UARTDIV_SHIFT;
-
-	return parent_rate / (div + 1);
-}
-
-static int s3c2412_setrate_uart(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN);
-
-	rate = s3c2412_roundrate_clksrc(clk, rate);
-
-	clkdivn &= ~S3C2412_CLKDIVN_UARTDIV_MASK;
-	clkdivn |= ((parent_rate / rate) - 1) << S3C2412_CLKDIVN_UARTDIV_SHIFT;
-
-	__raw_writel(clkdivn, S3C2410_CLKDIVN);
-	return 0;
-}
-
-static struct clk clk_uart = {
-	.name		= "uartclk",
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2412_getrate_uart,
-		.set_rate	= s3c2412_setrate_uart,
-		.set_parent	= s3c2412_setparent_uart,
-		.round_rate	= s3c2412_roundrate_clksrc,
-	},
-};
-
-static int s3c2412_setparent_i2s(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-
-	if (parent == &clk_erefclk)
-		clksrc &= ~S3C2412_CLKSRC_I2SCLK_MPLL;
-	else if (parent == &clk_mpll)
-		clksrc |= S3C2412_CLKSRC_I2SCLK_MPLL;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	__raw_writel(clksrc, S3C2412_CLKSRC);
-	return 0;
-}
-
-static unsigned long s3c2412_getrate_i2s(struct clk *clk)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long div = __raw_readl(S3C2410_CLKDIVN);
-
-	div &= S3C2412_CLKDIVN_I2SDIV_MASK;
-	div >>= S3C2412_CLKDIVN_I2SDIV_SHIFT;
-
-	return parent_rate / (div + 1);
-}
-
-static int s3c2412_setrate_i2s(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN);
-
-	rate = s3c2412_roundrate_clksrc(clk, rate);
-
-	clkdivn &= ~S3C2412_CLKDIVN_I2SDIV_MASK;
-	clkdivn |= ((parent_rate / rate) - 1) << S3C2412_CLKDIVN_I2SDIV_SHIFT;
-
-	__raw_writel(clkdivn, S3C2410_CLKDIVN);
-	return 0;
-}
-
-static struct clk clk_i2s = {
-	.name		= "i2sclk",
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2412_getrate_i2s,
-		.set_rate	= s3c2412_setrate_i2s,
-		.set_parent	= s3c2412_setparent_i2s,
-		.round_rate	= s3c2412_roundrate_clksrc,
-	},
-};
-
-static int s3c2412_setparent_cam(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-
-	if (parent == &clk_usysclk)
-		clksrc &= ~S3C2412_CLKSRC_CAMCLK_HCLK;
-	else if (parent == &clk_h)
-		clksrc |= S3C2412_CLKSRC_CAMCLK_HCLK;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	__raw_writel(clksrc, S3C2412_CLKSRC);
-	return 0;
-}
-static unsigned long s3c2412_getrate_cam(struct clk *clk)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long div = __raw_readl(S3C2410_CLKDIVN);
-
-	div &= S3C2412_CLKDIVN_CAMDIV_MASK;
-	div >>= S3C2412_CLKDIVN_CAMDIV_SHIFT;
-
-	return parent_rate / (div + 1);
-}
-
-static int s3c2412_setrate_cam(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long clkdivn = __raw_readl(S3C2410_CLKDIVN);
-
-	rate = s3c2412_roundrate_clksrc(clk, rate);
-
-	clkdivn &= ~S3C2412_CLKDIVN_CAMDIV_MASK;
-	clkdivn |= ((parent_rate / rate) - 1) << S3C2412_CLKDIVN_CAMDIV_SHIFT;
-
-	__raw_writel(clkdivn, S3C2410_CLKDIVN);
-	return 0;
-}
-
-static struct clk clk_cam = {
-	.name		= "camif-upll",	/* same as 2440 name */
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2412_getrate_cam,
-		.set_rate	= s3c2412_setrate_cam,
-		.set_parent	= s3c2412_setparent_cam,
-		.round_rate	= s3c2412_roundrate_clksrc,
-	},
-};
-
-/* standard clock definitions */
-
-static struct clk init_clocks_disable[] = {
-	{
-		.name		= "nand",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_NAND,
-	}, {
-		.name		= "sdi",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_SDI,
-	}, {
-		.name		= "adc",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_ADC,
-	}, {
-		.name		= "i2c",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_IIC,
-	}, {
-		.name		= "iis",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_IIS,
-	}, {
-		.name		= "spi",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_SPI,
-	}
-};
-
-static struct clk init_clocks[] = {
-	{
-		.name		= "dma.0",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_DMA0,
-	}, {
-		.name		= "dma.1",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_DMA1,
-	}, {
-		.name		= "dma.2",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_DMA2,
-	}, {
-		.name		= "dma.3",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_DMA3,
-	}, {
-		.name		= "lcd",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_LCDC,
-	}, {
-		.name		= "gpio",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_GPIO,
-	}, {
-		.name		= "usb-host",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_USBH,
-	}, {
-		.name		= "usb-device",
-		.parent		= &clk_h,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_USBD,
-	}, {
-		.name		= "timers",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_PWMT,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2412-uart.0",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_UART0,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2412-uart.1",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_UART1,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2412-uart.2",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_UART2,
-	}, {
-		.name		= "rtc",
-		.parent		= &clk_p,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_RTC,
-	}, {
-		.name		= "watchdog",
-		.parent		= &clk_p,
-		.ctrlbit	= 0,
-	}, {
-		.name		= "usb-bus-gadget",
-		.parent		= &clk_usb_bus,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_USB_DEV48,
-	}, {
-		.name		= "usb-bus-host",
-		.parent		= &clk_usb_bus,
-		.enable		= s3c2412_clkcon_enable,
-		.ctrlbit	= S3C2412_CLKCON_USB_HOST48,
-	}
-};
-
-/* clocks to add where we need to check their parentage */
-
-struct clk_init {
-	struct clk	*clk;
-	unsigned int	 bit;
-	struct clk	*src_0;
-	struct clk	*src_1;
-};
-
-static struct clk_init clks_src[] __initdata = {
-	{
-		.clk	= &clk_usysclk,
-		.bit	= S3C2412_CLKSRC_USBCLK_HCLK,
-		.src_0	= &clk_urefclk,
-		.src_1	= &clk_upll,
-	}, {
-		.clk	= &clk_i2s,
-		.bit	= S3C2412_CLKSRC_I2SCLK_MPLL,
-		.src_0	= &clk_erefclk,
-		.src_1	= &clk_mpll,
-	}, {
-		.clk	= &clk_cam,
-		.bit	= S3C2412_CLKSRC_CAMCLK_HCLK,
-		.src_0	= &clk_usysclk,
-		.src_1	= &clk_h,
-	}, {
-		.clk	= &clk_msysclk,
-		.bit	= S3C2412_CLKSRC_MSYSCLK_MPLL,
-		.src_0	= &clk_mdivclk,
-		.src_1	= &clk_mpll,
-	}, {
-		.clk	= &clk_uart,
-		.bit	= S3C2412_CLKSRC_UARTCLK_MPLL,
-		.src_0	= &clk_erefclk,
-		.src_1	= &clk_mpll,
-	}, {
-		.clk	= &clk_usbsrc,
-		.bit	= S3C2412_CLKSRC_USBCLK_HCLK,
-		.src_0	= &clk_usysclk,
-		.src_1	= &clk_h,
-	/* here we assume  OM[4] select xtal */
-	}, {
-		.clk	= &clk_erefclk,
-		.bit	= S3C2412_CLKSRC_EREFCLK_EXTCLK,
-		.src_0	= &clk_xtal,
-		.src_1	= &clk_ext,
-	}, {
-		.clk	= &clk_urefclk,
-		.bit	= S3C2412_CLKSRC_UREFCLK_EXTCLK,
-		.src_0	= &clk_xtal,
-		.src_1	= &clk_ext,
-	},
-};
-
-/* s3c2412_clk_initparents
- *
- * Initialise the parents for the clocks that we get at start-time
-*/
-
-static void __init s3c2412_clk_initparents(void)
-{
-	unsigned long clksrc = __raw_readl(S3C2412_CLKSRC);
-	struct clk_init *cip = clks_src;
-	struct clk *src;
-	int ptr;
-	int ret;
-
-	for (ptr = 0; ptr < ARRAY_SIZE(clks_src); ptr++, cip++) {
-		ret = s3c24xx_register_clock(cip->clk);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       cip->clk->name, ret);
-		}
-
-		src = (clksrc & cip->bit) ? cip->src_1 : cip->src_0;
-
-		printk(KERN_INFO "%s: parent %s\n", cip->clk->name, src->name);
-		clk_set_parent(cip->clk, src);
-	}
-}
-
-/* clocks to add straight away */
-
-static struct clk *clks[] __initdata = {
-	&clk_ext,
-	&clk_usb_bus,
-	&clk_mrefclk,
-	&clk_armclk,
-};
-
-static struct clk_lookup s3c2412_clk_lookup[] = {
-	CLKDEV_INIT(NULL, "clk_uart_baud1", &s3c24xx_uclk),
-	CLKDEV_INIT(NULL, "clk_uart_baud2", &clk_p),
-	CLKDEV_INIT(NULL, "clk_uart_baud3", &clk_usysclk),
-};
-
-int __init s3c2412_baseclk_add(void)
-{
-	unsigned long clkcon  = __raw_readl(S3C2410_CLKCON);
-	unsigned int dvs;
-	struct clk *clkp;
-	int ret;
-	int ptr;
-
-	clk_upll.enable = s3c2412_upll_enable;
-	clk_usb_bus.parent = &clk_usbsrc;
-	clk_usb_bus.rate = 0x0;
-
-	clk_f.parent = &clk_msysclk;
-
-	s3c2412_clk_initparents();
-
-	for (ptr = 0; ptr < ARRAY_SIZE(clks); ptr++) {
-		clkp = clks[ptr];
-
-		ret = s3c24xx_register_clock(clkp);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       clkp->name, ret);
-		}
-	}
-
-	/* set the dvs state according to what we got at boot time */
-
-	dvs = __raw_readl(S3C2410_CLKDIVN) & S3C2412_CLKDIVN_DVSEN;
-
-	if (dvs)
-		clk_armclk.parent = &clk_h;
-
-	printk(KERN_INFO "S3C2412: DVS is %s\n", dvs ? "on" : "off");
-
-	/* ensure usb bus clock is within correct rate of 48MHz */
-
-	if (clk_get_rate(&clk_usb_bus) != (48 * 1000 * 1000)) {
-		printk(KERN_INFO "Warning: USB bus clock not at 48MHz\n");
-
-		/* for the moment, let's use the UPLL, and see if we can
-		 * get 48MHz */
-
-		clk_set_parent(&clk_usysclk, &clk_upll);
-		clk_set_parent(&clk_usbsrc, &clk_usysclk);
-		clk_set_rate(&clk_usbsrc, 48*1000*1000);
-	}
-
-	printk("S3C2412: upll %s, %ld.%03ld MHz, usb-bus %ld.%03ld MHz\n",
-	       (__raw_readl(S3C2410_UPLLCON) & S3C2412_PLLCON_OFF) ? "off":"on",
-	       print_mhz(clk_get_rate(&clk_upll)),
-	       print_mhz(clk_get_rate(&clk_usb_bus)));
-
-	/* register clocks from clock array */
-
-	clkp = init_clocks;
-	for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) {
-		/* ensure that we note the clock state */
-
-		clkp->usage = clkcon & clkp->ctrlbit ? 1 : 0;
-
-		ret = s3c24xx_register_clock(clkp);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       clkp->name, ret);
-		}
-	}
-
-	/* We must be careful disabling the clocks we are not intending to
-	 * be using at boot time, as subsystems such as the LCD which do
-	 * their own DMA requests to the bus can cause the system to lockup
-	 * if they where in the middle of requesting bus access.
-	 *
-	 * Disabling the LCD clock if the LCD is active is very dangerous,
-	 * and therefore the bootloader should be careful to not enable
-	 * the LCD clock if it is not needed.
-	*/
-
-	/* install (and disable) the clocks we do not need immediately */
-
-	clkp = init_clocks_disable;
-	for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
-
-		ret = s3c24xx_register_clock(clkp);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       clkp->name, ret);
-		}
-
-		s3c2412_clkcon_enable(clkp, 0);
-	}
-
-	clkdev_add_table(s3c2412_clk_lookup, ARRAY_SIZE(s3c2412_clk_lookup));
-	return 0;
-}

arch/arm/mach-s3c24xx/clock-s3c2416.c

-/* linux/arch/arm/mach-s3c2416/clock.c
- *
- * Copyright (c) 2010 Simtec Electronics
- * Copyright (c) 2010 Ben Dooks <ben-linux@fluff.org>
- *
- * S3C2416 Clock control support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/clk.h>
-
-#include <plat/clock.h>
-#include <plat/clock-clksrc.h>
-#include <plat/cpu.h>
-
-#include <plat/cpu-freq.h>
-#include <plat/pll.h>
-
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-#include <mach/regs-s3c2443-clock.h>
-
-/* armdiv
- *
- * this clock is sourced from msysclk and can have a number of
- * divider values applied to it to then be fed into armclk.
- * The real clock definition is done in s3c2443-clock.c,
- * only the armdiv divisor table must be defined here.
-*/
-
-static unsigned int armdiv[8] = {
-	[0] = 1,
-	[1] = 2,
-	[2] = 3,
-	[3] = 4,
-	[5] = 6,
-	[7] = 8,
-};
-
-static struct clksrc_clk hsspi_eplldiv = {
-	.clk = {
-		.name	= "hsspi-eplldiv",
-		.parent	= &clk_esysclk.clk,
-		.ctrlbit = (1 << 14),
-		.enable = s3c2443_clkcon_enable_s,
-	},
-	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 24 },
-};
-
-static struct clk *hsspi_sources[] = {
-	[0] = &hsspi_eplldiv.clk,
-	[1] = NULL, /* to fix */
-};
-
-static struct clksrc_clk hsspi_mux = {
-	.clk	= {
-		.name	= "hsspi-if",
-	},
-	.sources = &(struct clksrc_sources) {
-		.sources = hsspi_sources,
-		.nr_sources = ARRAY_SIZE(hsspi_sources),
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 18 },
-};
-
-static struct clksrc_clk hsmmc_div[] = {
-	[0] = {
-		.clk = {
-			.name	= "hsmmc-div",
-			.devname	= "s3c-sdhci.0",
-			.parent	= &clk_esysclk.clk,
-		},
-		.reg_div = { .reg = S3C2416_CLKDIV2, .size = 2, .shift = 6 },
-	},
-	[1] = {
-		.clk = {
-			.name	= "hsmmc-div",
-			.devname	= "s3c-sdhci.1",
-			.parent	= &clk_esysclk.clk,
-		},
-		.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 6 },
-	},
-};
-
-static struct clksrc_clk hsmmc_mux0 = {
-	.clk	= {
-		.name		= "hsmmc-if",
-		.devname	= "s3c-sdhci.0",
-		.ctrlbit	= (1 << 6),
-		.enable		= s3c2443_clkcon_enable_s,
-	},
-	.sources	= &(struct clksrc_sources) {
-		.nr_sources	= 2,
-		.sources	= (struct clk * []) {
-			[0]	= &hsmmc_div[0].clk,
-			[1]	= NULL, /* to fix */
-		},
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 16 },
-};
-
-static struct clksrc_clk hsmmc_mux1 = {
-	.clk	= {
-		.name		= "hsmmc-if",
-		.devname	= "s3c-sdhci.1",
-		.ctrlbit	= (1 << 12),
-		.enable		= s3c2443_clkcon_enable_s,
-	},
-	.sources	= &(struct clksrc_sources) {
-		.nr_sources	= 2,
-		.sources	= (struct clk * []) {
-			[0]	= &hsmmc_div[1].clk,
-			[1]	= NULL, /* to fix */
-		},
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 17 },
-};
-
-static struct clk hsmmc0_clk = {
-	.name		= "hsmmc",
-	.devname	= "s3c-sdhci.0",
-	.parent		= &clk_h,
-	.enable		= s3c2443_clkcon_enable_h,
-	.ctrlbit	= S3C2416_HCLKCON_HSMMC0,
-};
-
-static struct clksrc_clk *clksrcs[] __initdata = {
-	&hsspi_eplldiv,
-	&hsspi_mux,
-	&hsmmc_div[0],
-	&hsmmc_div[1],
-	&hsmmc_mux0,
-	&hsmmc_mux1,
-};
-
-static struct clk_lookup s3c2416_clk_lookup[] = {
-	CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.0", &hsmmc0_clk),
-	CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &hsmmc_mux0.clk),
-	CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &hsmmc_mux1.clk),
-	/* s3c2443-spi.0 is used on s3c2416 and s3c2450 as well */
-	CLKDEV_INIT("s3c2443-spi.0", "spi_busclk2", &hsspi_mux.clk),
-};
-
-void __init s3c2416_init_clocks(int xtal)
-{
-	u32 epllcon = __raw_readl(S3C2443_EPLLCON);
-	u32 epllcon1 = __raw_readl(S3C2443_EPLLCON+4);
-	int ptr;
-
-	/* s3c2416 EPLL compatible with s3c64xx */
-	clk_epll.rate = s3c_get_pll6553x(xtal, epllcon, epllcon1);
-
-	clk_epll.parent = &clk_epllref.clk;
-
-	s3c2443_common_init_clocks(xtal, s3c2416_get_pll,
-				   armdiv, ARRAY_SIZE(armdiv),
-				   S3C2416_CLKDIV0_ARMDIV_MASK);
-
-	for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
-		s3c_register_clksrc(clksrcs[ptr], 1);
-
-	s3c24xx_register_clock(&hsmmc0_clk);
-	clkdev_add_table(s3c2416_clk_lookup, ARRAY_SIZE(s3c2416_clk_lookup));
-
-}

arch/arm/mach-s3c24xx/clock-s3c2440.c

-/* linux/arch/arm/mach-s3c2440/clock.c
- *
- * Copyright (c) 2004-2005 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2440 Clock support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/serial_core.h>
-#include <linux/serial_s3c.h>
-
-#include <mach/hardware.h>
-#include <linux/atomic.h>
-#include <asm/irq.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-/* S3C2440 extended clock support */
-
-static unsigned long s3c2440_camif_upll_round(struct clk *clk,
-					      unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	int div;
-
-	if (rate > parent_rate)
-		return parent_rate;
-
-	/* note, we remove the +/- 1 calculations for the divisor */
-
-	div = (parent_rate / rate) / 2;
-
-	if (div < 1)
-		div = 1;
-	else if (div > 16)
-		div = 16;
-
-	return parent_rate / (div * 2);
-}
-
-static int s3c2440_camif_upll_setrate(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long camdivn =  __raw_readl(S3C2440_CAMDIVN);
-
-	rate = s3c2440_camif_upll_round(clk, rate);
-
-	camdivn &= ~(S3C2440_CAMDIVN_CAMCLK_SEL | S3C2440_CAMDIVN_CAMCLK_MASK);
-
-	if (rate != parent_rate) {
-		camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
-		camdivn |= (((parent_rate / rate) / 2) - 1);
-	}
-
-	__raw_writel(camdivn, S3C2440_CAMDIVN);
-
-	return 0;
-}
-
-static unsigned long s3c2440_camif_upll_getrate(struct clk *clk)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long camdivn =  __raw_readl(S3C2440_CAMDIVN);
-
-	if (!(camdivn & S3C2440_CAMDIVN_CAMCLK_SEL))
-		return parent_rate;
-
-	camdivn &= S3C2440_CAMDIVN_CAMCLK_MASK;
-
-	return parent_rate / (camdivn + 1) / 2;
-}
-
-/* Extra S3C2440 clocks */
-
-static struct clk s3c2440_clk_cam = {
-	.name		= "camif",
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2440_CLKCON_CAMERA,
-};
-
-static struct clk s3c2440_clk_cam_upll = {
-	.name		= "camif-upll",
-	.ops		= &(struct clk_ops) {
-		.set_rate	= s3c2440_camif_upll_setrate,
-		.get_rate	= s3c2440_camif_upll_getrate,
-		.round_rate	= s3c2440_camif_upll_round,
-	},
-};
-
-static struct clk s3c2440_clk_ac97 = {
-	.name		= "ac97",
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2440_CLKCON_AC97,
-};
-
-#define S3C24XX_VA_UART0      (S3C_VA_UART)
-#define S3C24XX_VA_UART1      (S3C_VA_UART + 0x4000 )
-#define S3C24XX_VA_UART2      (S3C_VA_UART + 0x8000 )
-#define S3C24XX_VA_UART3      (S3C_VA_UART + 0xC000 )
-
-static unsigned long  s3c2440_fclk_n_getrate(struct clk *clk)
-{
-	unsigned long ucon0, ucon1, ucon2, divisor;
-
-	/* the fun of calculating the uart divisors on the s3c2440 */
-	ucon0 = __raw_readl(S3C24XX_VA_UART0 + S3C2410_UCON);
-	ucon1 = __raw_readl(S3C24XX_VA_UART1 + S3C2410_UCON);
-	ucon2 = __raw_readl(S3C24XX_VA_UART2 + S3C2410_UCON);
-
-	ucon0 &= S3C2440_UCON0_DIVMASK;
-	ucon1 &= S3C2440_UCON1_DIVMASK;
-	ucon2 &= S3C2440_UCON2_DIVMASK;
-
-	if (ucon0 != 0)
-		divisor = (ucon0 >> S3C2440_UCON_DIVSHIFT) + 6;
-	else if (ucon1 != 0)
-		divisor = (ucon1 >> S3C2440_UCON_DIVSHIFT) + 21;
-	else if (ucon2 != 0)
-		divisor = (ucon2 >> S3C2440_UCON_DIVSHIFT) + 36;
-	else
-		/* manual calims 44, seems to be 9 */
-		divisor = 9;
-
-	return clk_get_rate(clk->parent) / divisor;
-}
-
-static struct clk s3c2440_clk_fclk_n = {
-	.name		= "fclk_n",
-	.parent		= &clk_f,
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2440_fclk_n_getrate,
-	},
-};
-
-static struct clk_lookup s3c2440_clk_lookup[] = {
-	CLKDEV_INIT(NULL, "clk_uart_baud1", &s3c24xx_uclk),
-	CLKDEV_INIT(NULL, "clk_uart_baud2", &clk_p),
-	CLKDEV_INIT(NULL, "clk_uart_baud3", &s3c2440_clk_fclk_n),
-	CLKDEV_INIT("s3c2440-uart.0", "uart", &s3c24xx_clk_uart0),
-	CLKDEV_INIT("s3c2440-uart.1", "uart", &s3c24xx_clk_uart1),
-	CLKDEV_INIT("s3c2440-uart.2", "uart", &s3c24xx_clk_uart2),
-	CLKDEV_INIT("s3c2440-camif", "camera", &s3c2440_clk_cam_upll),
-};
-
-static int __init_refok s3c2440_clk_add(struct device *dev, struct subsys_interface *sif)
-{
-	struct clk *clock_upll;
-	struct clk *clock_h;
-	struct clk *clock_p;
-
-	clock_p = clk_get(NULL, "pclk");
-	clock_h = clk_get(NULL, "hclk");
-	clock_upll = clk_get(NULL, "upll");
-
-	if (IS_ERR(clock_p) || IS_ERR(clock_h) || IS_ERR(clock_upll)) {
-		printk(KERN_ERR "S3C2440: Failed to get parent clocks\n");
-		return -EINVAL;
-	}
-
-	s3c2440_clk_cam.parent = clock_h;
-	s3c2440_clk_ac97.parent = clock_p;
-	s3c2440_clk_cam_upll.parent = clock_upll;
-	s3c24xx_register_clock(&s3c2440_clk_fclk_n);
-
-	s3c24xx_register_clock(&s3c2440_clk_ac97);
-	s3c24xx_register_clock(&s3c2440_clk_cam);
-	s3c24xx_register_clock(&s3c2440_clk_cam_upll);
-	clkdev_add_table(s3c2440_clk_lookup, ARRAY_SIZE(s3c2440_clk_lookup));
-
-	clk_disable(&s3c2440_clk_ac97);
-	clk_disable(&s3c2440_clk_cam);
-
-	return 0;
-}
-
-static struct subsys_interface s3c2440_clk_interface = {
-	.name		= "s3c2440_clk",
-	.subsys		= &s3c2440_subsys,
-	.add_dev	= s3c2440_clk_add,
-};
-
-static __init int s3c24xx_clk_init(void)
-{
-	return subsys_interface_register(&s3c2440_clk_interface);
-}
-
-arch_initcall(s3c24xx_clk_init);

arch/arm/mach-s3c24xx/clock-s3c2443.c

-/* linux/arch/arm/mach-s3c2443/clock.c
- *
- * Copyright (c) 2007, 2010 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2443 Clock control support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/init.h>
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-#include <linux/serial_core.h>
-#include <linux/io.h>
-
-#include <asm/mach/map.h>
-
-#include <mach/hardware.h>
-
-#include <mach/regs-s3c2443-clock.h>
-
-#include <plat/cpu-freq.h>
-
-#include <plat/clock.h>
-#include <plat/clock-clksrc.h>
-#include <plat/cpu.h>
-
-/* We currently have to assume that the system is running
- * from the XTPll input, and that all ***REFCLKs are being
- * fed from it, as we cannot read the state of OM[4] from
- * software.
- *
- * It would be possible for each board initialisation to
- * set the correct muxing at initialisation
-*/
-
-/* clock selections */
-
-/* armdiv
- *
- * this clock is sourced from msysclk and can have a number of
- * divider values applied to it to then be fed into armclk.
- * The real clock definition is done in s3c2443-clock.c,
- * only the armdiv divisor table must be defined here.
-*/
-
-static unsigned int armdiv[16] = {
-	[S3C2443_CLKDIV0_ARMDIV_1 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 1,
-	[S3C2443_CLKDIV0_ARMDIV_2 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 2,
-	[S3C2443_CLKDIV0_ARMDIV_3 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 3,
-	[S3C2443_CLKDIV0_ARMDIV_4 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 4,
-	[S3C2443_CLKDIV0_ARMDIV_6 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 6,
-	[S3C2443_CLKDIV0_ARMDIV_8 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 8,
-	[S3C2443_CLKDIV0_ARMDIV_12 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 12,
-	[S3C2443_CLKDIV0_ARMDIV_16 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]	= 16,
-};
-
-/* hsspi
- *
- * high-speed spi clock, sourced from esysclk
-*/
-
-static struct clksrc_clk clk_hsspi = {
-	.clk	= {
-		.name		= "hsspi-if",
-		.parent		= &clk_esysclk.clk,
-		.ctrlbit	= S3C2443_SCLKCON_HSSPICLK,
-		.enable		= s3c2443_clkcon_enable_s,
-	},
-	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 4 },
-};
-
-
-/* clk_hsmcc_div
- *
- * this clock is sourced from epll, and is fed through a divider,
- * to a mux controlled by sclkcon where either it or a extclk can
- * be fed to the hsmmc block
-*/
-
-static struct clksrc_clk clk_hsmmc_div = {
-	.clk	= {
-		.name		= "hsmmc-div",
-		.devname	= "s3c-sdhci.1",
-		.parent		= &clk_esysclk.clk,
-	},
-	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 6 },
-};
-
-static int s3c2443_setparent_hsmmc(struct clk *clk, struct clk *parent)
-{
-	unsigned long clksrc = __raw_readl(S3C2443_SCLKCON);
-
-	clksrc &= ~(S3C2443_SCLKCON_HSMMCCLK_EXT |
-		    S3C2443_SCLKCON_HSMMCCLK_EPLL);
-
-	if (parent == &clk_epll)
-		clksrc |= S3C2443_SCLKCON_HSMMCCLK_EPLL;
-	else if (parent == &clk_ext)
-		clksrc |= S3C2443_SCLKCON_HSMMCCLK_EXT;
-	else
-		return -EINVAL;
-
-	if (clk->usage > 0) {
-		__raw_writel(clksrc, S3C2443_SCLKCON);
-	}
-
-	clk->parent = parent;
-	return 0;
-}
-
-static int s3c2443_enable_hsmmc(struct clk *clk, int enable)
-{
-	return s3c2443_setparent_hsmmc(clk, clk->parent);
-}
-
-static struct clk clk_hsmmc = {
-	.name		= "hsmmc-if",
-	.devname	= "s3c-sdhci.1",
-	.parent		= &clk_hsmmc_div.clk,
-	.enable		= s3c2443_enable_hsmmc,
-	.ops		= &(struct clk_ops) {
-		.set_parent	= s3c2443_setparent_hsmmc,
-	},
-};
-
-/* standard clock definitions */
-
-static struct clk init_clocks_off[] = {
-	{
-		.name		= "sdi",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_SDI,
-	}, {
-		.name		= "spi",
-		.devname	= "s3c2410-spi.0",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_SPI1,
-	}
-};
-
-/* clocks to add straight away */
-
-static struct clksrc_clk *clksrcs[] __initdata = {
-	&clk_hsspi,
-	&clk_hsmmc_div,
-};
-
-static struct clk *clks[] __initdata = {
-	&clk_hsmmc,
-};
-
-static struct clk_lookup s3c2443_clk_lookup[] = {
-	CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &clk_hsmmc),
-	CLKDEV_INIT("s3c2443-spi.0", "spi_busclk2", &clk_hsspi.clk),
-};
-
-void __init s3c2443_init_clocks(int xtal)
-{
-	unsigned long epllcon = __raw_readl(S3C2443_EPLLCON);
-	int ptr;
-
-	clk_epll.rate = s3c2443_get_epll(epllcon, xtal);
-	clk_epll.parent = &clk_epllref.clk;
-
-	s3c2443_common_init_clocks(xtal, s3c2443_get_mpll,
-				   armdiv, ARRAY_SIZE(armdiv),
-				   S3C2443_CLKDIV0_ARMDIV_MASK);
-
-	s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
-
-	for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
-		s3c_register_clksrc(clksrcs[ptr], 1);
-
-	/* We must be careful disabling the clocks we are not intending to
-	 * be using at boot time, as subsystems such as the LCD which do
-	 * their own DMA requests to the bus can cause the system to lockup
-	 * if they where in the middle of requesting bus access.
-	 *
-	 * Disabling the LCD clock if the LCD is active is very dangerous,
-	 * and therefore the bootloader should be careful to not enable
-	 * the LCD clock if it is not needed.
-	*/
-
-	/* install (and disable) the clocks we do not need immediately */
-
-	s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
-	s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
-	clkdev_add_table(s3c2443_clk_lookup, ARRAY_SIZE(s3c2443_clk_lookup));
-}

arch/arm/mach-s3c24xx/clock-s3c244x.c

-/* linux/arch/arm/plat-s3c24xx/s3c24xx-clock.c
- *
- * Copyright (c) 2004-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2440/S3C2442 Common clock support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <linux/atomic.h>
-#include <asm/irq.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-static int s3c2440_setparent_armclk(struct clk *clk, struct clk *parent)
-{
-	unsigned long camdivn;
-	unsigned long dvs;
-
-	if (parent == &clk_f)
-		dvs = 0;
-	else if (parent == &clk_h)
-		dvs = S3C2440_CAMDIVN_DVSEN;
-	else
-		return -EINVAL;
-
-	clk->parent = parent;
-
-	camdivn  = __raw_readl(S3C2440_CAMDIVN);
-	camdivn &= ~S3C2440_CAMDIVN_DVSEN;
-	camdivn |= dvs;
-	__raw_writel(camdivn, S3C2440_CAMDIVN);
-
-	return 0;
-}
-
-static struct clk clk_arm = {
-	.name		= "armclk",
-	.id		= -1,
-	.ops		= &(struct clk_ops) {
-		.set_parent	= s3c2440_setparent_armclk,
-	},
-};
-
-static int s3c244x_clk_add(struct device *dev, struct subsys_interface *sif)
-{
-	unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
-	unsigned long clkdivn;
-	struct clk *clock_upll;
-	int ret;
-
-	printk("S3C244X: Clock Support, DVS %s\n",
-	       (camdivn & S3C2440_CAMDIVN_DVSEN) ? "on" : "off");
-
-	clk_arm.parent = (camdivn & S3C2440_CAMDIVN_DVSEN) ? &clk_h : &clk_f;
-
-	ret = s3c24xx_register_clock(&clk_arm);
-	if (ret < 0) {
-		printk(KERN_ERR "S3C24XX: Failed to add armclk (%d)\n", ret);
-		return ret;
-	}
-
-	clock_upll = clk_get(NULL, "upll");
-	if (IS_ERR(clock_upll)) {
-		printk(KERN_ERR "S3C244X: Failed to get upll clock\n");
-		return -ENOENT;
-	}
-
-	/* check rate of UPLL, and if it is near 96MHz, then change
-	 * to using half the UPLL rate for the system */
-
-	if (clk_get_rate(clock_upll) > (94 * MHZ)) {
-		clk_usb_bus.rate = clk_get_rate(clock_upll) / 2;
-
-		spin_lock(&clocks_lock);
-
-		clkdivn = __raw_readl(S3C2410_CLKDIVN);
-		clkdivn |= S3C2440_CLKDIVN_UCLK;
-		__raw_writel(clkdivn, S3C2410_CLKDIVN);
-
-		spin_unlock(&clocks_lock);
-	}
-
-	return 0;
-}
-
-static struct subsys_interface s3c2440_clk_interface = {
-	.name		= "s3c2440_clk",
-	.subsys		= &s3c2440_subsys,
-	.add_dev	= s3c244x_clk_add,
-};
-
-static int s3c2440_clk_init(void)
-{
-	return subsys_interface_register(&s3c2440_clk_interface);
-}
-
-arch_initcall(s3c2440_clk_init);
-
-static struct subsys_interface s3c2442_clk_interface = {
-	.name		= "s3c2442_clk",
-	.subsys		= &s3c2442_subsys,
-	.add_dev	= s3c244x_clk_add,
-};
-
-static int s3c2442_clk_init(void)
-{
-	return subsys_interface_register(&s3c2442_clk_interface);
-}
-
-arch_initcall(s3c2442_clk_init);

arch/arm/mach-s3c24xx/common-s3c2443.c

-/*
- * Common code for SoCs starting with the S3C2443
- *
- * Copyright (c) 2007, 2010 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/init.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <mach/regs-s3c2443-clock.h>
-
-#include <plat/clock.h>
-#include <plat/clock-clksrc.h>
-#include <plat/cpu.h>
-
-#include <plat/cpu-freq.h>
-
-
-static int s3c2443_gate(void __iomem *reg, struct clk *clk, int enable)
-{
-	u32 ctrlbit = clk->ctrlbit;
-	u32 con = __raw_readl(reg);
-
-	if (enable)
-		con |= ctrlbit;
-	else
-		con &= ~ctrlbit;
-
-	__raw_writel(con, reg);
-	return 0;
-}
-
-int s3c2443_clkcon_enable_h(struct clk *clk, int enable)
-{
-	return s3c2443_gate(S3C2443_HCLKCON, clk, enable);
-}
-
-int s3c2443_clkcon_enable_p(struct clk *clk, int enable)
-{
-	return s3c2443_gate(S3C2443_PCLKCON, clk, enable);
-}
-
-int s3c2443_clkcon_enable_s(struct clk *clk, int enable)
-{
-	return s3c2443_gate(S3C2443_SCLKCON, clk, enable);
-}
-
-/* mpllref is a direct descendant of clk_xtal by default, but it is not
- * elided as the EPLL can be either sourced by the XTAL or EXTCLK and as
- * such directly equating the two source clocks is impossible.
- */
-static struct clk clk_mpllref = {
-	.name		= "mpllref",
-	.parent		= &clk_xtal,
-};
-
-static struct clk *clk_epllref_sources[] = {
-	[0] = &clk_mpllref,
-	[1] = &clk_mpllref,
-	[2] = &clk_xtal,
-	[3] = &clk_ext,
-};
-
-struct clksrc_clk clk_epllref = {
-	.clk	= {
-		.name		= "epllref",
-	},
-	.sources = &(struct clksrc_sources) {
-		.sources = clk_epllref_sources,
-		.nr_sources = ARRAY_SIZE(clk_epllref_sources),
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 7 },
-};
-
-/* esysclk
- *
- * this is sourced from either the EPLL or the EPLLref clock
-*/
-
-static struct clk *clk_sysclk_sources[] = {
-	[0] = &clk_epllref.clk,
-	[1] = &clk_epll,
-};
-
-struct clksrc_clk clk_esysclk = {
-	.clk	= {
-		.name		= "esysclk",
-		.parent		= &clk_epll,
-	},
-	.sources = &(struct clksrc_sources) {
-		.sources = clk_sysclk_sources,
-		.nr_sources = ARRAY_SIZE(clk_sysclk_sources),
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 6 },
-};
-
-static unsigned long s3c2443_getrate_mdivclk(struct clk *clk)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long div = __raw_readl(S3C2443_CLKDIV0);
-
-	div  &= S3C2443_CLKDIV0_EXTDIV_MASK;
-	div >>= (S3C2443_CLKDIV0_EXTDIV_SHIFT-1);	/* x2 */
-
-	return parent_rate / (div + 1);
-}
-
-static struct clk clk_mdivclk = {
-	.name		= "mdivclk",
-	.parent		= &clk_mpllref,
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2443_getrate_mdivclk,
-	},
-};
-
-static struct clk *clk_msysclk_sources[] = {
-	[0] = &clk_mpllref,
-	[1] = &clk_mpll,
-	[2] = &clk_mdivclk,
-	[3] = &clk_mpllref,
-};
-
-static struct clksrc_clk clk_msysclk = {
-	.clk	= {
-		.name		= "msysclk",
-		.parent		= &clk_xtal,
-	},
-	.sources = &(struct clksrc_sources) {
-		.sources = clk_msysclk_sources,
-		.nr_sources = ARRAY_SIZE(clk_msysclk_sources),
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 3 },
-};
-
-/* prediv
- *
- * this divides the msysclk down to pass to h/p/etc.
- */
-
-static unsigned long s3c2443_prediv_getrate(struct clk *clk)
-{
-	unsigned long rate = clk_get_rate(clk->parent);
-	unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0);
-
-	clkdiv0 &= S3C2443_CLKDIV0_PREDIV_MASK;
-	clkdiv0 >>= S3C2443_CLKDIV0_PREDIV_SHIFT;
-
-	return rate / (clkdiv0 + 1);
-}
-
-static struct clk clk_prediv = {
-	.name		= "prediv",
-	.parent		= &clk_msysclk.clk,
-	.ops		= &(struct clk_ops) {
-		.get_rate	= s3c2443_prediv_getrate,
-	},
-};
-
-/* hclk divider
- *
- * divides the prediv and provides the hclk.
- */
-
-static unsigned long s3c2443_hclkdiv_getrate(struct clk *clk)
-{
-	unsigned long rate = clk_get_rate(clk->parent);
-	unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0);
-
-	clkdiv0 &= S3C2443_CLKDIV0_HCLKDIV_MASK;
-
-	return rate / (clkdiv0 + 1);
-}
-
-static struct clk_ops clk_h_ops = {
-	.get_rate	= s3c2443_hclkdiv_getrate,
-};
-
-/* pclk divider
- *
- * divides the hclk and provides the pclk.
- */
-
-static unsigned long s3c2443_pclkdiv_getrate(struct clk *clk)
-{
-	unsigned long rate = clk_get_rate(clk->parent);
-	unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0);
-
-	clkdiv0 = ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 1 : 0);
-
-	return rate / (clkdiv0 + 1);
-}
-
-static struct clk_ops clk_p_ops = {
-	.get_rate	= s3c2443_pclkdiv_getrate,
-};
-
-/* armdiv
- *
- * this clock is sourced from msysclk and can have a number of
- * divider values applied to it to then be fed into armclk.
-*/
-
-static unsigned int *armdiv;
-static int nr_armdiv;
-static int armdivmask;
-
-static unsigned long s3c2443_armclk_roundrate(struct clk *clk,
-					      unsigned long rate)
-{
-	unsigned long parent = clk_get_rate(clk->parent);
-	unsigned long calc;
-	unsigned best = 256; /* bigger than any value */
-	unsigned div;
-	int ptr;
-
-	if (!nr_armdiv)
-		return -EINVAL;
-
-	for (ptr = 0; ptr < nr_armdiv; ptr++) {
-		div = armdiv[ptr];
-		if (div) {
-			/* cpufreq provides 266mhz as 266666000 not 266666666 */
-			calc = (parent / div / 1000) * 1000;
-			if (calc <= rate && div < best)
-				best = div;
-		}
-	}
-
-	return parent / best;
-}
-
-static unsigned long s3c2443_armclk_getrate(struct clk *clk)
-{
-	unsigned long rate = clk_get_rate(clk->parent);
-	unsigned long clkcon0;
-	int val;
-
-	if (!nr_armdiv || !armdivmask)
-		return -EINVAL;
-
-	clkcon0 = __raw_readl(S3C2443_CLKDIV0);
-	clkcon0 &= armdivmask;
-	val = clkcon0 >> S3C2443_CLKDIV0_ARMDIV_SHIFT;
-
-	return rate / armdiv[val];
-}
-
-static int s3c2443_armclk_setrate(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent = clk_get_rate(clk->parent);
-	unsigned long calc;
-	unsigned div;
-	unsigned best = 256; /* bigger than any value */
-	int ptr;
-	int val = -1;
-
-	if (!nr_armdiv || !armdivmask)
-		return -EINVAL;
-
-	for (ptr = 0; ptr < nr_armdiv; ptr++) {
-		div = armdiv[ptr];
-		if (div) {
-			/* cpufreq provides 266mhz as 266666000 not 266666666 */
-			calc = (parent / div / 1000) * 1000;
-			if (calc <= rate && div < best) {
-				best = div;
-				val = ptr;
-			}
-		}
-	}
-
-	if (val >= 0) {
-		unsigned long clkcon0;
-
-		clkcon0 = __raw_readl(S3C2443_CLKDIV0);
-		clkcon0 &= ~armdivmask;
-		clkcon0 |= val << S3C2443_CLKDIV0_ARMDIV_SHIFT;
-		__raw_writel(clkcon0, S3C2443_CLKDIV0);
-	}
-
-	return (val == -1) ? -EINVAL : 0;
-}
-
-static struct clk clk_armdiv = {
-	.name		= "armdiv",
-	.parent		= &clk_msysclk.clk,
-	.ops		= &(struct clk_ops) {
-		.round_rate = s3c2443_armclk_roundrate,
-		.get_rate = s3c2443_armclk_getrate,
-		.set_rate = s3c2443_armclk_setrate,
-	},
-};
-
-/* armclk
- *
- * this is the clock fed into the ARM core itself, from armdiv or from hclk.
- */
-
-static struct clk *clk_arm_sources[] = {
-	[0] = &clk_armdiv,
-	[1] = &clk_h,
-};
-
-static struct clksrc_clk clk_arm = {
-	.clk	= {
-		.name		= "armclk",
-	},
-	.sources = &(struct clksrc_sources) {
-		.sources = clk_arm_sources,
-		.nr_sources = ARRAY_SIZE(clk_arm_sources),
-	},
-	.reg_src = { .reg = S3C2443_CLKDIV0, .size = 1, .shift = 13 },
-};
-
-/* usbhost
- *
- * usb host bus-clock, usually 48MHz to provide USB bus clock timing
-*/
-
-static struct clksrc_clk clk_usb_bus_host = {
-	.clk	= {
-		.name		= "usb-bus-host-parent",
-		.parent		= &clk_esysclk.clk,
-		.ctrlbit	= S3C2443_SCLKCON_USBHOST,
-		.enable		= s3c2443_clkcon_enable_s,
-	},
-	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 4 },
-};
-
-/* common clksrc clocks */
-
-static struct clksrc_clk clksrc_clks[] = {
-	{
-		/* camera interface bus-clock, divided down from esysclk */
-		.clk	= {
-			.name		= "camif-upll",	/* same as 2440 name */
-			.parent		= &clk_esysclk.clk,
-			.ctrlbit	= S3C2443_SCLKCON_CAMCLK,
-			.enable		= s3c2443_clkcon_enable_s,
-		},
-		.reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 26 },
-	}, {
-		.clk	= {
-			.name		= "display-if",
-			.parent		= &clk_esysclk.clk,
-			.ctrlbit	= S3C2443_SCLKCON_DISPCLK,
-			.enable		= s3c2443_clkcon_enable_s,
-		},
-		.reg_div = { .reg = S3C2443_CLKDIV1, .size = 8, .shift = 16 },
-	},
-};
-
-static struct clksrc_clk clk_esys_uart = {
-	/* ART baud-rate clock sourced from esysclk via a divisor */
-	.clk	= {
-		.name		= "uartclk",
-		.parent		= &clk_esysclk.clk,
-	},
-	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 8 },
-};
-
-static struct clk clk_i2s_ext = {
-	.name		= "i2s-ext",
-};
-
-/* i2s_eplldiv
- *
- * This clock is the output from the I2S divisor of ESYSCLK, and is separate
- * from the mux that comes after it (cannot merge into one single clock)
-*/
-
-static struct clksrc_clk clk_i2s_eplldiv = {
-	.clk	= {
-		.name		= "i2s-eplldiv",
-		.parent		= &clk_esysclk.clk,
-	},
-	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 12, },
-};
-
-/* i2s-ref
- *
- * i2s bus reference clock, selectable from external, esysclk or epllref
- *
- * Note, this used to be two clocks, but was compressed into one.
-*/
-
-static struct clk *clk_i2s_srclist[] = {
-	[0] = &clk_i2s_eplldiv.clk,
-	[1] = &clk_i2s_ext,
-	[2] = &clk_epllref.clk,
-	[3] = &clk_epllref.clk,
-};
-
-static struct clksrc_clk clk_i2s = {
-	.clk	= {
-		.name		= "i2s-if",
-		.ctrlbit	= S3C2443_SCLKCON_I2SCLK,
-		.enable		= s3c2443_clkcon_enable_s,
-
-	},
-	.sources = &(struct clksrc_sources) {
-		.sources = clk_i2s_srclist,
-		.nr_sources = ARRAY_SIZE(clk_i2s_srclist),
-	},
-	.reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 14 },
-};
-
-static struct clk init_clocks_off[] = {
-	{
-		.name		= "iis",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_IIS,
-	}, {
-		.name		= "adc",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_ADC,
-	}, {
-		.name		= "i2c",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_IIC,
-	}
-};
-
-static struct clk init_clocks[] = {
-	{
-		.name		= "dma.0",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_DMA0,
-	}, {
-		.name		= "dma.1",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_DMA1,
-	}, {
-		.name		= "dma.2",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_DMA2,
-	}, {
-		.name		= "dma.3",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_DMA3,
-	}, {
-		.name		= "dma.4",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_DMA4,
-	}, {
-		.name		= "dma.5",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_DMA5,
-	}, {
-		.name		= "gpio",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_GPIO,
-	}, {
-		.name		= "usb-host",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_USBH,
-	}, {
-		.name		= "usb-device",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_USBD,
-	}, {
-		.name		= "lcd",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_LCDC,
-
-	}, {
-		.name		= "timers",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_PWMT,
-	}, {
-		.name		= "cfc",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_CFC,
-	}, {
-		.name		= "ssmc",
-		.parent		= &clk_h,
-		.enable		= s3c2443_clkcon_enable_h,
-		.ctrlbit	= S3C2443_HCLKCON_SSMC,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2440-uart.0",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_UART0,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2440-uart.1",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_UART1,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2440-uart.2",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_UART2,
-	}, {
-		.name		= "uart",
-		.devname	= "s3c2440-uart.3",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_UART3,
-	}, {
-		.name		= "rtc",
-		.parent		= &clk_p,
-		.enable		= s3c2443_clkcon_enable_p,
-		.ctrlbit	= S3C2443_PCLKCON_RTC,
-	}, {
-		.name		= "watchdog",
-		.parent		= &clk_p,
-		.ctrlbit	= S3C2443_PCLKCON_WDT,
-	}, {
-		.name		= "ac97",
-		.parent		= &clk_p,
-		.ctrlbit	= S3C2443_PCLKCON_AC97,
-	}, {
-		.name		= "nand",
-		.parent		= &clk_h,
-	}, {
-		.name		= "usb-bus-host",
-		.parent		= &clk_usb_bus_host.clk,
-	}
-};
-
-static struct clk hsmmc1_clk = {
-	.name		= "hsmmc",
-	.devname	= "s3c-sdhci.1",
-	.parent		= &clk_h,
-	.enable		= s3c2443_clkcon_enable_h,
-	.ctrlbit	= S3C2443_HCLKCON_HSMMC,
-};
-
-static struct clk hsspi_clk = {
-	.name		= "spi",
-	.devname	= "s3c2443-spi.0",
-	.parent		= &clk_p,
-	.enable		= s3c2443_clkcon_enable_p,
-	.ctrlbit	= S3C2443_PCLKCON_HSSPI,
-};
-
-/* EPLLCON compatible enough to get on/off information */
-
-void __init_or_cpufreq s3c2443_common_setup_clocks(pll_fn get_mpll)
-{
-	unsigned long epllcon = __raw_readl(S3C2443_EPLLCON);
-	unsigned long mpllcon = __raw_readl(S3C2443_MPLLCON);
-	struct clk *xtal_clk;
-	unsigned long xtal;
-	unsigned long pll;
-	int ptr;
-
-	xtal_clk = clk_get(NULL, "xtal");
-	xtal = clk_get_rate(xtal_clk);
-	clk_put(xtal_clk);
-
-	pll = get_mpll(mpllcon, xtal);
-	clk_msysclk.clk.rate = pll;
-	clk_mpll.rate = pll;
-
-	printk("CPU: MPLL %s %ld.%03ld MHz, cpu %ld.%03ld MHz, mem %ld.%03ld MHz, pclk %ld.%03ld MHz\n",
-	       (mpllcon & S3C2443_PLLCON_OFF) ? "off" : "on",
-	       print_mhz(pll), print_mhz(clk_get_rate(&clk_armdiv)),
-	       print_mhz(clk_get_rate(&clk_h)),
-	       print_mhz(clk_get_rate(&clk_p)));
-
-	for (ptr = 0; ptr < ARRAY_SIZE(clksrc_clks); ptr++)
-		s3c_set_clksrc(&clksrc_clks[ptr], true);
-
-	/* ensure usb bus clock is within correct rate of 48MHz */
-
-	if (clk_get_rate(&clk_usb_bus_host.clk) != (48 * 1000 * 1000)) {
-		printk(KERN_INFO "Warning: USB host bus not at 48MHz\n");
-		clk_set_rate(&clk_usb_bus_host.clk, 48*1000*1000);
-	}
-
-	printk("CPU: EPLL %s %ld.%03ld MHz, usb-bus %ld.%03ld MHz\n",
-	       (epllcon & S3C2443_PLLCON_OFF) ? "off" : "on",
-	       print_mhz(clk_get_rate(&clk_epll)),
-	       print_mhz(clk_get_rate(&clk_usb_bus)));
-}
-
-static struct clk *clks[] __initdata = {
-	&clk_prediv,
-	&clk_mpllref,
-	&clk_mdivclk,
-	&clk_ext,
-	&clk_epll,
-	&clk_usb_bus,
-	&clk_armdiv,
-	&hsmmc1_clk,
-	&hsspi_clk,
-};
-
-static struct clksrc_clk *clksrcs[] __initdata = {
-	&clk_i2s_eplldiv,
-	&clk_i2s,
-	&clk_usb_bus_host,
-	&clk_epllref,
-	&clk_esysclk,
-	&clk_msysclk,
-	&clk_arm,
-};
-
-static struct clk_lookup s3c2443_clk_lookup[] = {
-	CLKDEV_INIT(NULL, "clk_uart_baud1", &s3c24xx_uclk),
-	CLKDEV_INIT(NULL, "clk_uart_baud2", &clk_p),
-	CLKDEV_INIT(NULL, "clk_uart_baud3", &clk_esys_uart.clk),
-	CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.0", &hsmmc1_clk),
-	CLKDEV_INIT("s3c2443-spi.0", "spi_busclk0", &hsspi_clk),
-};
-
-void __init s3c2443_common_init_clocks(int xtal, pll_fn get_mpll,
-				       unsigned int *divs, int nr_divs,
-				       int divmask)
-{
-	int ptr;
-
-	armdiv = divs;
-	nr_armdiv = nr_divs;
-	armdivmask = divmask;
-
-	/* s3c2443 parents h clock from prediv */
-	clk_h.parent = &clk_prediv;
-	clk_h.ops = &clk_h_ops;
-
-	/* and p clock from h clock */
-	clk_p.parent = &clk_h;
-	clk_p.ops = &clk_p_ops;
-
-	clk_usb_bus.parent = &clk_usb_bus_host.clk;
-	clk_epll.parent = &clk_epllref.clk;
-
-	s3c24xx_register_baseclocks(xtal);
-	s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
-
-	for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
-		s3c_register_clksrc(clksrcs[ptr], 1);
-
-	s3c_register_clksrc(clksrc_clks, ARRAY_SIZE(clksrc_clks));
-	s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
-
-	/* See s3c2443/etc notes on disabling clocks at init time */
-	s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
-	s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
-	clkdev_add_table(s3c2443_clk_lookup, ARRAY_SIZE(s3c2443_clk_lookup));
-
-	s3c2443_common_setup_clocks(get_mpll);
-}

arch/arm/mach-s3c24xx/common.c

@@ -53,6 +53,7 @@
 #include <plat/cpu-freq.h>
 #include <plat/pll.h>
 #include <plat/pwm-core.h>
+#include <plat/watchdog-reset.h>
 
 #include "common.h"
 
@@ -73,7 +74,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32410000,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2410_map_io,
-		.init_clocks	= s3c2410_init_clocks,
 		.init_uarts	= s3c2410_init_uarts,
 		.init		= s3c2410_init,
 		.name		= name_s3c2410
@@ -82,7 +82,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32410002,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2410_map_io,
-		.init_clocks	= s3c2410_init_clocks,
 		.init_uarts	= s3c2410_init_uarts,
 		.init		= s3c2410a_init,
 		.name		= name_s3c2410a
@@ -91,7 +90,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32440000,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2440_map_io,
-		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2440_init,
 		.name		= name_s3c2440
@@ -100,7 +98,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32440001,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2440_map_io,
-		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2440_init,
 		.name		= name_s3c2440a
@@ -109,7 +106,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32440aaa,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2442_map_io,
-		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2442_init,
 		.name		= name_s3c2442
@@ -118,7 +114,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32440aab,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2442_map_io,
-		.init_clocks	= s3c244x_init_clocks,
 		.init_uarts	= s3c244x_init_uarts,
 		.init		= s3c2442_init,
 		.name		= name_s3c2442b
@@ -127,7 +122,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32412001,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2412_map_io,
-		.init_clocks	= s3c2412_init_clocks,
 		.init_uarts	= s3c2412_init_uarts,
 		.init		= s3c2412_init,
 		.name		= name_s3c2412,
@@ -136,7 +130,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32412003,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2412_map_io,
-		.init_clocks	= s3c2412_init_clocks,
 		.init_uarts	= s3c2412_init_uarts,
 		.init		= s3c2412_init,
 		.name		= name_s3c2412,
@@ -145,7 +138,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32450003,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2416_map_io,
-		.init_clocks	= s3c2416_init_clocks,
 		.init_uarts	= s3c2416_init_uarts,
 		.init		= s3c2416_init,
 		.name		= name_s3c2416,
@@ -154,7 +146,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.idcode		= 0x32443001,
 		.idmask		= 0xffffffff,
 		.map_io		= s3c2443_map_io,
-		.init_clocks	= s3c2443_init_clocks,
 		.init_uarts	= s3c2443_init_uarts,
 		.init		= s3c2443_init,
 		.name		= name_s3c2443,
@@ -316,21 +307,6 @@ struct s3c24xx_uart_resources s3c2410_uart_resources[] __initdata = {
 	},
 };
 
-/* initialise all the clocks */
-
-void __init_or_cpufreq s3c24xx_setup_clocks(unsigned long fclk,
-					   unsigned long hclk,
-					   unsigned long pclk)
-{
-	clk_upll.rate = s3c24xx_get_pll(__raw_readl(S3C2410_UPLLCON),
-					clk_xtal.rate);
-
-	clk_mpll.rate = fclk;
-	clk_h.rate = hclk;
-	clk_p.rate = pclk;
-	clk_f.rate = fclk;
-}
-
 #if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2412) || \
 	defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
 static struct resource s3c2410_dma_resource[] = {
@@ -534,3 +510,62 @@ struct platform_device s3c2443_device_dma = {
 	},
 };
 #endif
+
+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_CPU_S3C2410)
+void __init s3c2410_init_clocks(int xtal)
+{
+	s3c2410_common_clk_init(NULL, xtal, 0, S3C24XX_VA_CLKPWR);
+	samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
+}
+#endif
+
+#ifdef CONFIG_CPU_S3C2412
+void __init s3c2412_init_clocks(int xtal)
+{
+	s3c2412_common_clk_init(NULL, xtal, 0, S3C24XX_VA_CLKPWR);
+}
+#endif
+
+#ifdef CONFIG_CPU_S3C2416
+void __init s3c2416_init_clocks(int xtal)
+{
+	s3c2443_common_clk_init(NULL, xtal, 0, S3C24XX_VA_CLKPWR);
+}
+#endif
+
+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_CPU_S3C2440)
+void __init s3c2440_init_clocks(int xtal)
+{
+	s3c2410_common_clk_init(NULL, xtal, 1, S3C24XX_VA_CLKPWR);
+	samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
+}
+#endif
+
+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_CPU_S3C2442)
+void __init s3c2442_init_clocks(int xtal)
+{
+	s3c2410_common_clk_init(NULL, xtal, 2, S3C24XX_VA_CLKPWR);
+	samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
+}
+#endif
+
+#ifdef CONFIG_CPU_S3C2443
+void __init s3c2443_init_clocks(int xtal)
+{
+	s3c2443_common_clk_init(NULL, xtal, 1, S3C24XX_VA_CLKPWR);
+}
+#endif
+
+#if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2440) || \
+	defined(CONFIG_CPU_S3C2442)
+static struct resource s3c2410_dclk_resource[] = {
+	[0] = DEFINE_RES_MEM(0x56000084, 0x4),
+};
+
+struct platform_device s3c2410_device_dclk = {
+	.name		= "s3c2410-dclk",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(s3c2410_dclk_resource),
+	.resource	= s3c2410_dclk_resource,
+};
+#endif

arch/arm/mach-s3c24xx/common.h

@@ -67,16 +67,15 @@ extern struct syscore_ops s3c2416_irq_syscore_ops;
 #if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
 extern void s3c244x_map_io(void);
 extern void s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no);
-extern void s3c244x_init_clocks(int xtal);
 extern void s3c244x_restart(enum reboot_mode mode, const char *cmd);
 #else
-#define s3c244x_init_clocks NULL
 #define s3c244x_init_uarts NULL
 #endif
 
 #ifdef CONFIG_CPU_S3C2440
 extern  int s3c2440_init(void);
 extern void s3c2440_map_io(void);
+extern void s3c2440_init_clocks(int xtal);
 extern void s3c2440_init_irq(void);
 #else
 #define s3c2440_init NULL
@@ -86,6 +85,7 @@ extern void s3c2440_init_irq(void);
 #ifdef CONFIG_CPU_S3C2442
 extern  int s3c2442_init(void);
 extern void s3c2442_map_io(void);
+extern void s3c2442_init_clocks(int xtal);
 extern void s3c2442_init_irq(void);
 #else
 #define s3c2442_init NULL
@@ -114,4 +114,21 @@ extern struct platform_device s3c2412_device_dma;
 extern struct platform_device s3c2440_device_dma;
 extern struct platform_device s3c2443_device_dma;
 
+extern struct platform_device s3c2410_device_dclk;
+
+#ifdef CONFIG_S3C2410_COMMON_CLK
+void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
+				    int current_soc,
+				    void __iomem *reg_base);
+#endif
+#ifdef CONFIG_S3C2412_COMMON_CLK
+void __init s3c2412_common_clk_init(struct device_node *np, unsigned long xti_f,
+				unsigned long ext_f, void __iomem *reg_base);
+#endif
+#ifdef CONFIG_S3C2443_COMMON_CLK
+void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f,
+				    int current_soc,
+				    void __iomem *reg_base);
+#endif
+
 #endif /* __ARCH_ARM_MACH_S3C24XX_COMMON_H */

arch/arm/mach-s3c24xx/cpufreq-utils.c

@@ -14,6 +14,7 @@
 #include <linux/errno.h>
 #include <linux/cpufreq.h>
 #include <linux/io.h>
+#include <linux/clk.h>
 
 #include <mach/map.h>
 #include <mach/regs-clock.h>
@@ -60,5 +61,6 @@ void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
  */
 void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg)
 {
-	__raw_writel(cfg->pll.driver_data, S3C2410_MPLLCON);
+	if (!IS_ERR(cfg->mpll))
+		clk_set_rate(cfg->mpll, cfg->pll.frequency);
 }

arch/arm/mach-s3c24xx/include/mach/regs-clock.h

@@ -42,24 +42,6 @@
 #define S3C2410_CLKCON_IIS	     (1<<17)
 #define S3C2410_CLKCON_SPI	     (1<<18)
 
-/* DCLKCON register addresses in gpio.h */
-
-#define S3C2410_DCLKCON_DCLK0EN	     (1<<0)
-#define S3C2410_DCLKCON_DCLK0_PCLK   (0<<1)
-#define S3C2410_DCLKCON_DCLK0_UCLK   (1<<1)
-#define S3C2410_DCLKCON_DCLK0_DIV(x) (((x) - 1 )<<4)
-#define S3C2410_DCLKCON_DCLK0_CMP(x) (((x) - 1 )<<8)
-#define S3C2410_DCLKCON_DCLK0_DIV_MASK ((0xf)<<4)
-#define S3C2410_DCLKCON_DCLK0_CMP_MASK ((0xf)<<8)
-
-#define S3C2410_DCLKCON_DCLK1EN	     (1<<16)
-#define S3C2410_DCLKCON_DCLK1_PCLK   (0<<17)
-#define S3C2410_DCLKCON_DCLK1_UCLK   (1<<17)
-#define S3C2410_DCLKCON_DCLK1_DIV(x) (((x) - 1) <<20)
-#define S3C2410_DCLKCON_DCLK1_CMP(x) (((x) - 1) <<24)
-#define S3C2410_DCLKCON_DCLK1_DIV_MASK ((0xf) <<20)
-#define S3C2410_DCLKCON_DCLK1_CMP_MASK ((0xf) <<24)
-
 #define S3C2410_CLKDIVN_PDIVN	     (1<<0)
 #define S3C2410_CLKDIVN_HDIVN	     (1<<1)
 

arch/arm/mach-s3c24xx/include/mach/regs-gpio.h

@@ -457,9 +457,6 @@
 
 /* miscellaneous control */
 #define S3C2410_MISCCR	   S3C2410_GPIOREG(0x80)
-#define S3C2410_DCLKCON	   S3C2410_GPIOREG(0x84)
-
-#define S3C24XX_DCLKCON	   S3C24XX_GPIOREG2(0x84)
 
 /* see clock.h for dclk definitions */
 

arch/arm/mach-s3c24xx/mach-amlm5900.c

@@ -161,11 +161,16 @@ static struct platform_device *amlm5900_devices[] __initdata = {
 static void __init amlm5900_map_io(void)
 {
 	s3c24xx_init_io(amlm5900_iodesc, ARRAY_SIZE(amlm5900_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(amlm5900_uartcfgs, ARRAY_SIZE(amlm5900_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init amlm5900_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 #ifdef CONFIG_FB_S3C2410
 static struct s3c2410fb_display __initdata amlm5900_lcd_info = {
 	.width		= 160,
@@ -241,6 +246,6 @@ MACHINE_START(AML_M5900, "AML_M5900")
 	.map_io		= amlm5900_map_io,
 	.init_irq	= s3c2410_init_irq,
 	.init_machine	= amlm5900_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= amlm5900_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-anubis.c

@@ -46,7 +46,6 @@
 
 #include <net/ax88796.h>
 
-#include <plat/clock.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <linux/platform_data/asoc-s3c24xx_simtec.h>
@@ -352,6 +351,7 @@ static struct platform_device anubis_device_sm501 = {
 /* Standard Anubis devices */
 
 static struct platform_device *anubis_devices[] __initdata = {
+	&s3c2410_device_dclk,
 	&s3c_device_ohci,
 	&s3c_device_wdt,
 	&s3c_device_adc,
@@ -364,14 +364,6 @@ static struct platform_device *anubis_devices[] __initdata = {
 	&anubis_device_sm501,
 };
 
-static struct clk *anubis_clocks[] __initdata = {
-	&s3c24xx_dclk0,
-	&s3c24xx_dclk1,
-	&s3c24xx_clkout0,
-	&s3c24xx_clkout1,
-	&s3c24xx_uclk,
-};
-
 /* I2C devices. */
 
 static struct i2c_board_info anubis_i2c_devs[] __initdata = {
@@ -394,23 +386,7 @@ static struct s3c24xx_audio_simtec_pdata __initdata anubis_audio = {
 
 static void __init anubis_map_io(void)
 {
-	/* initialise the clocks */
-
-	s3c24xx_dclk0.parent = &clk_upll;
-	s3c24xx_dclk0.rate   = 12*1000*1000;
-
-	s3c24xx_dclk1.parent = &clk_upll;
-	s3c24xx_dclk1.rate   = 24*1000*1000;
-
-	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
-	s3c24xx_clkout1.parent  = &s3c24xx_dclk1;
-
-	s3c24xx_uclk.parent  = &s3c24xx_clkout1;
-
-	s3c24xx_register_clocks(anubis_clocks, ARRAY_SIZE(anubis_clocks));
-
 	s3c24xx_init_io(anubis_iodesc, ARRAY_SIZE(anubis_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(anubis_uartcfgs, ARRAY_SIZE(anubis_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 
@@ -428,6 +404,12 @@ static void __init anubis_map_io(void)
 	}
 }
 
+static void __init anubis_init_time(void)
+{
+	s3c2440_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init anubis_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -447,6 +429,6 @@ MACHINE_START(ANUBIS, "Simtec-Anubis")
 	.map_io		= anubis_map_io,
 	.init_machine	= anubis_init,
 	.init_irq	= s3c2440_init_irq,
-	.init_time	= samsung_timer_init,
+	.init_time	= anubis_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-at2440evb.c

@@ -45,7 +45,6 @@
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
 
-#include <plat/clock.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <linux/platform_data/mmc-s3cmci.h>
@@ -192,11 +191,16 @@ static struct platform_device *at2440evb_devices[] __initdata = {
 static void __init at2440evb_map_io(void)
 {
 	s3c24xx_init_io(at2440evb_iodesc, ARRAY_SIZE(at2440evb_iodesc));
-	s3c24xx_init_clocks(16934400);
 	s3c24xx_init_uarts(at2440evb_uartcfgs, ARRAY_SIZE(at2440evb_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init at2440evb_init_time(void)
+{
+	s3c2440_init_clocks(16934400);
+	samsung_timer_init();
+}
+
 static void __init at2440evb_init(void)
 {
 	s3c24xx_fb_set_platdata(&at2440evb_fb_info);
@@ -213,6 +217,6 @@ MACHINE_START(AT2440EVB, "AT2440EVB")
 	.map_io		= at2440evb_map_io,
 	.init_machine	= at2440evb_init,
 	.init_irq	= s3c2440_init_irq,
-	.init_time	= samsung_timer_init,
+	.init_time	= at2440evb_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-bast.c

@@ -51,7 +51,6 @@
 #include <mach/regs-lcd.h>
 #include <mach/gpio-samsung.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/cpu-freq.h>
 #include <plat/devs.h>
@@ -523,6 +522,7 @@ static struct s3c_hwmon_pdata bast_hwmon_info = {
 // cat /sys/devices/platform/s3c24xx-adc/s3c-hwmon/in_0
 
 static struct platform_device *bast_devices[] __initdata = {
+	&s3c2410_device_dclk,
 	&s3c_device_ohci,
 	&s3c_device_lcd,
 	&s3c_device_wdt,
@@ -537,14 +537,6 @@ static struct platform_device *bast_devices[] __initdata = {
 	&bast_sio,
 };
 
-static struct clk *bast_clocks[] __initdata = {
-	&s3c24xx_dclk0,
-	&s3c24xx_dclk1,
-	&s3c24xx_clkout0,
-	&s3c24xx_clkout1,
-	&s3c24xx_uclk,
-};
-
 static struct s3c_cpufreq_board __initdata bast_cpufreq = {
 	.refresh	= 7800, /* 7.8usec */
 	.auto_io	= 1,
@@ -558,29 +550,19 @@ static struct s3c24xx_audio_simtec_pdata __initdata bast_audio = {
 
 static void __init bast_map_io(void)
 {
-	/* initialise the clocks */
-
-	s3c24xx_dclk0.parent = &clk_upll;
-	s3c24xx_dclk0.rate   = 12*1000*1000;
-
-	s3c24xx_dclk1.parent = &clk_upll;
-	s3c24xx_dclk1.rate   = 24*1000*1000;
-
-	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
-	s3c24xx_clkout1.parent  = &s3c24xx_dclk1;
-
-	s3c24xx_uclk.parent  = &s3c24xx_clkout1;
-
-	s3c24xx_register_clocks(bast_clocks, ARRAY_SIZE(bast_clocks));
-
 	s3c_hwmon_set_platdata(&bast_hwmon_info);
 
 	s3c24xx_init_io(bast_iodesc, ARRAY_SIZE(bast_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(bast_uartcfgs, ARRAY_SIZE(bast_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init bast_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init bast_init(void)
 {
 	register_syscore_ops(&bast_pm_syscore_ops);
@@ -608,6 +590,6 @@ MACHINE_START(BAST, "Simtec-BAST")
 	.map_io		= bast_map_io,
 	.init_irq	= s3c2410_init_irq,
 	.init_machine	= bast_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= bast_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-gta02.c

@@ -501,7 +501,6 @@ static struct platform_device gta02_buttons_device = {
 static void __init gta02_map_io(void)
 {
 	s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
@@ -585,6 +584,11 @@ static void __init gta02_machine_init(void)
 	regulator_has_full_constraints();
 }
 
+static void __init gta02_init_time(void)
+{
+	s3c2442_init_clocks(12000000);
+	samsung_timer_init();
+}
 
 MACHINE_START(NEO1973_GTA02, "GTA02")
 	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
@@ -592,6 +596,6 @@ MACHINE_START(NEO1973_GTA02, "GTA02")
 	.map_io		= gta02_map_io,
 	.init_irq	= s3c2442_init_irq,
 	.init_machine	= gta02_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= gta02_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-h1940.c

@@ -57,7 +57,6 @@
 #include <mach/regs-lcd.h>
 #include <mach/gpio-samsung.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/gpio-cfg.h>
@@ -646,7 +645,6 @@ static struct platform_device *h1940_devices[] __initdata = {
 static void __init h1940_map_io(void)
 {
 	s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 
@@ -662,6 +660,12 @@ static void __init h1940_map_io(void)
 	WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 }
 
+static void __init h1940_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 /* H1940 and RX3715 need to reserve this for suspend */
 static void __init h1940_reserve(void)
 {
@@ -739,6 +743,6 @@ MACHINE_START(H1940, "IPAQ-H1940")
 	.reserve	= h1940_reserve,
 	.init_irq	= s3c2410_init_irq,
 	.init_machine	= h1940_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= h1940_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-jive.c

@@ -507,11 +507,16 @@ static struct syscore_ops jive_pm_syscore_ops = {
 static void __init jive_map_io(void)
 {
 	s3c24xx_init_io(jive_iodesc, ARRAY_SIZE(jive_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(jive_uartcfgs, ARRAY_SIZE(jive_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init jive_init_time(void)
+{
+	s3c2412_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void jive_power_off(void)
 {
 	printk(KERN_INFO "powering system down...\n");
@@ -665,6 +670,6 @@ MACHINE_START(JIVE, "JIVE")
 	.init_irq	= s3c2412_init_irq,
 	.map_io		= jive_map_io,
 	.init_machine	= jive_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= jive_init_time,
 	.restart	= s3c2412_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-mini2440.c

@@ -54,7 +54,6 @@
 #include <linux/mtd/partitions.h>
 
 #include <plat/gpio-cfg.h>
-#include <plat/clock.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/samsung-time.h>
@@ -525,11 +524,16 @@ static struct platform_device *mini2440_devices[] __initdata = {
 static void __init mini2440_map_io(void)
 {
 	s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init mini2440_init_time(void)
+{
+	s3c2440_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 /*
  * mini2440_features string
  *
@@ -690,6 +694,6 @@ MACHINE_START(MINI2440, "MINI2440")
 	.map_io		= mini2440_map_io,
 	.init_machine	= mini2440_init,
 	.init_irq	= s3c2440_init_irq,
-	.init_time	= samsung_timer_init,
+	.init_time	= mini2440_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-n30.c

@@ -45,7 +45,6 @@
 
 #include <linux/platform_data/i2c-s3c2410.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <linux/platform_data/mmc-s3cmci.h>
@@ -535,11 +534,16 @@ static void __init n30_map_io(void)
 {
 	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 	n30_hwinit();
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init n30_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 
 static void __init n30_init(void)
@@ -591,7 +595,7 @@ MACHINE_START(N30, "Acer-N30")
 				Ben Dooks <ben-linux@fluff.org>
 	*/
 	.atag_offset	= 0x100,
-	.init_time	= samsung_timer_init,
+	.init_time	= n30_init_time,
 	.init_machine	= n30_init,
 	.init_irq	= s3c2410_init_irq,
 	.map_io		= n30_map_io,
@@ -602,7 +606,7 @@ MACHINE_START(N35, "Acer-N35")
 	/* Maintainer: Christer Weinigel <christer@weinigel.se>
 	*/
 	.atag_offset	= 0x100,
-	.init_time	= samsung_timer_init,
+	.init_time	= n30_init_time,
 	.init_machine	= n30_init,
 	.init_irq	= s3c2410_init_irq,
 	.map_io		= n30_map_io,

arch/arm/mach-s3c24xx/mach-nexcoder.c

@@ -42,7 +42,6 @@
 #include <linux/platform_data/i2c-s3c2410.h>
 
 #include <plat/gpio-cfg.h>
-#include <plat/clock.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/samsung-time.h>
@@ -135,13 +134,18 @@ static void __init nexcoder_sensorboard_init(void)
 static void __init nexcoder_map_io(void)
 {
 	s3c24xx_init_io(nexcoder_iodesc, ARRAY_SIZE(nexcoder_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(nexcoder_uartcfgs, ARRAY_SIZE(nexcoder_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 
 	nexcoder_sensorboard_init();
 }
 
+static void __init nexcoder_init_time(void)
+{
+	s3c2440_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init nexcoder_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -154,6 +158,6 @@ MACHINE_START(NEXCODER_2440, "NexVision - Nexcoder 2440")
 	.map_io		= nexcoder_map_io,
 	.init_machine	= nexcoder_init,
 	.init_irq	= s3c2440_init_irq,
-	.init_time	= samsung_timer_init,
+	.init_time	= nexcoder_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-osiris.c

@@ -40,7 +40,6 @@
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/cpu-freq.h>
 #include <plat/devs.h>
@@ -344,20 +343,13 @@ static struct i2c_board_info osiris_i2c_devs[] __initdata = {
 /* Standard Osiris devices */
 
 static struct platform_device *osiris_devices[] __initdata = {
+	&s3c2410_device_dclk,
 	&s3c_device_i2c0,
 	&s3c_device_wdt,
 	&s3c_device_nand,
 	&osiris_pcmcia,
 };
 
-static struct clk *osiris_clocks[] __initdata = {
-	&s3c24xx_dclk0,
-	&s3c24xx_dclk1,
-	&s3c24xx_clkout0,
-	&s3c24xx_clkout1,
-	&s3c24xx_uclk,
-};
-
 static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
 	.refresh	= 7800, /* refresh period is 7.8usec */
 	.auto_io	= 1,
@@ -368,23 +360,7 @@ static void __init osiris_map_io(void)
 {
 	unsigned long flags;
 
-	/* initialise the clocks */
-
-	s3c24xx_dclk0.parent = &clk_upll;
-	s3c24xx_dclk0.rate   = 12*1000*1000;
-
-	s3c24xx_dclk1.parent = &clk_upll;
-	s3c24xx_dclk1.rate   = 24*1000*1000;
-
-	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
-	s3c24xx_clkout1.parent  = &s3c24xx_dclk1;
-
-	s3c24xx_uclk.parent  = &s3c24xx_clkout1;
-
-	s3c24xx_register_clocks(osiris_clocks, ARRAY_SIZE(osiris_clocks));
-
 	s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 
@@ -408,6 +384,12 @@ static void __init osiris_map_io(void)
 	local_irq_restore(flags);
 }
 
+static void __init osiris_init_time(void)
+{
+	s3c2440_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init osiris_init(void)
 {
 	register_syscore_ops(&osiris_pm_syscore_ops);
@@ -429,6 +411,6 @@ MACHINE_START(OSIRIS, "Simtec-OSIRIS")
 	.map_io		= osiris_map_io,
 	.init_irq	= s3c2440_init_irq,
 	.init_machine	= osiris_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= osiris_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-otom.c

@@ -30,7 +30,6 @@
 #include <mach/hardware.h>
 #include <mach/regs-gpio.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/samsung-time.h>
@@ -100,11 +99,16 @@ static struct platform_device *otom11_devices[] __initdata = {
 static void __init otom11_map_io(void)
 {
 	s3c24xx_init_io(otom11_iodesc, ARRAY_SIZE(otom11_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(otom11_uartcfgs, ARRAY_SIZE(otom11_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init otom11_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init otom11_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -117,6 +121,6 @@ MACHINE_START(OTOM, "Nex Vision - Otom 1.1")
 	.map_io		= otom11_map_io,
 	.init_machine	= otom11_init,
 	.init_irq	= s3c2410_init_irq,
-	.init_time	= samsung_timer_init,
+	.init_time	= otom11_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-qt2410.c

@@ -304,11 +304,16 @@ __setup("tft=", qt2410_tft_setup);
 static void __init qt2410_map_io(void)
 {
 	s3c24xx_init_io(qt2410_iodesc, ARRAY_SIZE(qt2410_iodesc));
-	s3c24xx_init_clocks(12*1000*1000);
 	s3c24xx_init_uarts(smdk2410_uartcfgs, ARRAY_SIZE(smdk2410_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init qt2410_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init qt2410_machine_init(void)
 {
 	s3c_nand_set_platdata(&qt2410_nand_info);
@@ -346,6 +351,6 @@ MACHINE_START(QT2410, "QT2410")
 	.map_io		= qt2410_map_io,
 	.init_irq	= s3c2410_init_irq,
 	.init_machine	= qt2410_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= qt2410_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-rx1950.c

@@ -54,7 +54,6 @@
 #include <mach/regs-lcd.h>
 #include <mach/gpio-samsung.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/pm.h>
@@ -710,6 +709,7 @@ static struct i2c_board_info rx1950_i2c_devices[] = {
 };
 
 static struct platform_device *rx1950_devices[] __initdata = {
+	&s3c2410_device_dclk,
 	&s3c_device_lcd,
 	&s3c_device_wdt,
 	&s3c_device_i2c0,
@@ -728,20 +728,9 @@ static struct platform_device *rx1950_devices[] __initdata = {
 	&rx1950_leds,
 };
 
-static struct clk *rx1950_clocks[] __initdata = {
-	&s3c24xx_clkout0,
-	&s3c24xx_clkout1,
-};
-
 static void __init rx1950_map_io(void)
 {
-	s3c24xx_clkout0.parent  = &clk_h;
-	s3c24xx_clkout1.parent  = &clk_f;
-
-	s3c24xx_register_clocks(rx1950_clocks, ARRAY_SIZE(rx1950_clocks));
-
 	s3c24xx_init_io(rx1950_iodesc, ARRAY_SIZE(rx1950_iodesc));
-	s3c24xx_init_clocks(16934000);
 	s3c24xx_init_uarts(rx1950_uartcfgs, ARRAY_SIZE(rx1950_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 
@@ -754,6 +743,12 @@ static void __init rx1950_map_io(void)
 	s3c_pm_init();
 }
 
+static void __init rx1950_init_time(void)
+{
+	s3c2442_init_clocks(16934000);
+	samsung_timer_init();
+}
+
 static void __init rx1950_init_machine(void)
 {
 	int i;
@@ -816,6 +811,6 @@ MACHINE_START(RX1950, "HP iPAQ RX1950")
 	.reserve	= rx1950_reserve,
 	.init_irq	= s3c2442_init_irq,
 	.init_machine = rx1950_init_machine,
-	.init_time	= samsung_timer_init,
+	.init_time	= rx1950_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-rx3715.c

@@ -46,7 +46,6 @@
 #include <mach/regs-lcd.h>
 #include <mach/gpio-samsung.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/pm.h>
@@ -179,11 +178,16 @@ static struct platform_device *rx3715_devices[] __initdata = {
 static void __init rx3715_map_io(void)
 {
 	s3c24xx_init_io(rx3715_iodesc, ARRAY_SIZE(rx3715_iodesc));
-	s3c24xx_init_clocks(16934000);
 	s3c24xx_init_uarts(rx3715_uartcfgs, ARRAY_SIZE(rx3715_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init rx3715_init_time(void)
+{
+	s3c2440_init_clocks(16934000);
+	samsung_timer_init();
+}
+
 /* H1940 and RX3715 need to reserve this for suspend */
 static void __init rx3715_reserve(void)
 {
@@ -210,6 +214,6 @@ MACHINE_START(RX3715, "IPAQ-RX3715")
 	.reserve	= rx3715_reserve,
 	.init_irq	= s3c2440_init_irq,
 	.init_machine	= rx3715_init_machine,
-	.init_time	= samsung_timer_init,
+	.init_time	= rx3715_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-s3c2416-dt.c

@@ -18,7 +18,6 @@
 #include <linux/clocksource.h>
 #include <linux/irqchip.h>
 #include <linux/of_platform.h>
-#include <linux/serial_core.h>
 #include <linux/serial_s3c.h>
 
 #include <asm/mach/arch.h>
@@ -29,48 +28,14 @@
 
 #include "common.h"
 
-/*
- * The following lookup table is used to override device names when devices
- * are registered from device tree. This is temporarily added to enable
- * device tree support addition for the S3C2416 architecture.
- *
- * For drivers that require platform data to be provided from the machine
- * file, a platform data pointer can also be supplied along with the
- * devices names. Usually, the platform data elements that cannot be parsed
- * from the device tree by the drivers (example: function pointers) are
- * supplied. But it should be noted that this is a temporary mechanism and
- * at some point, the drivers should be capable of parsing all the platform
- * data from the device tree.
- */
-static const struct of_dev_auxdata s3c2416_auxdata_lookup[] __initconst = {
-	OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART,
-				"s3c2440-uart.0", NULL),
-	OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0x4000,
-				"s3c2440-uart.1", NULL),
-	OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0x8000,
-				"s3c2440-uart.2", NULL),
-	OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0xC000,
-				"s3c2440-uart.3", NULL),
-	OF_DEV_AUXDATA("samsung,s3c6410-sdhci", S3C_PA_HSMMC0,
-				"s3c-sdhci.0", NULL),
-	OF_DEV_AUXDATA("samsung,s3c6410-sdhci", S3C_PA_HSMMC1,
-				"s3c-sdhci.1", NULL),
-	OF_DEV_AUXDATA("samsung,s3c2440-i2c", S3C_PA_IIC,
-				"s3c2440-i2c.0", NULL),
-	{},
-};
-
 static void __init s3c2416_dt_map_io(void)
 {
 	s3c24xx_init_io(NULL, 0);
-	s3c24xx_init_clocks(12000000);
 }
 
 static void __init s3c2416_dt_machine_init(void)
 {
-	of_platform_populate(NULL, of_default_bus_match_table,
-				s3c2416_auxdata_lookup, NULL);
-
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 	s3c_pm_init();
 }
 
@@ -86,6 +51,5 @@ DT_MACHINE_START(S3C2416_DT, "Samsung S3C2416 (Flattened Device Tree)")
 	.map_io		= s3c2416_dt_map_io,
 	.init_irq	= irqchip_init,
 	.init_machine	= s3c2416_dt_machine_init,
-	 .init_time	= clocksource_of_init,
 	.restart	= s3c2416_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-smdk2410.c

@@ -99,11 +99,16 @@ static struct platform_device *smdk2410_devices[] __initdata = {
 static void __init smdk2410_map_io(void)
 {
 	s3c24xx_init_io(smdk2410_iodesc, ARRAY_SIZE(smdk2410_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(smdk2410_uartcfgs, ARRAY_SIZE(smdk2410_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init smdk2410_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init smdk2410_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -118,6 +123,6 @@ MACHINE_START(SMDK2410, "SMDK2410") /* @TODO: request a new identifier and switc
 	.map_io		= smdk2410_map_io,
 	.init_irq	= s3c2410_init_irq,
 	.init_machine	= smdk2410_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= smdk2410_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-smdk2413.c

@@ -106,11 +106,16 @@ static void __init smdk2413_fixup(struct tag *tags, char **cmdline,
 static void __init smdk2413_map_io(void)
 {
 	s3c24xx_init_io(smdk2413_iodesc, ARRAY_SIZE(smdk2413_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(smdk2413_uartcfgs, ARRAY_SIZE(smdk2413_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init smdk2413_init_time(void)
+{
+	s3c2412_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init smdk2413_machine_init(void)
 {	/* Turn off suspend on both USB ports, and switch the
 	 * selectable USB port to USB device mode. */
@@ -159,6 +164,6 @@ MACHINE_START(SMDK2413, "SMDK2413")
 	.init_irq	= s3c2412_init_irq,
 	.map_io		= smdk2413_map_io,
 	.init_machine	= smdk2413_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= smdk2413_init_time,
 	.restart	= s3c2412_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-smdk2416.c

@@ -219,10 +219,15 @@ static struct platform_device *smdk2416_devices[] __initdata = {
 	&s3c2443_device_dma,
 };
 
+static void __init smdk2416_init_time(void)
+{
+	s3c2416_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init smdk2416_map_io(void)
 {
 	s3c24xx_init_io(smdk2416_iodesc, ARRAY_SIZE(smdk2416_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(smdk2416_uartcfgs, ARRAY_SIZE(smdk2416_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
@@ -257,6 +262,6 @@ MACHINE_START(SMDK2416, "SMDK2416")
 	.init_irq	= s3c2416_init_irq,
 	.map_io		= smdk2416_map_io,
 	.init_machine	= smdk2416_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= smdk2416_init_time,
 	.restart	= s3c2416_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-smdk2440.c

@@ -38,7 +38,6 @@
 #include <mach/fb.h>
 #include <linux/platform_data/i2c-s3c2410.h>
 
-#include <plat/clock.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/samsung-time.h>
@@ -159,11 +158,16 @@ static struct platform_device *smdk2440_devices[] __initdata = {
 static void __init smdk2440_map_io(void)
 {
 	s3c24xx_init_io(smdk2440_iodesc, ARRAY_SIZE(smdk2440_iodesc));
-	s3c24xx_init_clocks(16934400);
 	s3c24xx_init_uarts(smdk2440_uartcfgs, ARRAY_SIZE(smdk2440_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init smdk2440_init_time(void)
+{
+	s3c2440_init_clocks(16934400);
+	samsung_timer_init();
+}
+
 static void __init smdk2440_machine_init(void)
 {
 	s3c24xx_fb_set_platdata(&smdk2440_fb_info);
@@ -180,6 +184,6 @@ MACHINE_START(S3C2440, "SMDK2440")
 	.init_irq	= s3c2440_init_irq,
 	.map_io		= smdk2440_map_io,
 	.init_machine	= smdk2440_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= smdk2440_init_time,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-smdk2443.c

@@ -121,11 +121,16 @@ static struct platform_device *smdk2443_devices[] __initdata = {
 static void __init smdk2443_map_io(void)
 {
 	s3c24xx_init_io(smdk2443_iodesc, ARRAY_SIZE(smdk2443_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(smdk2443_uartcfgs, ARRAY_SIZE(smdk2443_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init smdk2443_init_time(void)
+{
+	s3c2443_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init smdk2443_machine_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -145,6 +150,6 @@ MACHINE_START(SMDK2443, "SMDK2443")
 	.init_irq	= s3c2443_init_irq,
 	.map_io		= smdk2443_map_io,
 	.init_machine	= smdk2443_machine_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= smdk2443_init_time,
 	.restart	= s3c2443_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-tct_hammer.c

@@ -135,11 +135,16 @@ static struct platform_device *tct_hammer_devices[] __initdata = {
 static void __init tct_hammer_map_io(void)
 {
 	s3c24xx_init_io(tct_hammer_iodesc, ARRAY_SIZE(tct_hammer_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(tct_hammer_uartcfgs, ARRAY_SIZE(tct_hammer_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init tct_hammer_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init tct_hammer_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -151,6 +156,6 @@ MACHINE_START(TCT_HAMMER, "TCT_HAMMER")
 	.map_io		= tct_hammer_map_io,
 	.init_irq	= s3c2410_init_irq,
 	.init_machine	= tct_hammer_init,
-	.init_time	= samsung_timer_init,
+	.init_time	= tct_hammer_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-vr1000.c

@@ -43,7 +43,6 @@
 #include <mach/regs-gpio.h>
 #include <mach/gpio-samsung.h>
 
-#include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/samsung-time.h>
@@ -286,6 +285,7 @@ static struct i2c_board_info vr1000_i2c_devs[] __initdata = {
 /* devices for this board */
 
 static struct platform_device *vr1000_devices[] __initdata = {
+	&s3c2410_device_dclk,
 	&s3c_device_ohci,
 	&s3c_device_lcd,
 	&s3c_device_wdt,
@@ -299,14 +299,6 @@ static struct platform_device *vr1000_devices[] __initdata = {
 	&vr1000_led3,
 };
 
-static struct clk *vr1000_clocks[] __initdata = {
-	&s3c24xx_dclk0,
-	&s3c24xx_dclk1,
-	&s3c24xx_clkout0,
-	&s3c24xx_clkout1,
-	&s3c24xx_uclk,
-};
-
 static void vr1000_power_off(void)
 {
 	gpio_direction_output(S3C2410_GPB(9), 1);
@@ -314,29 +306,19 @@ static void vr1000_power_off(void)
 
 static void __init vr1000_map_io(void)
 {
-	/* initialise clock sources */
-
-	s3c24xx_dclk0.parent = &clk_upll;
-	s3c24xx_dclk0.rate   = 12*1000*1000;
-
-	s3c24xx_dclk1.parent = NULL;
-	s3c24xx_dclk1.rate   = 3692307;
-
-	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
-	s3c24xx_clkout1.parent  = &s3c24xx_dclk1;
-
-	s3c24xx_uclk.parent  = &s3c24xx_clkout1;
-
-	s3c24xx_register_clocks(vr1000_clocks, ARRAY_SIZE(vr1000_clocks));
-
 	pm_power_off = vr1000_power_off;
 
 	s3c24xx_init_io(vr1000_iodesc, ARRAY_SIZE(vr1000_iodesc));
-	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(vr1000_uartcfgs, ARRAY_SIZE(vr1000_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init vr1000_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init vr1000_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -357,6 +339,6 @@ MACHINE_START(VR1000, "Thorcom-VR1000")
 	.map_io		= vr1000_map_io,
 	.init_machine	= vr1000_init,
 	.init_irq	= s3c2410_init_irq,
-	.init_time	= samsung_timer_init,
+	.init_time	= vr1000_init_time,
 	.restart	= s3c2410_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-vstms.c

@@ -142,11 +142,16 @@ static void __init vstms_fixup(struct tag *tags, char **cmdline,
 static void __init vstms_map_io(void)
 {
 	s3c24xx_init_io(vstms_iodesc, ARRAY_SIZE(vstms_iodesc));
-	s3c24xx_init_clocks(12000000);
 	s3c24xx_init_uarts(vstms_uartcfgs, ARRAY_SIZE(vstms_uartcfgs));
 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 }
 
+static void __init vstms_init_time(void)
+{
+	s3c2412_init_clocks(12000000);
+	samsung_timer_init();
+}
+
 static void __init vstms_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -162,6 +167,6 @@ MACHINE_START(VSTMS, "VSTMS")
 	.init_irq	= s3c2412_init_irq,
 	.init_machine	= vstms_init,
 	.map_io		= vstms_map_io,
-	.init_time	= samsung_timer_init,
+	.init_time	= vstms_init_time,
 	.restart	= s3c2412_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/pm.c

@@ -51,9 +51,6 @@
 #define PFX "s3c24xx-pm: "
 
 static struct sleep_save core_save[] = {
-	SAVE_ITEM(S3C2410_LOCKTIME),
-	SAVE_ITEM(S3C2410_CLKCON),
-
 	/* we restore the timings here, with the proviso that the board
 	 * brings the system up in an slower, or equal frequency setting
 	 * to the original system.
@@ -69,18 +66,6 @@ static struct sleep_save core_save[] = {
 	SAVE_ITEM(S3C2410_BANKCON3),
 	SAVE_ITEM(S3C2410_BANKCON4),
 	SAVE_ITEM(S3C2410_BANKCON5),
-
-#ifndef CONFIG_CPU_FREQ
-	SAVE_ITEM(S3C2410_CLKDIVN),
-	SAVE_ITEM(S3C2410_MPLLCON),
-	SAVE_ITEM(S3C2410_REFRESH),
-#endif
-	SAVE_ITEM(S3C2410_UPLLCON),
-	SAVE_ITEM(S3C2410_CLKSLOW),
-};
-
-static struct sleep_save misc_save[] = {
-	SAVE_ITEM(S3C2410_DCLKCON),
 };
 
 /* s3c_pm_check_resume_pin
@@ -140,12 +125,10 @@ void s3c_pm_configure_extint(void)
 void s3c_pm_restore_core(void)
 {
 	s3c_pm_do_restore_core(core_save, ARRAY_SIZE(core_save));
-	s3c_pm_do_restore(misc_save, ARRAY_SIZE(misc_save));
 }
 
 void s3c_pm_save_core(void)
 {
-	s3c_pm_do_save(misc_save, ARRAY_SIZE(misc_save));
 	s3c_pm_do_save(core_save, ARRAY_SIZE(core_save));
 }
 

arch/arm/mach-s3c24xx/s3c2410.c

@@ -85,62 +85,6 @@ void __init s3c2410_map_io(void)
 
 void __init_or_cpufreq s3c2410_setup_clocks(void)
 {
-	struct clk *xtal_clk;
-	unsigned long tmp;
-	unsigned long xtal;
-	unsigned long fclk;
-	unsigned long hclk;
-	unsigned long pclk;
-
-	xtal_clk = clk_get(NULL, "xtal");
-	xtal = clk_get_rate(xtal_clk);
-	clk_put(xtal_clk);
-
-	/* now we've got our machine bits initialised, work out what
-	 * clocks we've got */
-
-	fclk = s3c24xx_get_pll(__raw_readl(S3C2410_MPLLCON), xtal);
-
-	tmp = __raw_readl(S3C2410_CLKDIVN);
-
-	/* work out clock scalings */
-
-	hclk = fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
-	pclk = hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
-
-	/* print brieft summary of clocks, etc */
-
-	printk("S3C2410: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
-	       print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
-
-	/* initialise the clocks here, to allow other things like the
-	 * console to use them
-	 */
-
-	s3c24xx_setup_clocks(fclk, hclk, pclk);
-}
-
-/* fake ARMCLK for use with cpufreq, etc. */
-
-static struct clk s3c2410_armclk = {
-	.name	= "armclk",
-	.parent	= &clk_f,
-	.id	= -1,
-};
-
-static struct clk_lookup s3c2410_clk_lookup[] = {
-	CLKDEV_INIT(NULL, "clk_uart_baud0", &clk_p),
-	CLKDEV_INIT(NULL, "clk_uart_baud1", &s3c24xx_uclk),
-};
-
-void __init s3c2410_init_clocks(int xtal)
-{
-	s3c24xx_register_baseclocks(xtal);
-	s3c2410_setup_clocks();
-	s3c2410_baseclk_add();
-	s3c24xx_register_clock(&s3c2410_armclk);
-	clkdev_add_table(s3c2410_clk_lookup, ARRAY_SIZE(s3c2410_clk_lookup));
-	samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
 }
 
 struct bus_type s3c2410_subsys = {

arch/arm/mach-s3c24xx/s3c2412.c

@@ -173,49 +173,6 @@ void __init s3c2412_map_io(void)
 
 void __init_or_cpufreq s3c2412_setup_clocks(void)
 {
-	struct clk *xtal_clk;
-	unsigned long tmp;
-	unsigned long xtal;
-	unsigned long fclk;
-	unsigned long hclk;
-	unsigned long pclk;
-
-	xtal_clk = clk_get(NULL, "xtal");
-	xtal = clk_get_rate(xtal_clk);
-	clk_put(xtal_clk);
-
-	/* now we've got our machine bits initialised, work out what
-	 * clocks we've got */
-
-	fclk = s3c24xx_get_pll(__raw_readl(S3C2410_MPLLCON), xtal * 2);
-
-	clk_mpll.rate = fclk;
-
-	tmp = __raw_readl(S3C2410_CLKDIVN);
-
-	/* work out clock scalings */
-
-	hclk = fclk / ((tmp & S3C2412_CLKDIVN_HDIVN_MASK) + 1);
-	hclk /= ((tmp & S3C2412_CLKDIVN_ARMDIVN) ? 2 : 1);
-	pclk = hclk / ((tmp & S3C2412_CLKDIVN_PDIVN) ? 2 : 1);
-
-	/* print brieft summary of clocks, etc */
-
-	printk("S3C2412: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
-	       print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
-
-	s3c24xx_setup_clocks(fclk, hclk, pclk);
-}
-
-void __init s3c2412_init_clocks(int xtal)
-{
-	/* initialise the clocks here, to allow other things like the
-	 * console to use them
-	 */
-
-	s3c24xx_register_baseclocks(xtal);
-	s3c2412_setup_clocks();
-	s3c2412_baseclk_add();
 }
 
 /* need to register the subsystem before we actually register the device, and

arch/arm/mach-s3c24xx/s3c2442.c

@@ -53,117 +53,6 @@
 
 #include "common.h"
 
-/* S3C2442 extended clock support */
-
-static unsigned long s3c2442_camif_upll_round(struct clk *clk,
-					      unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	int div;
-
-	if (rate > parent_rate)
-		return parent_rate;
-
-	div = parent_rate / rate;
-
-	if (div == 3)
-		return parent_rate / 3;
-
-	/* note, we remove the +/- 1 calculations for the divisor */
-
-	div /= 2;
-
-	if (div < 1)
-		div = 1;
-	else if (div > 16)
-		div = 16;
-
-	return parent_rate / (div * 2);
-}
-
-static int s3c2442_camif_upll_setrate(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk_get_rate(clk->parent);
-	unsigned long camdivn =  __raw_readl(S3C2440_CAMDIVN);
-
-	rate = s3c2442_camif_upll_round(clk, rate);
-
-	camdivn &= ~S3C2442_CAMDIVN_CAMCLK_DIV3;
-
-	if (rate == parent_rate) {
-		camdivn &= ~S3C2440_CAMDIVN_CAMCLK_SEL;
-	} else if ((parent_rate / rate) == 3) {
-		camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
-		camdivn |= S3C2442_CAMDIVN_CAMCLK_DIV3;
-	} else {
-		camdivn &= ~S3C2440_CAMDIVN_CAMCLK_MASK;
-		camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
-		camdivn |= (((parent_rate / rate) / 2) - 1);
-	}
-
-	__raw_writel(camdivn, S3C2440_CAMDIVN);
-
-	return 0;
-}
-
-/* Extra S3C2442 clocks */
-
-static struct clk s3c2442_clk_cam = {
-	.name		= "camif",
-	.id		= -1,
-	.enable		= s3c2410_clkcon_enable,
-	.ctrlbit	= S3C2440_CLKCON_CAMERA,
-};
-
-static struct clk s3c2442_clk_cam_upll = {
-	.name		= "camif-upll",
-	.id		= -1,
-	.ops		= &(struct clk_ops) {
-		.set_rate	= s3c2442_camif_upll_setrate,
-		.round_rate	= s3c2442_camif_upll_round,
-	},
-};
-
-static int s3c2442_clk_add(struct device *dev, struct subsys_interface *sif)
-{
-	struct clk *clock_upll;
-	struct clk *clock_h;
-	struct clk *clock_p;
-
-	clock_p = clk_get(NULL, "pclk");
-	clock_h = clk_get(NULL, "hclk");
-	clock_upll = clk_get(NULL, "upll");
-
-	if (IS_ERR(clock_p) || IS_ERR(clock_h) || IS_ERR(clock_upll)) {
-		printk(KERN_ERR "S3C2442: Failed to get parent clocks\n");
-		return -EINVAL;
-	}
-
-	s3c2442_clk_cam.parent = clock_h;
-	s3c2442_clk_cam_upll.parent = clock_upll;
-
-	s3c24xx_register_clock(&s3c2442_clk_cam);
-	s3c24xx_register_clock(&s3c2442_clk_cam_upll);
-
-	clk_disable(&s3c2442_clk_cam);
-
-	return 0;
-}
-
-static struct subsys_interface s3c2442_clk_interface = {
-	.name		= "s3c2442_clk",
-	.subsys		= &s3c2442_subsys,
-	.add_dev	= s3c2442_clk_add,
-};
-
-static __init int s3c2442_clk_init(void)
-{
-	return subsys_interface_register(&s3c2442_clk_interface);
-}
-
-arch_initcall(s3c2442_clk_init);
-
-
 static struct device s3c2442_dev = {
 	.bus		= &s3c2442_subsys,
 };

arch/arm/mach-s3c24xx/s3c244x.c

@@ -46,6 +46,7 @@
 #include <plat/nand-core.h>
 #include <plat/watchdog-reset.h>
 
+#include "common.h"
 #include "regs-dsc.h"
 
 static struct map_desc s3c244x_iodesc[] __initdata = {
@@ -74,67 +75,11 @@ void __init s3c244x_map_io(void)
 	s3c_nand_setname("s3c2440-nand");
 	s3c_device_ts.name = "s3c2440-ts";
 	s3c_device_usbgadget.name = "s3c2440-usbgadget";
+	s3c2410_device_dclk.name = "s3c2440-dclk";
 }
 
 void __init_or_cpufreq s3c244x_setup_clocks(void)
 {
-	struct clk *xtal_clk;
-	unsigned long clkdiv;
-	unsigned long camdiv;
-	unsigned long xtal;
-	unsigned long hclk, fclk, pclk;
-	int hdiv = 1;
-
-	xtal_clk = clk_get(NULL, "xtal");
-	xtal = clk_get_rate(xtal_clk);
-	clk_put(xtal_clk);
-
-	fclk = s3c24xx_get_pll(__raw_readl(S3C2410_MPLLCON), xtal) * 2;
-
-	clkdiv = __raw_readl(S3C2410_CLKDIVN);
-	camdiv = __raw_readl(S3C2440_CAMDIVN);
-
-	/* work out clock scalings */
-
-	switch (clkdiv & S3C2440_CLKDIVN_HDIVN_MASK) {
-	case S3C2440_CLKDIVN_HDIVN_1:
-		hdiv = 1;
-		break;
-
-	case S3C2440_CLKDIVN_HDIVN_2:
-		hdiv = 2;
-		break;
-
-	case S3C2440_CLKDIVN_HDIVN_4_8:
-		hdiv = (camdiv & S3C2440_CAMDIVN_HCLK4_HALF) ? 8 : 4;
-		break;
-
-	case S3C2440_CLKDIVN_HDIVN_3_6:
-		hdiv = (camdiv & S3C2440_CAMDIVN_HCLK3_HALF) ? 6 : 3;
-		break;
-	}
-
-	hclk = fclk / hdiv;
-	pclk = hclk / ((clkdiv & S3C2440_CLKDIVN_PDIVN) ? 2 : 1);
-
-	/* print brief summary of clocks, etc */
-
-	printk("S3C244X: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
-	       print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
-
-	s3c24xx_setup_clocks(fclk, hclk, pclk);
-}
-
-void __init s3c244x_init_clocks(int xtal)
-{
-	/* initialise the clocks here, to allow other things like the
-	 * console to use them, and to add new ones after the initialisation
-	 */
-
-	s3c24xx_register_baseclocks(xtal);
-	s3c244x_setup_clocks();
-	s3c2410_baseclk_add();
-	samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
 }
 
 /* Since the S3C2442 and S3C2440 share items, put both subsystems here */

arch/arm/plat-samsung/include/plat/cpu-freq-core.h

@@ -119,6 +119,7 @@ struct s3c_plltab {
 struct s3c_cpufreq_config {
 	struct s3c_freq		freq;
 	struct s3c_freq		max;
+	struct clk		*mpll;
 	struct cpufreq_frequency_table pll;
 	struct s3c_clkdivs	divs;
 	struct s3c_cpufreq_info *info;	/* for core, not drivers */

drivers/clk/samsung/Makefile

@@ -8,4 +8,8 @@ obj-$(CONFIG_SOC_EXYNOS5250)	+= clk-exynos5250.o
 obj-$(CONFIG_SOC_EXYNOS5420)	+= clk-exynos5420.o
 obj-$(CONFIG_SOC_EXYNOS5440)	+= clk-exynos5440.o
 obj-$(CONFIG_ARCH_EXYNOS)	+= clk-exynos-audss.o
+obj-$(CONFIG_S3C2410_COMMON_CLK)+= clk-s3c2410.o
+obj-$(CONFIG_S3C2410_COMMON_DCLK)+= clk-s3c2410-dclk.o
+obj-$(CONFIG_S3C2412_COMMON_CLK)+= clk-s3c2412.o
+obj-$(CONFIG_S3C2443_COMMON_CLK)+= clk-s3c2443.o
 obj-$(CONFIG_ARCH_S3C64XX)	+= clk-s3c64xx.o

drivers/clk/samsung/clk-pll.c

@@ -11,6 +11,7 @@
 
 #include <linux/errno.h>
 #include <linux/hrtimer.h>
+#include <linux/delay.h>
 #include "clk.h"
 #include "clk-pll.h"
 
@@ -58,6 +59,72 @@ static long samsung_pll_round_rate(struct clk_hw *hw,
 	return rate_table[i - 1].rate;
 }
 
+/*
+ * PLL2126 Clock Type
+ */
+
+#define PLL2126_MDIV_MASK	(0xff)
+#define PLL2126_PDIV_MASK	(0x3f)
+#define PLL2126_SDIV_MASK	(0x3)
+#define PLL2126_MDIV_SHIFT	(16)
+#define PLL2126_PDIV_SHIFT	(8)
+#define PLL2126_SDIV_SHIFT	(0)
+
+static unsigned long samsung_pll2126_recalc_rate(struct clk_hw *hw,
+				unsigned long parent_rate)
+{
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
+	u32 pll_con, mdiv, pdiv, sdiv;
+	u64 fvco = parent_rate;
+
+	pll_con = __raw_readl(pll->con_reg);
+	mdiv = (pll_con >> PLL2126_MDIV_SHIFT) & PLL2126_MDIV_MASK;
+	pdiv = (pll_con >> PLL2126_PDIV_SHIFT) & PLL2126_PDIV_MASK;
+	sdiv = (pll_con >> PLL2126_SDIV_SHIFT) & PLL2126_SDIV_MASK;
+
+	fvco *= (mdiv + 8);
+	do_div(fvco, (pdiv + 2) << sdiv);
+
+	return (unsigned long)fvco;
+}
+
+static const struct clk_ops samsung_pll2126_clk_ops = {
+	.recalc_rate = samsung_pll2126_recalc_rate,
+};
+
+/*
+ * PLL3000 Clock Type
+ */
+
+#define PLL3000_MDIV_MASK	(0xff)
+#define PLL3000_PDIV_MASK	(0x3)
+#define PLL3000_SDIV_MASK	(0x3)
+#define PLL3000_MDIV_SHIFT	(16)
+#define PLL3000_PDIV_SHIFT	(8)
+#define PLL3000_SDIV_SHIFT	(0)
+
+static unsigned long samsung_pll3000_recalc_rate(struct clk_hw *hw,
+				unsigned long parent_rate)
+{
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
+	u32 pll_con, mdiv, pdiv, sdiv;
+	u64 fvco = parent_rate;
+
+	pll_con = __raw_readl(pll->con_reg);
+	mdiv = (pll_con >> PLL3000_MDIV_SHIFT) & PLL3000_MDIV_MASK;
+	pdiv = (pll_con >> PLL3000_PDIV_SHIFT) & PLL3000_PDIV_MASK;
+	sdiv = (pll_con >> PLL3000_SDIV_SHIFT) & PLL3000_SDIV_MASK;
+
+	fvco *= (2 * (mdiv + 8));
+	do_div(fvco, pdiv << sdiv);
+
+	return (unsigned long)fvco;
+}
+
+static const struct clk_ops samsung_pll3000_clk_ops = {
+	.recalc_rate = samsung_pll3000_recalc_rate,
+};
+
 /*
  * PLL35xx Clock Type
  */
@@ -564,7 +631,9 @@ static const struct clk_ops samsung_pll46xx_clk_min_ops = {
 #define PLL6552_PDIV_MASK	0x3f
 #define PLL6552_SDIV_MASK	0x7
 #define PLL6552_MDIV_SHIFT	16
+#define PLL6552_MDIV_SHIFT_2416	14
 #define PLL6552_PDIV_SHIFT	8
+#define PLL6552_PDIV_SHIFT_2416	5
 #define PLL6552_SDIV_SHIFT	0
 
 static unsigned long samsung_pll6552_recalc_rate(struct clk_hw *hw,
@@ -575,8 +644,13 @@ static unsigned long samsung_pll6552_recalc_rate(struct clk_hw *hw,
 	u64 fvco = parent_rate;
 
 	pll_con = __raw_readl(pll->con_reg);
-	mdiv = (pll_con >> PLL6552_MDIV_SHIFT) & PLL6552_MDIV_MASK;
-	pdiv = (pll_con >> PLL6552_PDIV_SHIFT) & PLL6552_PDIV_MASK;
+	if (pll->type == pll_6552_s3c2416) {
+		mdiv = (pll_con >> PLL6552_MDIV_SHIFT_2416) & PLL6552_MDIV_MASK;
+		pdiv = (pll_con >> PLL6552_PDIV_SHIFT_2416) & PLL6552_PDIV_MASK;
+	} else {
+		mdiv = (pll_con >> PLL6552_MDIV_SHIFT) & PLL6552_MDIV_MASK;
+		pdiv = (pll_con >> PLL6552_PDIV_SHIFT) & PLL6552_PDIV_MASK;
+	}
 	sdiv = (pll_con >> PLL6552_SDIV_SHIFT) & PLL6552_SDIV_MASK;
 
 	fvco *= mdiv;
@@ -627,6 +701,169 @@ static const struct clk_ops samsung_pll6553_clk_ops = {
 	.recalc_rate = samsung_pll6553_recalc_rate,
 };
 
+/*
+ * PLL Clock Type of S3C24XX before S3C2443
+ */
+
+#define PLLS3C2410_MDIV_MASK		(0xff)
+#define PLLS3C2410_PDIV_MASK		(0x1f)
+#define PLLS3C2410_SDIV_MASK		(0x3)
+#define PLLS3C2410_MDIV_SHIFT		(12)
+#define PLLS3C2410_PDIV_SHIFT		(4)
+#define PLLS3C2410_SDIV_SHIFT		(0)
+
+#define PLLS3C2410_ENABLE_REG_OFFSET	0x10
+
+static unsigned long samsung_s3c2410_pll_recalc_rate(struct clk_hw *hw,
+					unsigned long parent_rate)
+{
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
+	u32 pll_con, mdiv, pdiv, sdiv;
+	u64 fvco = parent_rate;
+
+	pll_con = __raw_readl(pll->con_reg);
+	mdiv = (pll_con >> PLLS3C2410_MDIV_SHIFT) & PLLS3C2410_MDIV_MASK;
+	pdiv = (pll_con >> PLLS3C2410_PDIV_SHIFT) & PLLS3C2410_PDIV_MASK;
+	sdiv = (pll_con >> PLLS3C2410_SDIV_SHIFT) & PLLS3C2410_SDIV_MASK;
+
+	fvco *= (mdiv + 8);
+	do_div(fvco, (pdiv + 2) << sdiv);
+
+	return (unsigned int)fvco;
+}
+
+static unsigned long samsung_s3c2440_mpll_recalc_rate(struct clk_hw *hw,
+					unsigned long parent_rate)
+{
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
+	u32 pll_con, mdiv, pdiv, sdiv;
+	u64 fvco = parent_rate;
+
+	pll_con = __raw_readl(pll->con_reg);
+	mdiv = (pll_con >> PLLS3C2410_MDIV_SHIFT) & PLLS3C2410_MDIV_MASK;
+	pdiv = (pll_con >> PLLS3C2410_PDIV_SHIFT) & PLLS3C2410_PDIV_MASK;
+	sdiv = (pll_con >> PLLS3C2410_SDIV_SHIFT) & PLLS3C2410_SDIV_MASK;
+
+	fvco *= (2 * (mdiv + 8));
+	do_div(fvco, (pdiv + 2) << sdiv);
+
+	return (unsigned int)fvco;
+}
+
+static int samsung_s3c2410_pll_set_rate(struct clk_hw *hw, unsigned long drate,
+					unsigned long prate)
+{
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
+	const struct samsung_pll_rate_table *rate;
+	u32 tmp;
+
+	/* Get required rate settings from table */
+	rate = samsung_get_pll_settings(pll, drate);
+	if (!rate) {
+		pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
+			drate, __clk_get_name(hw->clk));
+		return -EINVAL;
+	}
+
+	tmp = __raw_readl(pll->con_reg);
+
+	/* Change PLL PMS values */
+	tmp &= ~((PLLS3C2410_MDIV_MASK << PLLS3C2410_MDIV_SHIFT) |
+			(PLLS3C2410_PDIV_MASK << PLLS3C2410_PDIV_SHIFT) |
+			(PLLS3C2410_SDIV_MASK << PLLS3C2410_SDIV_SHIFT));
+	tmp |= (rate->mdiv << PLLS3C2410_MDIV_SHIFT) |
+			(rate->pdiv << PLLS3C2410_PDIV_SHIFT) |
+			(rate->sdiv << PLLS3C2410_SDIV_SHIFT);
+	__raw_writel(tmp, pll->con_reg);
+
+	/* Time to settle according to the manual */
+	udelay(300);
+
+	return 0;
+}
+
+static int samsung_s3c2410_pll_enable(struct clk_hw *hw, int bit, bool enable)
+{
+	struct samsung_clk_pll *pll = to_clk_pll(hw);
+	u32 pll_en = __raw_readl(pll->lock_reg + PLLS3C2410_ENABLE_REG_OFFSET);
+	u32 pll_en_orig = pll_en;
+
+	if (enable)
+		pll_en &= ~BIT(bit);
+	else
+		pll_en |= BIT(bit);
+
+	__raw_writel(pll_en, pll->lock_reg + PLLS3C2410_ENABLE_REG_OFFSET);
+
+	/* if we started the UPLL, then allow to settle */
+	if (enable && (pll_en_orig & BIT(bit)))
+		udelay(300);
+
+	return 0;
+}
+
+static int samsung_s3c2410_mpll_enable(struct clk_hw *hw)
+{
+	return samsung_s3c2410_pll_enable(hw, 5, true);
+}
+
+static void samsung_s3c2410_mpll_disable(struct clk_hw *hw)
+{
+	samsung_s3c2410_pll_enable(hw, 5, false);
+}
+
+static int samsung_s3c2410_upll_enable(struct clk_hw *hw)
+{
+	return samsung_s3c2410_pll_enable(hw, 7, true);
+}
+
+static void samsung_s3c2410_upll_disable(struct clk_hw *hw)
+{
+	samsung_s3c2410_pll_enable(hw, 7, false);
+}
+
+static const struct clk_ops samsung_s3c2410_mpll_clk_min_ops = {
+	.recalc_rate = samsung_s3c2410_pll_recalc_rate,
+	.enable = samsung_s3c2410_mpll_enable,
+	.disable = samsung_s3c2410_mpll_disable,
+};
+
+static const struct clk_ops samsung_s3c2410_upll_clk_min_ops = {
+	.recalc_rate = samsung_s3c2410_pll_recalc_rate,
+	.enable = samsung_s3c2410_upll_enable,
+	.disable = samsung_s3c2410_upll_disable,
+};
+
+static const struct clk_ops samsung_s3c2440_mpll_clk_min_ops = {
+	.recalc_rate = samsung_s3c2440_mpll_recalc_rate,
+	.enable = samsung_s3c2410_mpll_enable,
+	.disable = samsung_s3c2410_mpll_disable,
+};
+
+static const struct clk_ops samsung_s3c2410_mpll_clk_ops = {
+	.recalc_rate = samsung_s3c2410_pll_recalc_rate,
+	.enable = samsung_s3c2410_mpll_enable,
+	.disable = samsung_s3c2410_mpll_disable,
+	.round_rate = samsung_pll_round_rate,
+	.set_rate = samsung_s3c2410_pll_set_rate,
+};
+
+static const struct clk_ops samsung_s3c2410_upll_clk_ops = {
+	.recalc_rate = samsung_s3c2410_pll_recalc_rate,
+	.enable = samsung_s3c2410_upll_enable,
+	.disable = samsung_s3c2410_upll_disable,
+	.round_rate = samsung_pll_round_rate,
+	.set_rate = samsung_s3c2410_pll_set_rate,
+};
+
+static const struct clk_ops samsung_s3c2440_mpll_clk_ops = {
+	.recalc_rate = samsung_s3c2440_mpll_recalc_rate,
+	.enable = samsung_s3c2410_mpll_enable,
+	.disable = samsung_s3c2410_mpll_disable,
+	.round_rate = samsung_pll_round_rate,
+	.set_rate = samsung_s3c2410_pll_set_rate,
+};
+
 /*
  * PLL2550x Clock Type
  */
@@ -746,6 +983,12 @@ static void __init _samsung_clk_register_pll(struct samsung_pll_clock *pll_clk,
 	}
 
 	switch (pll_clk->type) {
+	case pll_2126:
+		init.ops = &samsung_pll2126_clk_ops;
+		break;
+	case pll_3000:
+		init.ops = &samsung_pll3000_clk_ops;
+		break;
 	/* clk_ops for 35xx and 2550 are similar */
 	case pll_35xx:
 	case pll_2550:
@@ -773,6 +1016,7 @@ static void __init _samsung_clk_register_pll(struct samsung_pll_clock *pll_clk,
 			init.ops = &samsung_pll36xx_clk_ops;
 		break;
 	case pll_6552:
+	case pll_6552_s3c2416:
 		init.ops = &samsung_pll6552_clk_ops;
 		break;
 	case pll_6553:
@@ -786,6 +1030,24 @@ static void __init _samsung_clk_register_pll(struct samsung_pll_clock *pll_clk,
 		else
 			init.ops = &samsung_pll46xx_clk_ops;
 		break;
+	case pll_s3c2410_mpll:
+		if (!pll->rate_table)
+			init.ops = &samsung_s3c2410_mpll_clk_min_ops;
+		else
+			init.ops = &samsung_s3c2410_mpll_clk_ops;
+		break;
+	case pll_s3c2410_upll:
+		if (!pll->rate_table)
+			init.ops = &samsung_s3c2410_upll_clk_min_ops;
+		else
+			init.ops = &samsung_s3c2410_upll_clk_ops;
+		break;
+	case pll_s3c2440_mpll:
+		if (!pll->rate_table)
+			init.ops = &samsung_s3c2440_mpll_clk_min_ops;
+		else
+			init.ops = &samsung_s3c2440_mpll_clk_ops;
+		break;
 	default:
 		pr_warn("%s: Unknown pll type for pll clk %s\n",
 			__func__, pll_clk->name);

drivers/clk/samsung/clk-pll.h

@@ -13,6 +13,8 @@
 #define __SAMSUNG_CLK_PLL_H
 
 enum samsung_pll_type {
+	pll_2126,
+	pll_3000,
 	pll_35xx,
 	pll_36xx,
 	pll_2550,
@@ -24,7 +26,11 @@ enum samsung_pll_type {
 	pll_4650,
 	pll_4650c,
 	pll_6552,
+	pll_6552_s3c2416,
 	pll_6553,
+	pll_s3c2410_mpll,
+	pll_s3c2410_upll,
+	pll_s3c2440_mpll,
 };
 
 #define PLL_35XX_RATE(_rate, _m, _p, _s)			\

drivers/clk/samsung/clk-s3c2410-dclk.c

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Common Clock Framework support for s3c24xx external clock output.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include "clk.h"
+
+/* legacy access to misccr, until dt conversion is finished */
+#include <mach/hardware.h>
+#include <mach/regs-gpio.h>
+
+#define MUX_DCLK0	0
+#define MUX_DCLK1	1
+#define DIV_DCLK0	2
+#define DIV_DCLK1	3
+#define GATE_DCLK0	4
+#define GATE_DCLK1	5
+#define MUX_CLKOUT0	6
+#define MUX_CLKOUT1	7
+#define DCLK_MAX_CLKS	(MUX_CLKOUT1 + 1)
+
+enum supported_socs {
+	S3C2410,
+	S3C2412,
+	S3C2440,
+	S3C2443,
+};
+
+struct s3c24xx_dclk_drv_data {
+	const char **clkout0_parent_names;
+	int clkout0_num_parents;
+	const char **clkout1_parent_names;
+	int clkout1_num_parents;
+	const char **mux_parent_names;
+	int mux_num_parents;
+};
+
+/*
+ * Clock for output-parent selection in misccr
+ */
+
+struct s3c24xx_clkout {
+	struct clk_hw		hw;
+	u32			mask;
+	u8			shift;
+};
+
+#define to_s3c24xx_clkout(_hw) container_of(_hw, struct s3c24xx_clkout, hw)
+
+static u8 s3c24xx_clkout_get_parent(struct clk_hw *hw)
+{
+	struct s3c24xx_clkout *clkout = to_s3c24xx_clkout(hw);
+	int num_parents = __clk_get_num_parents(hw->clk);
+	u32 val;
+
+	val = readl_relaxed(S3C24XX_MISCCR) >> clkout->shift;
+	val >>= clkout->shift;
+	val &= clkout->mask;
+
+	if (val >= num_parents)
+		return -EINVAL;
+
+	return val;
+}
+
+static int s3c24xx_clkout_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct s3c24xx_clkout *clkout = to_s3c24xx_clkout(hw);
+	int ret = 0;
+
+	s3c2410_modify_misccr((clkout->mask << clkout->shift),
+			      (index << clkout->shift));
+
+	return ret;
+}
+
+const struct clk_ops s3c24xx_clkout_ops = {
+	.get_parent = s3c24xx_clkout_get_parent,
+	.set_parent = s3c24xx_clkout_set_parent,
+	.determine_rate = __clk_mux_determine_rate,
+};
+
+struct clk *s3c24xx_register_clkout(struct device *dev, const char *name,
+		const char **parent_names, u8 num_parents,
+		u8 shift, u32 mask)
+{
+	struct s3c24xx_clkout *clkout;
+	struct clk *clk;
+	struct clk_init_data init;
+
+	/* allocate the clkout */
+	clkout = kzalloc(sizeof(*clkout), GFP_KERNEL);
+	if (!clkout)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &s3c24xx_clkout_ops;
+	init.flags = CLK_IS_BASIC;
+	init.parent_names = parent_names;
+	init.num_parents = num_parents;
+
+	clkout->shift = shift;
+	clkout->mask = mask;
+	clkout->hw.init = &init;
+
+	clk = clk_register(dev, &clkout->hw);
+
+	return clk;
+}
+
+/*
+ * dclk and clkout init
+ */
+
+struct s3c24xx_dclk {
+	struct device *dev;
+	void __iomem *base;
+	struct clk_onecell_data clk_data;
+	struct notifier_block dclk0_div_change_nb;
+	struct notifier_block dclk1_div_change_nb;
+	spinlock_t dclk_lock;
+	unsigned long reg_save;
+};
+
+#define to_s3c24xx_dclk0(x) \
+		container_of(x, struct s3c24xx_dclk, dclk0_div_change_nb)
+
+#define to_s3c24xx_dclk1(x) \
+		container_of(x, struct s3c24xx_dclk, dclk1_div_change_nb)
+
+PNAME(dclk_s3c2410_p) = { "pclk", "uclk" };
+PNAME(clkout0_s3c2410_p) = { "mpll", "upll", "fclk", "hclk", "pclk",
+			     "gate_dclk0" };
+PNAME(clkout1_s3c2410_p) = { "mpll", "upll", "fclk", "hclk", "pclk",
+			     "gate_dclk1" };
+
+PNAME(clkout0_s3c2412_p) = { "mpll", "upll", "rtc_clkout",
+			     "hclk", "pclk", "gate_dclk0" };
+PNAME(clkout1_s3c2412_p) = { "xti", "upll", "fclk", "hclk", "pclk",
+			     "gate_dclk1" };
+
+PNAME(clkout0_s3c2440_p) = { "xti", "upll", "fclk", "hclk", "pclk",
+			     "gate_dclk0" };
+PNAME(clkout1_s3c2440_p) = { "mpll", "upll", "rtc_clkout",
+			     "hclk", "pclk", "gate_dclk1" };
+
+PNAME(dclk_s3c2443_p) = { "pclk", "epll" };
+PNAME(clkout0_s3c2443_p) = { "xti", "epll", "armclk", "hclk", "pclk",
+			     "gate_dclk0" };
+PNAME(clkout1_s3c2443_p) = { "dummy", "epll", "rtc_clkout",
+			     "hclk", "pclk", "gate_dclk1" };
+
+#define DCLKCON_DCLK_DIV_MASK		0xf
+#define DCLKCON_DCLK0_DIV_SHIFT		4
+#define DCLKCON_DCLK0_CMP_SHIFT		8
+#define DCLKCON_DCLK1_DIV_SHIFT		20
+#define DCLKCON_DCLK1_CMP_SHIFT		24
+
+static void s3c24xx_dclk_update_cmp(struct s3c24xx_dclk *s3c24xx_dclk,
+				    int div_shift, int cmp_shift)
+{
+	unsigned long flags = 0;
+	u32 dclk_con, div, cmp;
+
+	spin_lock_irqsave(&s3c24xx_dclk->dclk_lock, flags);
+
+	dclk_con = readl_relaxed(s3c24xx_dclk->base);
+
+	div = ((dclk_con >> div_shift) & DCLKCON_DCLK_DIV_MASK) + 1;
+	cmp = ((div + 1) / 2) - 1;
+
+	dclk_con &= ~(DCLKCON_DCLK_DIV_MASK << cmp_shift);
+	dclk_con |= (cmp << cmp_shift);
+
+	writel_relaxed(dclk_con, s3c24xx_dclk->base);
+
+	spin_unlock_irqrestore(&s3c24xx_dclk->dclk_lock, flags);
+}
+
+static int s3c24xx_dclk0_div_notify(struct notifier_block *nb,
+			       unsigned long event, void *data)
+{
+	struct s3c24xx_dclk *s3c24xx_dclk = to_s3c24xx_dclk0(nb);
+
+	if (event == POST_RATE_CHANGE) {
+		s3c24xx_dclk_update_cmp(s3c24xx_dclk,
+			DCLKCON_DCLK0_DIV_SHIFT, DCLKCON_DCLK0_CMP_SHIFT);
+	}
+
+	return NOTIFY_DONE;
+}
+
+static int s3c24xx_dclk1_div_notify(struct notifier_block *nb,
+			       unsigned long event, void *data)
+{
+	struct s3c24xx_dclk *s3c24xx_dclk = to_s3c24xx_dclk1(nb);
+
+	if (event == POST_RATE_CHANGE) {
+		s3c24xx_dclk_update_cmp(s3c24xx_dclk,
+			DCLKCON_DCLK1_DIV_SHIFT, DCLKCON_DCLK1_CMP_SHIFT);
+	}
+
+	return NOTIFY_DONE;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int s3c24xx_dclk_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct s3c24xx_dclk *s3c24xx_dclk = platform_get_drvdata(pdev);
+
+	s3c24xx_dclk->reg_save = readl_relaxed(s3c24xx_dclk->base);
+	return 0;
+}
+
+static int s3c24xx_dclk_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct s3c24xx_dclk *s3c24xx_dclk = platform_get_drvdata(pdev);
+
+	writel_relaxed(s3c24xx_dclk->reg_save, s3c24xx_dclk->base);
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(s3c24xx_dclk_pm_ops,
+			 s3c24xx_dclk_suspend, s3c24xx_dclk_resume);
+
+static int s3c24xx_dclk_probe(struct platform_device *pdev)
+{
+	struct s3c24xx_dclk *s3c24xx_dclk;
+	struct resource *mem;
+	struct clk **clk_table;
+	struct s3c24xx_dclk_drv_data *dclk_variant;
+	int ret, i;
+
+	s3c24xx_dclk = devm_kzalloc(&pdev->dev, sizeof(*s3c24xx_dclk),
+				    GFP_KERNEL);
+	if (!s3c24xx_dclk)
+		return -ENOMEM;
+
+	s3c24xx_dclk->dev = &pdev->dev;
+	platform_set_drvdata(pdev, s3c24xx_dclk);
+	spin_lock_init(&s3c24xx_dclk->dclk_lock);
+
+	clk_table = devm_kzalloc(&pdev->dev,
+				 sizeof(struct clk *) * DCLK_MAX_CLKS,
+				 GFP_KERNEL);
+	if (!clk_table)
+		return -ENOMEM;
+
+	s3c24xx_dclk->clk_data.clks = clk_table;
+	s3c24xx_dclk->clk_data.clk_num = DCLK_MAX_CLKS;
+
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	s3c24xx_dclk->base = devm_ioremap_resource(&pdev->dev, mem);
+	if (IS_ERR(s3c24xx_dclk->base))
+		return PTR_ERR(s3c24xx_dclk->base);
+
+	dclk_variant = (struct s3c24xx_dclk_drv_data *)
+				platform_get_device_id(pdev)->driver_data;
+
+
+	clk_table[MUX_DCLK0] = clk_register_mux(&pdev->dev, "mux_dclk0",
+				dclk_variant->mux_parent_names,
+				dclk_variant->mux_num_parents, 0,
+				s3c24xx_dclk->base, 1, 1, 0,
+				&s3c24xx_dclk->dclk_lock);
+	clk_table[MUX_DCLK1] = clk_register_mux(&pdev->dev, "mux_dclk1",
+				dclk_variant->mux_parent_names,
+				dclk_variant->mux_num_parents, 0,
+				s3c24xx_dclk->base, 17, 1, 0,
+				&s3c24xx_dclk->dclk_lock);
+
+	clk_table[DIV_DCLK0] = clk_register_divider(&pdev->dev, "div_dclk0",
+				"mux_dclk0", 0, s3c24xx_dclk->base,
+				4, 4, 0, &s3c24xx_dclk->dclk_lock);
+	clk_table[DIV_DCLK1] = clk_register_divider(&pdev->dev, "div_dclk1",
+				"mux_dclk1", 0, s3c24xx_dclk->base,
+				20, 4, 0, &s3c24xx_dclk->dclk_lock);
+
+	clk_table[GATE_DCLK0] = clk_register_gate(&pdev->dev, "gate_dclk0",
+				"div_dclk0", CLK_SET_RATE_PARENT,
+				s3c24xx_dclk->base, 0, 0,
+				&s3c24xx_dclk->dclk_lock);
+	clk_table[GATE_DCLK1] = clk_register_gate(&pdev->dev, "gate_dclk1",
+				"div_dclk1", CLK_SET_RATE_PARENT,
+				s3c24xx_dclk->base, 16, 0,
+				&s3c24xx_dclk->dclk_lock);
+
+	clk_table[MUX_CLKOUT0] = s3c24xx_register_clkout(&pdev->dev,
+				"clkout0", dclk_variant->clkout0_parent_names,
+				dclk_variant->clkout0_num_parents, 4, 7);
+	clk_table[MUX_CLKOUT1] = s3c24xx_register_clkout(&pdev->dev,
+				"clkout1", dclk_variant->clkout1_parent_names,
+				dclk_variant->clkout1_num_parents, 8, 7);
+
+	for (i = 0; i < DCLK_MAX_CLKS; i++)
+		if (IS_ERR(clk_table[i])) {
+			dev_err(&pdev->dev, "clock %d failed to register\n", i);
+			ret = PTR_ERR(clk_table[i]);
+			goto err_clk_register;
+		}
+
+	ret = clk_register_clkdev(clk_table[MUX_DCLK0], "dclk0", NULL);
+	if (!ret)
+		ret = clk_register_clkdev(clk_table[MUX_DCLK1], "dclk1", NULL);
+	if (!ret)
+		ret = clk_register_clkdev(clk_table[MUX_CLKOUT0],
+					  "clkout0", NULL);
+	if (!ret)
+		ret = clk_register_clkdev(clk_table[MUX_CLKOUT1],
+					  "clkout1", NULL);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register aliases, %d\n", ret);
+		goto err_clk_register;
+	}
+
+	s3c24xx_dclk->dclk0_div_change_nb.notifier_call =
+						s3c24xx_dclk0_div_notify;
+
+	s3c24xx_dclk->dclk1_div_change_nb.notifier_call =
+						s3c24xx_dclk1_div_notify;
+
+	ret = clk_notifier_register(clk_table[DIV_DCLK0],
+				    &s3c24xx_dclk->dclk0_div_change_nb);
+	if (ret)
+		goto err_clk_register;
+
+	ret = clk_notifier_register(clk_table[DIV_DCLK1],
+				    &s3c24xx_dclk->dclk1_div_change_nb);
+	if (ret)
+		goto err_dclk_notify;
+
+	return 0;
+
+err_dclk_notify:
+	clk_notifier_unregister(clk_table[DIV_DCLK0],
+				&s3c24xx_dclk->dclk0_div_change_nb);
+err_clk_register:
+	for (i = 0; i < DCLK_MAX_CLKS; i++)
+		if (clk_table[i] && !IS_ERR(clk_table[i]))
+			clk_unregister(clk_table[i]);
+
+	return ret;
+}
+
+static int s3c24xx_dclk_remove(struct platform_device *pdev)
+{
+	struct s3c24xx_dclk *s3c24xx_dclk = platform_get_drvdata(pdev);
+	struct clk **clk_table = s3c24xx_dclk->clk_data.clks;
+	int i;
+
+	clk_notifier_unregister(clk_table[DIV_DCLK1],
+				&s3c24xx_dclk->dclk1_div_change_nb);
+	clk_notifier_unregister(clk_table[DIV_DCLK0],
+				&s3c24xx_dclk->dclk0_div_change_nb);
+
+	for (i = 0; i < DCLK_MAX_CLKS; i++)
+		clk_unregister(clk_table[i]);
+
+	return 0;
+}
+
+static struct s3c24xx_dclk_drv_data dclk_variants[] = {
+	[S3C2410] = {
+		.clkout0_parent_names = clkout0_s3c2410_p,
+		.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2410_p),
+		.clkout1_parent_names = clkout1_s3c2410_p,
+		.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2410_p),
+		.mux_parent_names = dclk_s3c2410_p,
+		.mux_num_parents = ARRAY_SIZE(dclk_s3c2410_p),
+	},
+	[S3C2412] = {
+		.clkout0_parent_names = clkout0_s3c2412_p,
+		.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2412_p),
+		.clkout1_parent_names = clkout1_s3c2412_p,
+		.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2412_p),
+		.mux_parent_names = dclk_s3c2410_p,
+		.mux_num_parents = ARRAY_SIZE(dclk_s3c2410_p),
+	},
+	[S3C2440] = {
+		.clkout0_parent_names = clkout0_s3c2440_p,
+		.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2440_p),
+		.clkout1_parent_names = clkout1_s3c2440_p,
+		.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2440_p),
+		.mux_parent_names = dclk_s3c2410_p,
+		.mux_num_parents = ARRAY_SIZE(dclk_s3c2410_p),
+	},
+	[S3C2443] = {
+		.clkout0_parent_names = clkout0_s3c2443_p,
+		.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2443_p),
+		.clkout1_parent_names = clkout1_s3c2443_p,
+		.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2443_p),
+		.mux_parent_names = dclk_s3c2443_p,
+		.mux_num_parents = ARRAY_SIZE(dclk_s3c2443_p),
+	},
+};
+
+static struct platform_device_id s3c24xx_dclk_driver_ids[] = {
+	{
+		.name		= "s3c2410-dclk",
+		.driver_data	= (kernel_ulong_t)&dclk_variants[S3C2410],
+	}, {
+		.name		= "s3c2412-dclk",
+		.driver_data	= (kernel_ulong_t)&dclk_variants[S3C2412],
+	}, {
+		.name		= "s3c2440-dclk",
+		.driver_data	= (kernel_ulong_t)&dclk_variants[S3C2440],
+	}, {
+		.name		= "s3c2443-dclk",
+		.driver_data	= (kernel_ulong_t)&dclk_variants[S3C2443],
+	},
+	{ }
+};
+
+MODULE_DEVICE_TABLE(platform, s3c24xx_dclk_driver_ids);
+
+static struct platform_driver s3c24xx_dclk_driver = {
+	.driver = {
+		.name		= "s3c24xx-dclk",
+		.owner		= THIS_MODULE,
+		.pm		= &s3c24xx_dclk_pm_ops,
+	},
+	.probe = s3c24xx_dclk_probe,
+	.remove = s3c24xx_dclk_remove,
+	.id_table = s3c24xx_dclk_driver_ids,
+};
+module_platform_driver(s3c24xx_dclk_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
+MODULE_DESCRIPTION("Driver for the S3C24XX external clock outputs");

drivers/clk/samsung/clk-s3c2410.c

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Common Clock Framework support for S3C2410 and following SoCs.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#include <dt-bindings/clock/s3c2410.h>
+
+#include "clk.h"
+#include "clk-pll.h"
+
+#define LOCKTIME	0x00
+#define MPLLCON		0x04
+#define UPLLCON		0x08
+#define CLKCON		0x0c
+#define CLKSLOW		0x10
+#define CLKDIVN		0x14
+#define CAMDIVN		0x18
+
+/* the soc types */
+enum supported_socs {
+	S3C2410,
+	S3C2440,
+	S3C2442,
+};
+
+/* list of PLLs to be registered */
+enum s3c2410_plls {
+	mpll, upll,
+};
+
+static void __iomem *reg_base;
+
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *s3c2410_save;
+
+/*
+ * list of controller registers to be saved and restored during a
+ * suspend/resume cycle.
+ */
+static unsigned long s3c2410_clk_regs[] __initdata = {
+	LOCKTIME,
+	MPLLCON,
+	UPLLCON,
+	CLKCON,
+	CLKSLOW,
+	CLKDIVN,
+	CAMDIVN,
+};
+
+static int s3c2410_clk_suspend(void)
+{
+	samsung_clk_save(reg_base, s3c2410_save,
+				ARRAY_SIZE(s3c2410_clk_regs));
+
+	return 0;
+}
+
+static void s3c2410_clk_resume(void)
+{
+	samsung_clk_restore(reg_base, s3c2410_save,
+				ARRAY_SIZE(s3c2410_clk_regs));
+}
+
+static struct syscore_ops s3c2410_clk_syscore_ops = {
+	.suspend = s3c2410_clk_suspend,
+	.resume = s3c2410_clk_resume,
+};
+
+static void s3c2410_clk_sleep_init(void)
+{
+	s3c2410_save = samsung_clk_alloc_reg_dump(s3c2410_clk_regs,
+						ARRAY_SIZE(s3c2410_clk_regs));
+	if (!s3c2410_save) {
+		pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+			__func__);
+		return;
+	}
+
+	register_syscore_ops(&s3c2410_clk_syscore_ops);
+	return;
+}
+#else
+static void s3c2410_clk_sleep_init(void) {}
+#endif
+
+PNAME(fclk_p) = { "mpll", "div_slow" };
+
+struct samsung_mux_clock s3c2410_common_muxes[] __initdata = {
+	MUX(FCLK, "fclk", fclk_p, CLKSLOW, 4, 1),
+};
+
+static struct clk_div_table divslow_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 1, .div = 2 },
+	{ .val = 2, .div = 4 },
+	{ .val = 3, .div = 6 },
+	{ .val = 4, .div = 8 },
+	{ .val = 5, .div = 10 },
+	{ .val = 6, .div = 12 },
+	{ .val = 7, .div = 14 },
+	{ /* sentinel */ },
+};
+
+struct samsung_div_clock s3c2410_common_dividers[] __initdata = {
+	DIV_T(0, "div_slow", "xti", CLKSLOW, 0, 3, divslow_d),
+	DIV(PCLK, "pclk", "hclk", CLKDIVN, 0, 1),
+};
+
+struct samsung_gate_clock s3c2410_common_gates[] __initdata = {
+	GATE(PCLK_SPI, "spi", "pclk", CLKCON, 18, 0, 0),
+	GATE(PCLK_I2S, "i2s", "pclk", CLKCON, 17, 0, 0),
+	GATE(PCLK_I2C, "i2c", "pclk", CLKCON, 16, 0, 0),
+	GATE(PCLK_ADC, "adc", "pclk", CLKCON, 15, 0, 0),
+	GATE(PCLK_RTC, "rtc", "pclk", CLKCON, 14, 0, 0),
+	GATE(PCLK_GPIO, "gpio", "pclk", CLKCON, 13, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_UART2, "uart2", "pclk", CLKCON, 12, 0, 0),
+	GATE(PCLK_UART1, "uart1", "pclk", CLKCON, 11, 0, 0),
+	GATE(PCLK_UART0, "uart0", "pclk", CLKCON, 10, 0, 0),
+	GATE(PCLK_SDI, "sdi", "pclk", CLKCON, 9, 0, 0),
+	GATE(PCLK_PWM, "pwm", "pclk", CLKCON, 8, 0, 0),
+	GATE(HCLK_USBD, "usb-device", "hclk", CLKCON, 7, 0, 0),
+	GATE(HCLK_USBH, "usb-host", "hclk", CLKCON, 6, 0, 0),
+	GATE(HCLK_LCD, "lcd", "hclk", CLKCON, 5, 0, 0),
+	GATE(HCLK_NAND, "nand", "hclk", CLKCON, 4, 0, 0),
+};
+
+/* should be added _after_ the soc-specific clocks are created */
+struct samsung_clock_alias s3c2410_common_aliases[] __initdata = {
+	ALIAS(PCLK_I2C, "s3c2410-i2c.0", "i2c"),
+	ALIAS(PCLK_ADC, NULL, "adc"),
+	ALIAS(PCLK_RTC, NULL, "rtc"),
+	ALIAS(PCLK_PWM, NULL, "timers"),
+	ALIAS(HCLK_LCD, NULL, "lcd"),
+	ALIAS(HCLK_USBD, NULL, "usb-device"),
+	ALIAS(HCLK_USBH, NULL, "usb-host"),
+	ALIAS(UCLK, NULL, "usb-bus-host"),
+	ALIAS(UCLK, NULL, "usb-bus-gadget"),
+	ALIAS(ARMCLK, NULL, "armclk"),
+	ALIAS(UCLK, NULL, "uclk"),
+	ALIAS(HCLK, NULL, "hclk"),
+	ALIAS(MPLL, NULL, "mpll"),
+	ALIAS(FCLK, NULL, "fclk"),
+};
+
+/* S3C2410 specific clocks */
+
+static struct samsung_pll_rate_table pll_s3c2410_12mhz_tbl[] __initdata = {
+	/* sorted in descending order */
+	/* 2410A extras */
+	PLL_35XX_RATE(270000000, 127, 1, 1),
+	PLL_35XX_RATE(268000000, 126, 1, 1),
+	PLL_35XX_RATE(266000000, 125, 1, 1),
+	PLL_35XX_RATE(226000000, 105, 1, 1),
+	PLL_35XX_RATE(210000000, 132, 2, 1),
+	/* 2410 common */
+	PLL_35XX_RATE(203000000, 161, 3, 1),
+	PLL_35XX_RATE(192000000, 88, 1, 1),
+	PLL_35XX_RATE(186000000, 85, 1, 1),
+	PLL_35XX_RATE(180000000, 82, 1, 1),
+	PLL_35XX_RATE(170000000, 77, 1, 1),
+	PLL_35XX_RATE(158000000, 71, 1, 1),
+	PLL_35XX_RATE(152000000, 68, 1, 1),
+	PLL_35XX_RATE(147000000, 90, 2, 1),
+	PLL_35XX_RATE(135000000, 82, 2, 1),
+	PLL_35XX_RATE(124000000, 116, 1, 2),
+	PLL_35XX_RATE(118000000, 150, 2, 2),
+	PLL_35XX_RATE(113000000, 105, 1, 2),
+	PLL_35XX_RATE(101000000, 127, 2, 2),
+	PLL_35XX_RATE(90000000, 112, 2, 2),
+	PLL_35XX_RATE(85000000, 105, 2, 2),
+	PLL_35XX_RATE(79000000, 71, 1, 2),
+	PLL_35XX_RATE(68000000, 82, 2, 2),
+	PLL_35XX_RATE(56000000, 142, 2, 3),
+	PLL_35XX_RATE(48000000, 120, 2, 3),
+	PLL_35XX_RATE(51000000, 161, 3, 3),
+	PLL_35XX_RATE(45000000, 82, 1, 3),
+	PLL_35XX_RATE(34000000, 82, 2, 3),
+	{ /* sentinel */ },
+};
+
+static struct samsung_pll_clock s3c2410_plls[] __initdata = {
+	[mpll] = PLL(pll_s3c2410_mpll, MPLL, "mpll", "xti",
+						LOCKTIME, MPLLCON, NULL),
+	[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "xti",
+						LOCKTIME, UPLLCON, NULL),
+};
+
+struct samsung_div_clock s3c2410_dividers[] __initdata = {
+	DIV(HCLK, "hclk", "mpll", CLKDIVN, 1, 1),
+};
+
+struct samsung_fixed_factor_clock s3c2410_ffactor[] __initdata = {
+	/*
+	 * armclk is directly supplied by the fclk, without
+	 * switching possibility like on the s3c244x below.
+	 */
+	FFACTOR(ARMCLK, "armclk", "fclk", 1, 1, 0),
+
+	/* uclk is fed from the unmodified upll */
+	FFACTOR(UCLK, "uclk", "upll", 1, 1, 0),
+};
+
+struct samsung_clock_alias s3c2410_aliases[] __initdata = {
+	ALIAS(PCLK_UART0, "s3c2410-uart.0", "uart"),
+	ALIAS(PCLK_UART1, "s3c2410-uart.1", "uart"),
+	ALIAS(PCLK_UART2, "s3c2410-uart.2", "uart"),
+	ALIAS(PCLK_UART0, "s3c2410-uart.0", "clk_uart_baud0"),
+	ALIAS(PCLK_UART1, "s3c2410-uart.1", "clk_uart_baud0"),
+	ALIAS(PCLK_UART2, "s3c2410-uart.2", "clk_uart_baud0"),
+	ALIAS(UCLK, NULL, "clk_uart_baud1"),
+};
+
+/* S3C244x specific clocks */
+
+static struct samsung_pll_rate_table pll_s3c244x_12mhz_tbl[] __initdata = {
+	/* sorted in descending order */
+	PLL_35XX_RATE(400000000, 0x5c, 1, 1),
+	PLL_35XX_RATE(390000000, 0x7a, 2, 1),
+	PLL_35XX_RATE(380000000, 0x57, 1, 1),
+	PLL_35XX_RATE(370000000, 0xb1, 4, 1),
+	PLL_35XX_RATE(360000000, 0x70, 2, 1),
+	PLL_35XX_RATE(350000000, 0xa7, 4, 1),
+	PLL_35XX_RATE(340000000, 0x4d, 1, 1),
+	PLL_35XX_RATE(330000000, 0x66, 2, 1),
+	PLL_35XX_RATE(320000000, 0x98, 4, 1),
+	PLL_35XX_RATE(310000000, 0x93, 4, 1),
+	PLL_35XX_RATE(300000000, 0x75, 3, 1),
+	PLL_35XX_RATE(240000000, 0x70, 1, 2),
+	PLL_35XX_RATE(230000000, 0x6b, 1, 2),
+	PLL_35XX_RATE(220000000, 0x66, 1, 2),
+	PLL_35XX_RATE(210000000, 0x84, 2, 2),
+	PLL_35XX_RATE(200000000, 0x5c, 1, 2),
+	PLL_35XX_RATE(190000000, 0x57, 1, 2),
+	PLL_35XX_RATE(180000000, 0x70, 2, 2),
+	PLL_35XX_RATE(170000000, 0x4d, 1, 2),
+	PLL_35XX_RATE(160000000, 0x98, 4, 2),
+	PLL_35XX_RATE(150000000, 0x75, 3, 2),
+	PLL_35XX_RATE(120000000, 0x70, 1, 3),
+	PLL_35XX_RATE(110000000, 0x66, 1, 3),
+	PLL_35XX_RATE(100000000, 0x5c, 1, 3),
+	PLL_35XX_RATE(90000000, 0x70, 2, 3),
+	PLL_35XX_RATE(80000000, 0x98, 4, 3),
+	PLL_35XX_RATE(75000000, 0x75, 3, 3),
+	{ /* sentinel */ },
+};
+
+static struct samsung_pll_clock s3c244x_common_plls[] __initdata = {
+	[mpll] = PLL(pll_s3c2440_mpll, MPLL, "mpll", "xti",
+						LOCKTIME, MPLLCON, NULL),
+	[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "xti",
+						LOCKTIME, UPLLCON, NULL),
+};
+
+PNAME(hclk_p) = { "fclk", "div_hclk_2", "div_hclk_4", "div_hclk_3" };
+PNAME(armclk_p) = { "fclk", "hclk" };
+
+struct samsung_mux_clock s3c244x_common_muxes[] __initdata = {
+	MUX(HCLK, "hclk", hclk_p, CLKDIVN, 1, 2),
+	MUX(ARMCLK, "armclk", armclk_p, CAMDIVN, 12, 1),
+};
+
+struct samsung_fixed_factor_clock s3c244x_common_ffactor[] __initdata = {
+	FFACTOR(0, "div_hclk_2", "fclk", 1, 2, 0),
+	FFACTOR(0, "ff_cam", "div_cam", 2, 1, CLK_SET_RATE_PARENT),
+};
+
+static struct clk_div_table div_hclk_4_d[] = {
+	{ .val = 0, .div = 4 },
+	{ .val = 1, .div = 8 },
+	{ /* sentinel */ },
+};
+
+static struct clk_div_table div_hclk_3_d[] = {
+	{ .val = 0, .div = 3 },
+	{ .val = 1, .div = 6 },
+	{ /* sentinel */ },
+};
+
+struct samsung_div_clock s3c244x_common_dividers[] __initdata = {
+	DIV(UCLK, "uclk", "upll", CLKDIVN, 3, 1),
+	DIV(0, "div_hclk", "fclk", CLKDIVN, 1, 1),
+	DIV_T(0, "div_hclk_4", "fclk", CAMDIVN, 9, 1, div_hclk_4_d),
+	DIV_T(0, "div_hclk_3", "fclk", CAMDIVN, 8, 1, div_hclk_3_d),
+	DIV(0, "div_cam", "upll", CAMDIVN, 0, 3),
+};
+
+struct samsung_gate_clock s3c244x_common_gates[] __initdata = {
+	GATE(HCLK_CAM, "cam", "hclk", CLKCON, 19, 0, 0),
+};
+
+struct samsung_clock_alias s3c244x_common_aliases[] __initdata = {
+	ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
+	ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
+	ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
+	ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
+	ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
+	ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
+	ALIAS(HCLK_CAM, NULL, "camif"),
+	ALIAS(CAMIF, NULL, "camif-upll"),
+};
+
+/* S3C2440 specific clocks */
+
+PNAME(s3c2440_camif_p) = { "upll", "ff_cam" };
+
+struct samsung_mux_clock s3c2440_muxes[] __initdata = {
+	MUX(CAMIF, "camif", s3c2440_camif_p, CAMDIVN, 4, 1),
+};
+
+struct samsung_gate_clock s3c2440_gates[] __initdata = {
+	GATE(PCLK_AC97, "ac97", "pclk", CLKCON, 20, 0, 0),
+};
+
+/* S3C2442 specific clocks */
+
+struct samsung_fixed_factor_clock s3c2442_ffactor[] __initdata = {
+	FFACTOR(0, "upll_3", "upll", 1, 3, 0),
+};
+
+PNAME(s3c2442_camif_p) = { "upll", "ff_cam", "upll", "upll_3" };
+
+struct samsung_mux_clock s3c2442_muxes[] __initdata = {
+	MUX(CAMIF, "camif", s3c2442_camif_p, CAMDIVN, 4, 2),
+};
+
+/*
+ * fixed rate clocks generated outside the soc
+ * Only necessary until the devicetree-move is complete
+ */
+#define XTI	1
+struct samsung_fixed_rate_clock s3c2410_common_frate_clks[] __initdata = {
+	FRATE(XTI, "xti", NULL, CLK_IS_ROOT, 0),
+};
+
+static void __init s3c2410_common_clk_register_fixed_ext(unsigned long xti_f)
+{
+	struct samsung_clock_alias xti_alias = ALIAS(XTI, NULL, "xtal");
+
+	s3c2410_common_frate_clks[0].fixed_rate = xti_f;
+	samsung_clk_register_fixed_rate(s3c2410_common_frate_clks,
+				ARRAY_SIZE(s3c2410_common_frate_clks));
+
+	samsung_clk_register_alias(&xti_alias, 1);
+}
+
+void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
+				    int current_soc,
+				    void __iomem *base)
+{
+	reg_base = base;
+
+	if (np) {
+		reg_base = of_iomap(np, 0);
+		if (!reg_base)
+			panic("%s: failed to map registers\n", __func__);
+	}
+
+	samsung_clk_init(np, reg_base, NR_CLKS);
+
+	/* Register external clocks only in non-dt cases */
+	if (!np)
+		s3c2410_common_clk_register_fixed_ext(xti_f);
+
+	if (current_soc == 2410) {
+		if (_get_rate("xti") == 12 * MHZ) {
+			s3c2410_plls[mpll].rate_table = pll_s3c2410_12mhz_tbl;
+			s3c2410_plls[upll].rate_table = pll_s3c2410_12mhz_tbl;
+		}
+
+		/* Register PLLs. */
+		samsung_clk_register_pll(s3c2410_plls,
+				ARRAY_SIZE(s3c2410_plls), reg_base);
+
+	} else { /* S3C2440, S3C2442 */
+		if (_get_rate("xti") == 12 * MHZ) {
+			/*
+			 * plls follow different calculation schemes, with the
+			 * upll following the same scheme as the s3c2410 plls
+			 */
+			s3c244x_common_plls[mpll].rate_table =
+							pll_s3c244x_12mhz_tbl;
+			s3c244x_common_plls[upll].rate_table =
+							pll_s3c2410_12mhz_tbl;
+		}
+
+		/* Register PLLs. */
+		samsung_clk_register_pll(s3c244x_common_plls,
+				ARRAY_SIZE(s3c244x_common_plls), reg_base);
+	}
+
+	/* Register common internal clocks. */
+	samsung_clk_register_mux(s3c2410_common_muxes,
+			ARRAY_SIZE(s3c2410_common_muxes));
+	samsung_clk_register_div(s3c2410_common_dividers,
+			ARRAY_SIZE(s3c2410_common_dividers));
+	samsung_clk_register_gate(s3c2410_common_gates,
+		ARRAY_SIZE(s3c2410_common_gates));
+
+	if (current_soc == S3C2440 || current_soc == S3C2442) {
+		samsung_clk_register_div(s3c244x_common_dividers,
+				ARRAY_SIZE(s3c244x_common_dividers));
+		samsung_clk_register_gate(s3c244x_common_gates,
+				ARRAY_SIZE(s3c244x_common_gates));
+		samsung_clk_register_mux(s3c244x_common_muxes,
+				ARRAY_SIZE(s3c244x_common_muxes));
+		samsung_clk_register_fixed_factor(s3c244x_common_ffactor,
+				ARRAY_SIZE(s3c244x_common_ffactor));
+	}
+
+	/* Register SoC-specific clocks. */
+	switch (current_soc) {
+	case S3C2410:
+		samsung_clk_register_div(s3c2410_dividers,
+				ARRAY_SIZE(s3c2410_dividers));
+		samsung_clk_register_fixed_factor(s3c2410_ffactor,
+				ARRAY_SIZE(s3c2410_ffactor));
+		samsung_clk_register_alias(s3c2410_aliases,
+			ARRAY_SIZE(s3c2410_common_aliases));
+		break;
+	case S3C2440:
+		samsung_clk_register_mux(s3c2440_muxes,
+				ARRAY_SIZE(s3c2440_muxes));
+		samsung_clk_register_gate(s3c2440_gates,
+				ARRAY_SIZE(s3c2440_gates));
+		break;
+	case S3C2442:
+		samsung_clk_register_mux(s3c2442_muxes,
+				ARRAY_SIZE(s3c2442_muxes));
+		samsung_clk_register_fixed_factor(s3c2442_ffactor,
+				ARRAY_SIZE(s3c2442_ffactor));
+		break;
+	}
+
+	/*
+	 * Register common aliases at the end, as some of the aliased clocks
+	 * are SoC specific.
+	 */
+	samsung_clk_register_alias(s3c2410_common_aliases,
+		ARRAY_SIZE(s3c2410_common_aliases));
+
+	if (current_soc == S3C2440 || current_soc == S3C2442) {
+		samsung_clk_register_alias(s3c244x_common_aliases,
+			ARRAY_SIZE(s3c244x_common_aliases));
+	}
+
+	s3c2410_clk_sleep_init();
+}
+
+static void __init s3c2410_clk_init(struct device_node *np)
+{
+	s3c2410_common_clk_init(np, 0, S3C2410, 0);
+}
+CLK_OF_DECLARE(s3c2410_clk, "samsung,s3c2410-clock", s3c2410_clk_init);
+
+static void __init s3c2440_clk_init(struct device_node *np)
+{
+	s3c2410_common_clk_init(np, 0, S3C2440, 0);
+}
+CLK_OF_DECLARE(s3c2440_clk, "samsung,s3c2440-clock", s3c2440_clk_init);
+
+static void __init s3c2442_clk_init(struct device_node *np)
+{
+	s3c2410_common_clk_init(np, 0, S3C2442, 0);
+}
+CLK_OF_DECLARE(s3c2442_clk, "samsung,s3c2442-clock", s3c2442_clk_init);

drivers/clk/samsung/clk-s3c2412.c

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Common Clock Framework support for S3C2412 and S3C2413.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#include <dt-bindings/clock/s3c2412.h>
+
+#include "clk.h"
+#include "clk-pll.h"
+
+#define LOCKTIME	0x00
+#define MPLLCON		0x04
+#define UPLLCON		0x08
+#define CLKCON		0x0c
+#define CLKDIVN		0x14
+#define CLKSRC		0x1c
+
+/* list of PLLs to be registered */
+enum s3c2412_plls {
+	mpll, upll,
+};
+
+static void __iomem *reg_base;
+
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *s3c2412_save;
+
+/*
+ * list of controller registers to be saved and restored during a
+ * suspend/resume cycle.
+ */
+static unsigned long s3c2412_clk_regs[] __initdata = {
+	LOCKTIME,
+	MPLLCON,
+	UPLLCON,
+	CLKCON,
+	CLKDIVN,
+	CLKSRC,
+};
+
+static int s3c2412_clk_suspend(void)
+{
+	samsung_clk_save(reg_base, s3c2412_save,
+				ARRAY_SIZE(s3c2412_clk_regs));
+
+	return 0;
+}
+
+static void s3c2412_clk_resume(void)
+{
+	samsung_clk_restore(reg_base, s3c2412_save,
+				ARRAY_SIZE(s3c2412_clk_regs));
+}
+
+static struct syscore_ops s3c2412_clk_syscore_ops = {
+	.suspend = s3c2412_clk_suspend,
+	.resume = s3c2412_clk_resume,
+};
+
+static void s3c2412_clk_sleep_init(void)
+{
+	s3c2412_save = samsung_clk_alloc_reg_dump(s3c2412_clk_regs,
+						ARRAY_SIZE(s3c2412_clk_regs));
+	if (!s3c2412_save) {
+		pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+			__func__);
+		return;
+	}
+
+	register_syscore_ops(&s3c2412_clk_syscore_ops);
+	return;
+}
+#else
+static void s3c2412_clk_sleep_init(void) {}
+#endif
+
+static struct clk_div_table divxti_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 1, .div = 2 },
+	{ .val = 2, .div = 4 },
+	{ .val = 3, .div = 6 },
+	{ .val = 4, .div = 8 },
+	{ .val = 5, .div = 10 },
+	{ .val = 6, .div = 12 },
+	{ .val = 7, .div = 14 },
+	{ /* sentinel */ },
+};
+
+struct samsung_div_clock s3c2412_dividers[] __initdata = {
+	DIV_T(0, "div_xti", "xti", CLKSRC, 0, 3, divxti_d),
+	DIV(0, "div_cam", "mux_cam", CLKDIVN, 16, 4),
+	DIV(0, "div_i2s", "mux_i2s", CLKDIVN, 12, 4),
+	DIV(0, "div_uart", "mux_uart", CLKDIVN, 8, 4),
+	DIV(0, "div_usb", "mux_usb", CLKDIVN, 6, 1),
+	DIV(0, "div_hclk_half", "hclk", CLKDIVN, 5, 1),
+	DIV(ARMDIV, "armdiv", "msysclk", CLKDIVN, 3, 1),
+	DIV(PCLK, "pclk", "hclk", CLKDIVN, 2, 1),
+	DIV(HCLK, "hclk", "armdiv", CLKDIVN, 0, 2),
+};
+
+struct samsung_fixed_factor_clock s3c2412_ffactor[] __initdata = {
+	FFACTOR(0, "ff_hclk", "hclk", 2, 1, CLK_SET_RATE_PARENT),
+};
+
+/*
+ * The first two use the OM[4] setting, which is not readable from
+ * software, so assume it is set to xti.
+ */
+PNAME(erefclk_p) = { "xti", "xti", "xti", "ext" };
+PNAME(urefclk_p) = { "xti", "xti", "xti", "ext" };
+
+PNAME(camclk_p) = { "usysclk", "hclk" };
+PNAME(usbclk_p) = { "usysclk", "hclk" };
+PNAME(i2sclk_p) = { "erefclk", "mpll" };
+PNAME(uartclk_p) = { "erefclk", "mpll" };
+PNAME(usysclk_p) = { "urefclk", "upll" };
+PNAME(msysclk_p) = { "mdivclk", "mpll" };
+PNAME(mdivclk_p) = { "xti", "div_xti" };
+PNAME(armclk_p) = { "armdiv", "hclk" };
+
+struct samsung_mux_clock s3c2412_muxes[] __initdata = {
+	MUX(0, "erefclk", erefclk_p, CLKSRC, 14, 2),
+	MUX(0, "urefclk", urefclk_p, CLKSRC, 12, 2),
+	MUX(0, "mux_cam", camclk_p, CLKSRC, 11, 1),
+	MUX(0, "mux_usb", usbclk_p, CLKSRC, 10, 1),
+	MUX(0, "mux_i2s", i2sclk_p, CLKSRC, 9, 1),
+	MUX(0, "mux_uart", uartclk_p, CLKSRC, 8, 1),
+	MUX(USYSCLK, "usysclk", usysclk_p, CLKSRC, 5, 1),
+	MUX(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1),
+	MUX(MDIVCLK, "mdivclk", mdivclk_p, CLKSRC, 3, 1),
+	MUX(ARMCLK, "armclk", armclk_p, CLKDIVN, 4, 1),
+};
+
+static struct samsung_pll_clock s3c2412_plls[] __initdata = {
+	[mpll] = PLL(pll_s3c2440_mpll, MPLL, "mpll", "xti",
+						LOCKTIME, MPLLCON, NULL),
+	[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "urefclk",
+						LOCKTIME, UPLLCON, NULL),
+};
+
+struct samsung_gate_clock s3c2412_gates[] __initdata = {
+	GATE(PCLK_WDT, "wdt", "pclk", CLKCON, 28, 0, 0),
+	GATE(PCLK_SPI, "spi", "pclk", CLKCON, 27, 0, 0),
+	GATE(PCLK_I2S, "i2s", "pclk", CLKCON, 26, 0, 0),
+	GATE(PCLK_I2C, "i2c", "pclk", CLKCON, 25, 0, 0),
+	GATE(PCLK_ADC, "adc", "pclk", CLKCON, 24, 0, 0),
+	GATE(PCLK_RTC, "rtc", "pclk", CLKCON, 23, 0, 0),
+	GATE(PCLK_GPIO, "gpio", "pclk", CLKCON, 22, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_UART2, "uart2", "pclk", CLKCON, 21, 0, 0),
+	GATE(PCLK_UART1, "uart1", "pclk", CLKCON, 20, 0, 0),
+	GATE(PCLK_UART0, "uart0", "pclk", CLKCON, 19, 0, 0),
+	GATE(PCLK_SDI, "sdi", "pclk", CLKCON, 18, 0, 0),
+	GATE(PCLK_PWM, "pwm", "pclk", CLKCON, 17, 0, 0),
+	GATE(PCLK_USBD, "usb-device", "pclk", CLKCON, 16, 0, 0),
+	GATE(SCLK_CAM, "sclk_cam", "div_cam", CLKCON, 15, 0, 0),
+	GATE(SCLK_UART, "sclk_uart", "div_uart", CLKCON, 14, 0, 0),
+	GATE(SCLK_I2S, "sclk_i2s", "div_i2s", CLKCON, 13, 0, 0),
+	GATE(SCLK_USBH, "sclk_usbh", "div_usb", CLKCON, 12, 0, 0),
+	GATE(SCLK_USBD, "sclk_usbd", "div_usb", CLKCON, 11, 0, 0),
+	GATE(HCLK_HALF, "hclk_half", "div_hclk_half", CLKCON, 10, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_X2, "hclkx2", "ff_hclk", CLKCON, 9, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_SDRAM, "sdram", "hclk", CLKCON, 8, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_USBH, "usb-host", "hclk", CLKCON, 6, 0, 0),
+	GATE(HCLK_LCD, "lcd", "hclk", CLKCON, 5, 0, 0),
+	GATE(HCLK_NAND, "nand", "hclk", CLKCON, 4, 0, 0),
+	GATE(HCLK_DMA3, "dma3", "hclk", CLKCON, 3, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA2, "dma2", "hclk", CLKCON, 2, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA1, "dma1", "hclk", CLKCON, 1, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA0, "dma0", "hclk", CLKCON, 0, CLK_IGNORE_UNUSED, 0),
+};
+
+struct samsung_clock_alias s3c2412_aliases[] __initdata = {
+	ALIAS(PCLK_UART0, "s3c2412-uart.0", "uart"),
+	ALIAS(PCLK_UART1, "s3c2412-uart.1", "uart"),
+	ALIAS(PCLK_UART2, "s3c2412-uart.2", "uart"),
+	ALIAS(PCLK_UART0, "s3c2412-uart.0", "clk_uart_baud2"),
+	ALIAS(PCLK_UART1, "s3c2412-uart.1", "clk_uart_baud2"),
+	ALIAS(PCLK_UART2, "s3c2412-uart.2", "clk_uart_baud2"),
+	ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
+	ALIAS(PCLK_I2C, "s3c2410-i2c.0", "i2c"),
+	ALIAS(PCLK_ADC, NULL, "adc"),
+	ALIAS(PCLK_RTC, NULL, "rtc"),
+	ALIAS(PCLK_PWM, NULL, "timers"),
+	ALIAS(HCLK_LCD, NULL, "lcd"),
+	ALIAS(PCLK_USBD, NULL, "usb-device"),
+	ALIAS(SCLK_USBD, NULL, "usb-bus-gadget"),
+	ALIAS(HCLK_USBH, NULL, "usb-host"),
+	ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
+	ALIAS(ARMCLK, NULL, "armclk"),
+	ALIAS(HCLK, NULL, "hclk"),
+	ALIAS(MPLL, NULL, "mpll"),
+	ALIAS(MSYSCLK, NULL, "fclk"),
+};
+
+/*
+ * fixed rate clocks generated outside the soc
+ * Only necessary until the devicetree-move is complete
+ */
+#define XTI	1
+struct samsung_fixed_rate_clock s3c2412_common_frate_clks[] __initdata = {
+	FRATE(XTI, "xti", NULL, CLK_IS_ROOT, 0),
+	FRATE(0, "ext", NULL, CLK_IS_ROOT, 0),
+};
+
+static void __init s3c2412_common_clk_register_fixed_ext(unsigned long xti_f,
+							 unsigned long ext_f)
+{
+	/* xtal alias is necessary for the current cpufreq driver */
+	struct samsung_clock_alias xti_alias = ALIAS(XTI, NULL, "xtal");
+
+	s3c2412_common_frate_clks[0].fixed_rate = xti_f;
+	s3c2412_common_frate_clks[1].fixed_rate = ext_f;
+	samsung_clk_register_fixed_rate(s3c2412_common_frate_clks,
+				ARRAY_SIZE(s3c2412_common_frate_clks));
+
+	samsung_clk_register_alias(&xti_alias, 1);
+}
+
+void __init s3c2412_common_clk_init(struct device_node *np, unsigned long xti_f,
+				    unsigned long ext_f, void __iomem *base)
+{
+	reg_base = base;
+
+	if (np) {
+		reg_base = of_iomap(np, 0);
+		if (!reg_base)
+			panic("%s: failed to map registers\n", __func__);
+	}
+
+	samsung_clk_init(np, reg_base, NR_CLKS);
+
+	/* Register external clocks only in non-dt cases */
+	if (!np)
+		s3c2412_common_clk_register_fixed_ext(xti_f, ext_f);
+
+	/* Register PLLs. */
+	samsung_clk_register_pll(s3c2412_plls, ARRAY_SIZE(s3c2412_plls),
+				 reg_base);
+
+	/* Register common internal clocks. */
+	samsung_clk_register_mux(s3c2412_muxes, ARRAY_SIZE(s3c2412_muxes));
+	samsung_clk_register_div(s3c2412_dividers,
+					  ARRAY_SIZE(s3c2412_dividers));
+	samsung_clk_register_gate(s3c2412_gates, ARRAY_SIZE(s3c2412_gates));
+	samsung_clk_register_fixed_factor(s3c2412_ffactor,
+					  ARRAY_SIZE(s3c2412_ffactor));
+	samsung_clk_register_alias(s3c2412_aliases,
+				   ARRAY_SIZE(s3c2412_aliases));
+
+	s3c2412_clk_sleep_init();
+}
+
+static void __init s3c2412_clk_init(struct device_node *np)
+{
+	s3c2412_common_clk_init(np, 0, 0, 0);
+}
+CLK_OF_DECLARE(s3c2412_clk, "samsung,s3c2412-clock", s3c2412_clk_init);

drivers/clk/samsung/clk-s3c2443.c

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Common Clock Framework support for S3C2443 and following SoCs.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#include <dt-bindings/clock/s3c2443.h>
+
+#include "clk.h"
+#include "clk-pll.h"
+
+/* S3C2416 clock controller register offsets */
+#define LOCKCON0	0x00
+#define LOCKCON1	0x04
+#define MPLLCON		0x10
+#define EPLLCON		0x18
+#define EPLLCON_K	0x1C
+#define CLKSRC		0x20
+#define CLKDIV0		0x24
+#define CLKDIV1		0x28
+#define CLKDIV2		0x2C
+#define HCLKCON		0x30
+#define PCLKCON		0x34
+#define SCLKCON		0x38
+
+/* the soc types */
+enum supported_socs {
+	S3C2416,
+	S3C2443,
+	S3C2450,
+};
+
+/* list of PLLs to be registered */
+enum s3c2443_plls {
+	mpll, epll,
+};
+
+static void __iomem *reg_base;
+
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *s3c2443_save;
+
+/*
+ * list of controller registers to be saved and restored during a
+ * suspend/resume cycle.
+ */
+static unsigned long s3c2443_clk_regs[] __initdata = {
+	LOCKCON0,
+	LOCKCON1,
+	MPLLCON,
+	EPLLCON,
+	EPLLCON_K,
+	CLKSRC,
+	CLKDIV0,
+	CLKDIV1,
+	CLKDIV2,
+	PCLKCON,
+	HCLKCON,
+	SCLKCON,
+};
+
+static int s3c2443_clk_suspend(void)
+{
+	samsung_clk_save(reg_base, s3c2443_save,
+				ARRAY_SIZE(s3c2443_clk_regs));
+
+	return 0;
+}
+
+static void s3c2443_clk_resume(void)
+{
+	samsung_clk_restore(reg_base, s3c2443_save,
+				ARRAY_SIZE(s3c2443_clk_regs));
+}
+
+static struct syscore_ops s3c2443_clk_syscore_ops = {
+	.suspend = s3c2443_clk_suspend,
+	.resume = s3c2443_clk_resume,
+};
+
+static void s3c2443_clk_sleep_init(void)
+{
+	s3c2443_save = samsung_clk_alloc_reg_dump(s3c2443_clk_regs,
+						ARRAY_SIZE(s3c2443_clk_regs));
+	if (!s3c2443_save) {
+		pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+			__func__);
+		return;
+	}
+
+	register_syscore_ops(&s3c2443_clk_syscore_ops);
+	return;
+}
+#else
+static void s3c2443_clk_sleep_init(void) {}
+#endif
+
+PNAME(epllref_p) = { "mpllref", "mpllref", "xti", "ext" };
+PNAME(esysclk_p) = { "epllref", "epll" };
+PNAME(mpllref_p) = { "xti", "mdivclk" };
+PNAME(msysclk_p) = { "mpllref", "mpll" };
+PNAME(armclk_p) = { "armdiv" , "hclk" };
+PNAME(i2s0_p) = { "div_i2s0", "ext_i2s", "epllref", "epllref" };
+
+struct samsung_mux_clock s3c2443_common_muxes[] __initdata = {
+	MUX(0, "epllref", epllref_p, CLKSRC, 7, 2),
+	MUX(ESYSCLK, "esysclk", esysclk_p, CLKSRC, 6, 1),
+	MUX(0, "mpllref", mpllref_p, CLKSRC, 3, 1),
+	MUX_A(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1, "msysclk"),
+	MUX_A(ARMCLK, "armclk", armclk_p, CLKDIV0, 13, 1, "armclk"),
+	MUX(0, "mux_i2s0", i2s0_p, CLKSRC, 14, 2),
+};
+
+static struct clk_div_table hclk_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 1, .div = 2 },
+	{ .val = 3, .div = 4 },
+	{ /* sentinel */ },
+};
+
+static struct clk_div_table mdivclk_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 1, .div = 3 },
+	{ .val = 2, .div = 5 },
+	{ .val = 3, .div = 7 },
+	{ .val = 4, .div = 9 },
+	{ .val = 5, .div = 11 },
+	{ .val = 6, .div = 13 },
+	{ .val = 7, .div = 15 },
+	{ /* sentinel */ },
+};
+
+struct samsung_div_clock s3c2443_common_dividers[] __initdata = {
+	DIV_T(0, "mdivclk", "xti", CLKDIV0, 6, 3, mdivclk_d),
+	DIV(0, "prediv", "msysclk", CLKDIV0, 4, 2),
+	DIV_T(HCLK, "hclk", "prediv", CLKDIV0, 0, 2, hclk_d),
+	DIV(PCLK, "pclk", "hclk", CLKDIV0, 2, 1),
+	DIV(0, "div_hsspi0_epll", "esysclk", CLKDIV1, 24, 2),
+	DIV(0, "div_fimd", "esysclk", CLKDIV1, 16, 8),
+	DIV(0, "div_i2s0", "esysclk", CLKDIV1, 12, 4),
+	DIV(0, "div_uart", "esysclk", CLKDIV1, 8, 4),
+	DIV(0, "div_hsmmc1", "esysclk", CLKDIV1, 6, 2),
+	DIV(0, "div_usbhost", "esysclk", CLKDIV1, 4, 2),
+};
+
+struct samsung_gate_clock s3c2443_common_gates[] __initdata = {
+	GATE(SCLK_HSMMC_EXT, "sclk_hsmmcext", "ext", SCLKCON, 13, 0, 0),
+	GATE(SCLK_HSMMC1, "sclk_hsmmc1", "div_hsmmc1", SCLKCON, 12, 0, 0),
+	GATE(SCLK_FIMD, "sclk_fimd", "div_fimd", SCLKCON, 10, 0, 0),
+	GATE(SCLK_I2S0, "sclk_i2s0", "mux_i2s0", SCLKCON, 9, 0, 0),
+	GATE(SCLK_UART, "sclk_uart", "div_uart", SCLKCON, 8, 0, 0),
+	GATE(SCLK_USBH, "sclk_usbhost", "div_usbhost", SCLKCON, 1, 0, 0),
+	GATE(HCLK_DRAM, "dram", "hclk", HCLKCON, 19, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_SSMC, "ssmc", "hclk", HCLKCON, 18, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_HSMMC1, "hsmmc1", "hclk", HCLKCON, 16, 0, 0),
+	GATE(HCLK_USBD, "usb-device", "hclk", HCLKCON, 12, 0, 0),
+	GATE(HCLK_USBH, "usb-host", "hclk", HCLKCON, 11, 0, 0),
+	GATE(HCLK_LCD, "lcd", "hclk", HCLKCON, 9, 0, 0),
+	GATE(HCLK_DMA5, "dma5", "hclk", HCLKCON, 5, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA4, "dma4", "hclk", HCLKCON, 4, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA3, "dma3", "hclk", HCLKCON, 3, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA2, "dma2", "hclk", HCLKCON, 2, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA1, "dma1", "hclk", HCLKCON, 1, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA0, "dma0", "hclk", HCLKCON, 0, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_GPIO, "gpio", "pclk", PCLKCON, 13, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_RTC, "rtc", "pclk", PCLKCON, 12, 0, 0),
+	GATE(PCLK_WDT, "wdt", "pclk", PCLKCON, 11, 0, 0),
+	GATE(PCLK_PWM, "pwm", "pclk", PCLKCON, 10, 0, 0),
+	GATE(PCLK_I2S0, "i2s0", "pclk", PCLKCON, 9, 0, 0),
+	GATE(PCLK_AC97, "ac97", "pclk", PCLKCON, 8, 0, 0),
+	GATE(PCLK_ADC, "adc", "pclk", PCLKCON, 7, 0, 0),
+	GATE(PCLK_SPI0, "spi0", "pclk", PCLKCON, 6, 0, 0),
+	GATE(PCLK_I2C0, "i2c0", "pclk", PCLKCON, 4, 0, 0),
+	GATE(PCLK_UART3, "uart3", "pclk", PCLKCON, 3, 0, 0),
+	GATE(PCLK_UART2, "uart2", "pclk", PCLKCON, 2, 0, 0),
+	GATE(PCLK_UART1, "uart1", "pclk", PCLKCON, 1, 0, 0),
+	GATE(PCLK_UART0, "uart0", "pclk", PCLKCON, 0, 0, 0),
+};
+
+struct samsung_clock_alias s3c2443_common_aliases[] __initdata = {
+	ALIAS(HCLK, NULL, "hclk"),
+	ALIAS(HCLK_SSMC, NULL, "nand"),
+	ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
+	ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
+	ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
+	ALIAS(PCLK_UART3, "s3c2440-uart.3", "uart"),
+	ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
+	ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
+	ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
+	ALIAS(PCLK_UART3, "s3c2440-uart.3", "clk_uart_baud2"),
+	ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
+	ALIAS(PCLK_PWM, NULL, "timers"),
+	ALIAS(PCLK_RTC, NULL, "rtc"),
+	ALIAS(PCLK_WDT, NULL, "watchdog"),
+	ALIAS(PCLK_ADC, NULL, "adc"),
+	ALIAS(PCLK_I2C0, "s3c2410-i2c.0", "i2c"),
+	ALIAS(HCLK_USBD, NULL, "usb-device"),
+	ALIAS(HCLK_USBH, NULL, "usb-host"),
+	ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
+	ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi"),
+	ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi_busclk0"),
+	ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
+	ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
+	ALIAS(PCLK_I2S0, "samsung-i2s.0", "iis"),
+	ALIAS(SCLK_I2S0, NULL, "i2s-if"),
+	ALIAS(HCLK_LCD, NULL, "lcd"),
+	ALIAS(SCLK_FIMD, NULL, "sclk_fimd"),
+};
+
+/* S3C2416 specific clocks */
+
+static struct samsung_pll_clock s3c2416_pll_clks[] __initdata = {
+	[mpll] = PLL(pll_6552_s3c2416, 0, "mpll", "mpllref",
+						LOCKCON0, MPLLCON, NULL),
+	[epll] = PLL(pll_6553, 0, "epll", "epllref",
+						LOCKCON1, EPLLCON, NULL),
+};
+
+PNAME(s3c2416_hsmmc0_p) = { "sclk_hsmmc0", "sclk_hsmmcext" };
+PNAME(s3c2416_hsmmc1_p) = { "sclk_hsmmc1", "sclk_hsmmcext" };
+PNAME(s3c2416_hsspi0_p) = { "hsspi0_epll", "hsspi0_mpll" };
+
+static struct clk_div_table armdiv_s3c2416_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 1, .div = 2 },
+	{ .val = 2, .div = 3 },
+	{ .val = 3, .div = 4 },
+	{ .val = 5, .div = 6 },
+	{ .val = 7, .div = 8 },
+	{ /* sentinel */ },
+};
+
+struct samsung_div_clock s3c2416_dividers[] __initdata = {
+	DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 3, armdiv_s3c2416_d),
+	DIV(0, "div_hsspi0_mpll", "msysclk", CLKDIV2, 0, 4),
+	DIV(0, "div_hsmmc0", "esysclk", CLKDIV2, 6, 2),
+};
+
+struct samsung_mux_clock s3c2416_muxes[] __initdata = {
+	MUX(MUX_HSMMC0, "mux_hsmmc0", s3c2416_hsmmc0_p, CLKSRC, 16, 1),
+	MUX(MUX_HSMMC1, "mux_hsmmc1", s3c2416_hsmmc1_p, CLKSRC, 17, 1),
+	MUX(MUX_HSSPI0, "mux_hsspi0", s3c2416_hsspi0_p, CLKSRC, 18, 1),
+};
+
+struct samsung_gate_clock s3c2416_gates[] __initdata = {
+	GATE(0, "hsspi0_mpll", "div_hsspi0_mpll", SCLKCON, 19, 0, 0),
+	GATE(0, "hsspi0_epll", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
+	GATE(0, "sclk_hsmmc0", "div_hsmmc0", SCLKCON, 6, 0, 0),
+	GATE(HCLK_2D, "2d", "hclk", HCLKCON, 20, 0, 0),
+	GATE(HCLK_HSMMC0, "hsmmc0", "hclk", HCLKCON, 15, 0, 0),
+	GATE(HCLK_IROM, "irom", "hclk", HCLKCON, 13, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_PCM, "pcm", "pclk", PCLKCON, 19, 0, 0),
+};
+
+struct samsung_clock_alias s3c2416_aliases[] __initdata = {
+	ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
+	ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
+	ALIAS(MUX_HSMMC0, "s3c-sdhci.0", "mmc_busclk.2"),
+	ALIAS(MUX_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
+	ALIAS(MUX_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
+	ALIAS(ARMDIV, NULL, "armdiv"),
+};
+
+/* S3C2443 specific clocks */
+
+static struct samsung_pll_clock s3c2443_pll_clks[] __initdata = {
+	[mpll] = PLL(pll_3000, 0, "mpll", "mpllref",
+						LOCKCON0, MPLLCON, NULL),
+	[epll] = PLL(pll_2126, 0, "epll", "epllref",
+						LOCKCON1, EPLLCON, NULL),
+};
+
+static struct clk_div_table armdiv_s3c2443_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 8, .div = 2 },
+	{ .val = 2, .div = 3 },
+	{ .val = 9, .div = 4 },
+	{ .val = 10, .div = 6 },
+	{ .val = 11, .div = 8 },
+	{ .val = 13, .div = 12 },
+	{ .val = 15, .div = 16 },
+	{ /* sentinel */ },
+};
+
+struct samsung_div_clock s3c2443_dividers[] __initdata = {
+	DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 4, armdiv_s3c2443_d),
+	DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
+};
+
+struct samsung_gate_clock s3c2443_gates[] __initdata = {
+	GATE(SCLK_HSSPI0, "sclk_hsspi0", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
+	GATE(SCLK_CAM, "sclk_cam", "div_cam", SCLKCON, 11, 0, 0),
+	GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
+	GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 15, 0, 0),
+	GATE(PCLK_SDI, "sdi", "pclk", PCLKCON, 5, 0, 0),
+};
+
+struct samsung_clock_alias s3c2443_aliases[] __initdata = {
+	ALIAS(SCLK_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
+	ALIAS(SCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
+	ALIAS(SCLK_CAM, NULL, "camif-upll"),
+	ALIAS(PCLK_SPI1, "s3c2410-spi.0", "spi"),
+	ALIAS(PCLK_SDI, NULL, "sdi"),
+	ALIAS(HCLK_CFC, NULL, "cfc"),
+	ALIAS(ARMDIV, NULL, "armdiv"),
+};
+
+/* S3C2450 specific clocks */
+
+PNAME(s3c2450_cam_p) = { "div_cam", "hclk" };
+PNAME(s3c2450_hsspi1_p) = { "hsspi1_epll", "hsspi1_mpll" };
+PNAME(i2s1_p) = { "div_i2s1", "ext_i2s", "epllref", "epllref" };
+
+struct samsung_div_clock s3c2450_dividers[] __initdata = {
+	DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
+	DIV(0, "div_hsspi1_epll", "esysclk", CLKDIV2, 24, 2),
+	DIV(0, "div_hsspi1_mpll", "msysclk", CLKDIV2, 16, 4),
+	DIV(0, "div_i2s1", "esysclk", CLKDIV2, 12, 4),
+};
+
+struct samsung_mux_clock s3c2450_muxes[] __initdata = {
+	MUX(0, "mux_cam", s3c2450_cam_p, CLKSRC, 20, 1),
+	MUX(MUX_HSSPI1, "mux_hsspi1", s3c2450_hsspi1_p, CLKSRC, 19, 1),
+	MUX(0, "mux_i2s1", i2s1_p, CLKSRC, 12, 2),
+};
+
+struct samsung_gate_clock s3c2450_gates[] __initdata = {
+	GATE(SCLK_I2S1, "sclk_i2s1", "div_i2s1", SCLKCON, 5, 0, 0),
+	GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, 0, 0),
+	GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
+	GATE(HCLK_DMA7, "dma7", "hclk", HCLKCON, 7, CLK_IGNORE_UNUSED, 0),
+	GATE(HCLK_DMA6, "dma6", "hclk", HCLKCON, 6, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_I2S1, "i2s1", "pclk", PCLKCON, 17, 0, 0),
+	GATE(PCLK_I2C1, "i2c1", "pclk", PCLKCON, 16, 0, 0),
+	GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 14, 0, 0),
+};
+
+struct samsung_clock_alias s3c2450_aliases[] __initdata = {
+	ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi"),
+	ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi_busclk0"),
+	ALIAS(MUX_HSSPI1, "s3c2443-spi.1", "spi_busclk2"),
+	ALIAS(PCLK_I2C1, "s3c2410-i2c.1", "i2c"),
+};
+
+/*
+ * fixed rate clocks generated outside the soc
+ * Only necessary until the devicetree-move is complete
+ */
+struct samsung_fixed_rate_clock s3c2443_common_frate_clks[] __initdata = {
+	FRATE(0, "xti", NULL, CLK_IS_ROOT, 0),
+	FRATE(0, "ext", NULL, CLK_IS_ROOT, 0),
+	FRATE(0, "ext_i2s", NULL, CLK_IS_ROOT, 0),
+	FRATE(0, "ext_uart", NULL, CLK_IS_ROOT, 0),
+};
+
+static void __init s3c2443_common_clk_register_fixed_ext(unsigned long xti_f)
+{
+	s3c2443_common_frate_clks[0].fixed_rate = xti_f;
+	samsung_clk_register_fixed_rate(s3c2443_common_frate_clks,
+				ARRAY_SIZE(s3c2443_common_frate_clks));
+}
+
+void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f,
+				    int current_soc,
+				    void __iomem *base)
+{
+	reg_base = base;
+
+	if (np) {
+		reg_base = of_iomap(np, 0);
+		if (!reg_base)
+			panic("%s: failed to map registers\n", __func__);
+	}
+
+	samsung_clk_init(np, reg_base, NR_CLKS);
+
+	/* Register external clocks only in non-dt cases */
+	if (!np)
+		s3c2443_common_clk_register_fixed_ext(xti_f);
+
+	/* Register PLLs. */
+	if (current_soc == S3C2416 || current_soc == S3C2450)
+		samsung_clk_register_pll(s3c2416_pll_clks,
+				ARRAY_SIZE(s3c2416_pll_clks), reg_base);
+	else
+		samsung_clk_register_pll(s3c2443_pll_clks,
+				ARRAY_SIZE(s3c2443_pll_clks), reg_base);
+
+	/* Register common internal clocks. */
+	samsung_clk_register_mux(s3c2443_common_muxes,
+			ARRAY_SIZE(s3c2443_common_muxes));
+	samsung_clk_register_div(s3c2443_common_dividers,
+			ARRAY_SIZE(s3c2443_common_dividers));
+	samsung_clk_register_gate(s3c2443_common_gates,
+		ARRAY_SIZE(s3c2443_common_gates));
+	samsung_clk_register_alias(s3c2443_common_aliases,
+		ARRAY_SIZE(s3c2443_common_aliases));
+
+	/* Register SoC-specific clocks. */
+	switch (current_soc) {
+	case S3C2450:
+		samsung_clk_register_div(s3c2450_dividers,
+				ARRAY_SIZE(s3c2450_dividers));
+		samsung_clk_register_mux(s3c2450_muxes,
+				ARRAY_SIZE(s3c2450_muxes));
+		samsung_clk_register_gate(s3c2450_gates,
+				ARRAY_SIZE(s3c2450_gates));
+		samsung_clk_register_alias(s3c2450_aliases,
+				ARRAY_SIZE(s3c2450_aliases));
+		/* fall through, as s3c2450 extends the s3c2416 clocks */
+	case S3C2416:
+		samsung_clk_register_div(s3c2416_dividers,
+				ARRAY_SIZE(s3c2416_dividers));
+		samsung_clk_register_mux(s3c2416_muxes,
+				ARRAY_SIZE(s3c2416_muxes));
+		samsung_clk_register_gate(s3c2416_gates,
+				ARRAY_SIZE(s3c2416_gates));
+		samsung_clk_register_alias(s3c2416_aliases,
+				ARRAY_SIZE(s3c2416_aliases));
+		break;
+	case S3C2443:
+		samsung_clk_register_div(s3c2443_dividers,
+				ARRAY_SIZE(s3c2443_dividers));
+		samsung_clk_register_gate(s3c2443_gates,
+				ARRAY_SIZE(s3c2443_gates));
+		samsung_clk_register_alias(s3c2443_aliases,
+				ARRAY_SIZE(s3c2443_aliases));
+		break;
+	}
+
+	s3c2443_clk_sleep_init();
+}
+
+static void __init s3c2416_clk_init(struct device_node *np)
+{
+	s3c2443_common_clk_init(np, 0, S3C2416, 0);
+}
+CLK_OF_DECLARE(s3c2416_clk, "samsung,s3c2416-clock", s3c2416_clk_init);
+
+static void __init s3c2443_clk_init(struct device_node *np)
+{
+	s3c2443_common_clk_init(np, 0, S3C2443, 0);
+}
+CLK_OF_DECLARE(s3c2443_clk, "samsung,s3c2443-clock", s3c2443_clk_init);
+
+static void __init s3c2450_clk_init(struct device_node *np)
+{
+	s3c2443_common_clk_init(np, 0, S3C2450, 0);
+}
+CLK_OF_DECLARE(s3c2450_clk, "samsung,s3c2450-clock", s3c2450_clk_init);

drivers/cpufreq/s3c24xx-cpufreq.c

@@ -141,6 +141,7 @@ static int s3c_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
 
 static void s3c_cpufreq_setfvco(struct s3c_cpufreq_config *cfg)
 {
+	cfg->mpll = _clk_mpll;
 	(cfg->info->set_fvco)(cfg);
 }
 

include/dt-bindings/clock/s3c2410.h

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Device Tree binding constants clock controllers of Samsung S3C2410 and later.
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_SAMSUNG_S3C2410_CLOCK_H
+#define _DT_BINDINGS_CLOCK_SAMSUNG_S3C2410_CLOCK_H
+
+/*
+ * Let each exported clock get a unique index, which is used on DT-enabled
+ * platforms to lookup the clock from a clock specifier. These indices are
+ * therefore considered an ABI and so must not be changed. This implies
+ * that new clocks should be added either in free spaces between clock groups
+ * or at the end.
+ */
+
+/* Core clocks. */
+
+/* id 1 is reserved */
+#define MPLL			2
+#define UPLL			3
+#define FCLK			4
+#define HCLK			5
+#define PCLK			6
+#define UCLK			7
+#define ARMCLK			8
+
+/* pclk-gates */
+#define PCLK_UART0		16
+#define PCLK_UART1		17
+#define PCLK_UART2		18
+#define PCLK_I2C		19
+#define PCLK_SDI		20
+#define PCLK_SPI		21
+#define PCLK_ADC		22
+#define PCLK_AC97		23
+#define PCLK_I2S		24
+#define PCLK_PWM		25
+#define PCLK_RTC		26
+#define PCLK_GPIO		27
+
+
+/* hclk-gates */
+#define HCLK_LCD		32
+#define HCLK_USBH		33
+#define HCLK_USBD		34
+#define HCLK_NAND		35
+#define HCLK_CAM		36
+
+
+#define CAMIF			40
+
+
+/* Total number of clocks. */
+#define NR_CLKS			(CAMIF + 1)
+
+#endif /* _DT_BINDINGS_CLOCK_SAMSUNG_S3C2443_CLOCK_H */

include/dt-bindings/clock/s3c2412.h

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Device Tree binding constants clock controllers of Samsung S3C2412.
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_SAMSUNG_S3C2412_CLOCK_H
+#define _DT_BINDINGS_CLOCK_SAMSUNG_S3C2412_CLOCK_H
+
+/*
+ * Let each exported clock get a unique index, which is used on DT-enabled
+ * platforms to lookup the clock from a clock specifier. These indices are
+ * therefore considered an ABI and so must not be changed. This implies
+ * that new clocks should be added either in free spaces between clock groups
+ * or at the end.
+ */
+
+/* Core clocks. */
+
+/* id 1 is reserved */
+#define MPLL			2
+#define UPLL			3
+#define MDIVCLK			4
+#define MSYSCLK			5
+#define USYSCLK			6
+#define HCLK			7
+#define PCLK			8
+#define ARMDIV			9
+#define ARMCLK			10
+
+
+/* Special clocks */
+#define SCLK_CAM		16
+#define SCLK_UART		17
+#define SCLK_I2S		18
+#define SCLK_USBD		19
+#define SCLK_USBH		20
+
+/* pclk-gates */
+#define PCLK_WDT		32
+#define PCLK_SPI		33
+#define PCLK_I2S		34
+#define PCLK_I2C		35
+#define PCLK_ADC		36
+#define PCLK_RTC		37
+#define PCLK_GPIO		38
+#define PCLK_UART2		39
+#define PCLK_UART1		40
+#define PCLK_UART0		41
+#define PCLK_SDI		42
+#define PCLK_PWM		43
+#define PCLK_USBD		44
+
+/* hclk-gates */
+#define HCLK_HALF		48
+#define HCLK_X2			49
+#define HCLK_SDRAM		50
+#define HCLK_USBH		51
+#define HCLK_LCD		52
+#define HCLK_NAND		53
+#define HCLK_DMA3		54
+#define HCLK_DMA2		55
+#define HCLK_DMA1		56
+#define HCLK_DMA0		57
+
+/* Total number of clocks. */
+#define NR_CLKS			(HCLK_DMA0 + 1)
+
+#endif /* _DT_BINDINGS_CLOCK_SAMSUNG_S3C2412_CLOCK_H */

include/dt-bindings/clock/s3c2443.h

+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Device Tree binding constants clock controllers of Samsung S3C2443 and later.
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_SAMSUNG_S3C2443_CLOCK_H
+#define _DT_BINDINGS_CLOCK_SAMSUNG_S3C2443_CLOCK_H
+
+/*
+ * Let each exported clock get a unique index, which is used on DT-enabled
+ * platforms to lookup the clock from a clock specifier. These indices are
+ * therefore considered an ABI and so must not be changed. This implies
+ * that new clocks should be added either in free spaces between clock groups
+ * or at the end.
+ */
+
+/* Core clocks. */
+#define MSYSCLK			1
+#define ESYSCLK			2
+#define ARMDIV			3
+#define ARMCLK			4
+#define HCLK			5
+#define PCLK			6
+
+/* Special clocks */
+#define SCLK_HSSPI0		16
+#define SCLK_FIMD		17
+#define SCLK_I2S0		18
+#define SCLK_I2S1		19
+#define SCLK_HSMMC1		20
+#define SCLK_HSMMC_EXT		21
+#define SCLK_CAM		22
+#define SCLK_UART		23
+#define SCLK_USBH		24
+
+/* Muxes */
+#define MUX_HSSPI0		32
+#define MUX_HSSPI1		33
+#define MUX_HSMMC0		34
+#define MUX_HSMMC1		35
+
+/* hclk-gates */
+#define HCLK_DMA0		48
+#define HCLK_DMA1		49
+#define HCLK_DMA2		50
+#define HCLK_DMA3		51
+#define HCLK_DMA4		52
+#define HCLK_DMA5		53
+#define HCLK_DMA6		54
+#define HCLK_DMA7		55
+#define HCLK_CAM		56
+#define HCLK_LCD		57
+#define HCLK_USBH		58
+#define HCLK_USBD		59
+#define HCLK_IROM		60
+#define HCLK_HSMMC0		61
+#define HCLK_HSMMC1		62
+#define HCLK_CFC		63
+#define HCLK_SSMC		64
+#define HCLK_DRAM		65
+#define HCLK_2D			66
+
+/* pclk-gates */
+#define PCLK_UART0		72
+#define PCLK_UART1		73
+#define PCLK_UART2		74
+#define PCLK_UART3		75
+#define PCLK_I2C0		76
+#define PCLK_SDI		77
+#define PCLK_SPI0		78
+#define PCLK_ADC		79
+#define PCLK_AC97		80
+#define PCLK_I2S0		81
+#define PCLK_PWM		82
+#define PCLK_WDT		83
+#define PCLK_RTC		84
+#define PCLK_GPIO		85
+#define PCLK_SPI1		86
+#define PCLK_CHIPID		87
+#define PCLK_I2C1		88
+#define PCLK_I2S1		89
+#define PCLK_PCM		90
+
+/* Total number of clocks. */
+#define NR_CLKS			(PCLK_PCM + 1)
+
+#endif /* _DT_BINDINGS_CLOCK_SAMSUNG_S3C2443_CLOCK_H */