Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci

arch/arm/Kconfig

@@ -585,6 +585,8 @@ config ARCH_DAVINCI
 	select ARCH_REQUIRE_GPIOLIB
 	select HAVE_CLK
 	select ZONE_DMA
+	select HAVE_IDE
+	select COMMON_CLKDEV
 	help
 	  Support for TI's DaVinci platform.
 

arch/arm/mach-davinci/Kconfig

@@ -4,19 +4,56 @@ menu "TI DaVinci Implementations"
 
 comment "DaVinci Core Type"
 
-config ARCH_DAVINCI644x
-	default y
+config ARCH_DAVINCI_DM644x
 	bool "DaVinci 644x based system"
 
 comment "DaVinci Board Type"
 
 config MACH_DAVINCI_EVM
-	bool "TI DaVinci EVM"
+	bool "TI DM644x EVM"
 	default y
-	depends on ARCH_DAVINCI644x
+	depends on ARCH_DAVINCI_DM644x
 	help
 	  Configure this option to specify the whether the board used
-	  for development is a DaVinci EVM
+	  for development is a DM644x EVM
+
+
+config DAVINCI_MUX
+	bool "DAVINCI multiplexing support"
+	depends on ARCH_DAVINCI
+	default y
+	help
+	  Pin multiplexing support for DAVINCI boards. If your bootloader
+	  sets the multiplexing correctly, say N. Otherwise, or if unsure,
+	  say Y.
+
+config DAVINCI_MUX_DEBUG
+        bool "Multiplexing debug output"
+        depends on DAVINCI_MUX
+        help
+          Makes the multiplexing functions print out a lot of debug info.
+          This is useful if you want to find out the correct values of the
+          multiplexing registers.
+
+config DAVINCI_MUX_WARNINGS
+        bool "Warn about pins the bootloader didn't set up"
+        depends on DAVINCI_MUX
+        help
+          Choose Y here to warn whenever driver initialization logic needs
+          to change the pin multiplexing setup.  When there are no warnings
+          printed, it's safe to deselect DAVINCI_MUX for your product.
+
+config DAVINCI_RESET_CLOCKS
+	bool "Reset unused clocks during boot"
+	depends on ARCH_DAVINCI
+	help
+	  Say Y if you want to reset unused clocks during boot.
+	  This option saves power, but assumes all drivers are
+	  using the clock framework. Broken drivers that do not
+	  yet use clock framework may not work with this option.
+	  If you are booting from another operating system, you
+	  probably do not want this option enabled until your
+	  device drivers work properly.
 
 endmenu
 

arch/arm/mach-davinci/Makefile

@@ -5,7 +5,12 @@
 
 # Common objects
 obj-y 			:= time.o irq.o clock.o serial.o io.o id.o psc.o \
-			   gpio.o mux.o devices.o usb.o
+			   gpio.o devices.o dma.o usb.o
+
+obj-$(CONFIG_DAVINCI_MUX)		+= mux.o
+
+# Chip specific
+obj-$(CONFIG_ARCH_DAVINCI_DM644x)       += dm644x.o
 
 # Board specific
-obj-$(CONFIG_MACH_DAVINCI_EVM)  += board-evm.o
+obj-$(CONFIG_MACH_DAVINCI_EVM)  	+= board-dm644x-evm.o

arch/arm/mach-davinci/board-evm.c → arch/arm/mach-davinci/board-dm644x-evm.c

@@ -15,15 +15,20 @@
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
 #include <linux/leds.h>
+#include <linux/memory.h>
+#include <linux/etherdevice.h>
 
 #include <linux/i2c.h>
 #include <linux/i2c/pcf857x.h>
 #include <linux/i2c/at24.h>
 
 #include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/io.h>
+#include <linux/phy.h>
+#include <linux/clk.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -32,25 +37,34 @@
 #include <asm/mach/map.h>
 #include <asm/mach/flash.h>
 
-#include <mach/hardware.h>
+#include <mach/dm644x.h>
 #include <mach/common.h>
 #include <mach/i2c.h>
+#include <mach/serial.h>
+#include <mach/mux.h>
+#include <mach/psc.h>
+#include <mach/nand.h>
 
-/* other misc. init functions */
-void __init davinci_psc_init(void);
-void __init davinci_irq_init(void);
-void __init davinci_map_common_io(void);
-void __init davinci_init_common_hw(void);
+#define DM644X_EVM_PHY_MASK		(0x2)
+#define DM644X_EVM_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */
 
-#if defined(CONFIG_MTD_PHYSMAP) || \
-    defined(CONFIG_MTD_PHYSMAP_MODULE)
+#define DAVINCI_CFC_ATA_BASE		  0x01C66000
+
+#define DAVINCI_ASYNC_EMIF_CONTROL_BASE   0x01e00000
+#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE  0x02000000
+#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE  0x04000000
+#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE  0x06000000
+#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE  0x08000000
+
+#define LXT971_PHY_ID	(0x001378e2)
+#define LXT971_PHY_MASK	(0xfffffff0)
 
 static struct mtd_partition davinci_evm_norflash_partitions[] = {
-	/* bootloader (U-Boot, etc) in first 4 sectors */
+	/* bootloader (UBL, U-Boot, etc) in first 5 sectors */
 	{
 		.name		= "bootloader",
 		.offset		= 0,
-		.size		= 4 * SZ_64K,
+		.size		= 5 * SZ_64K,
 		.mask_flags	= MTD_WRITEABLE, /* force read-only */
 	},
 	/* bootloader params in the next 1 sectors */
@@ -100,10 +114,89 @@ static struct platform_device davinci_evm_norflash_device = {
 	.resource	= &davinci_evm_norflash_resource,
 };
 
-#endif
+/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
+ * It may used instead of the (default) NOR chip to boot, using TI's
+ * tools to install the secondary boot loader (UBL) and U-Boot.
+ */
+struct mtd_partition davinci_evm_nandflash_partition[] = {
+	/* Bootloader layout depends on whose u-boot is installed, but we
+	 * can hide all the details.
+	 *  - block 0 for u-boot environment ... in mainline u-boot
+	 *  - block 1 for UBL (plus up to four backup copies in blocks 2..5)
+	 *  - blocks 6...? for u-boot
+	 *  - blocks 16..23 for u-boot environment ... in TI's u-boot
+	 */
+	{
+		.name		= "bootloader",
+		.offset		= 0,
+		.size		= SZ_256K + SZ_128K,
+		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+	},
+	/* Kernel */
+	{
+		.name		= "kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_4M,
+		.mask_flags	= 0,
+	},
+	/* File system (older GIT kernels started this on the 5MB mark) */
+	{
+		.name		= "filesystem",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0,
+	}
+	/* A few blocks at end hold a flash BBT ... created by TI's CCS
+	 * using flashwriter_nand.out, but ignored by TI's versions of
+	 * Linux and u-boot.  We boot faster by using them.
+	 */
+};
 
-#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
-    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
+static struct davinci_nand_pdata davinci_evm_nandflash_data = {
+	.parts		= davinci_evm_nandflash_partition,
+	.nr_parts	= ARRAY_SIZE(davinci_evm_nandflash_partition),
+	.ecc_mode	= NAND_ECC_HW,
+	.options	= NAND_USE_FLASH_BBT,
+};
+
+static struct resource davinci_evm_nandflash_resource[] = {
+	{
+		.start		= DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
+		.end		= DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
+		.flags		= IORESOURCE_MEM,
+	}, {
+		.start		= DAVINCI_ASYNC_EMIF_CONTROL_BASE,
+		.end		= DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device davinci_evm_nandflash_device = {
+	.name		= "davinci_nand",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &davinci_evm_nandflash_data,
+	},
+	.num_resources	= ARRAY_SIZE(davinci_evm_nandflash_resource),
+	.resource	= davinci_evm_nandflash_resource,
+};
+
+static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device davinci_fb_device = {
+	.name		= "davincifb",
+	.id		= -1,
+	.dev = {
+		.dma_mask		= &davinci_fb_dma_mask,
+		.coherent_dma_mask      = DMA_BIT_MASK(32),
+	},
+	.num_resources = 0,
+};
+
+static struct platform_device rtc_dev = {
+	.name           = "rtc_davinci_evm",
+	.id             = -1,
+};
 
 static struct resource ide_resources[] = {
 	{
@@ -118,7 +211,7 @@ static struct resource ide_resources[] = {
 	},
 };
 
-static u64 ide_dma_mask = DMA_BIT_MASK(32);
+static u64 ide_dma_mask = DMA_32BIT_MASK;
 
 static struct platform_device ide_dev = {
 	.name           = "palm_bk3710",
@@ -127,12 +220,10 @@ static struct platform_device ide_dev = {
 	.num_resources  = ARRAY_SIZE(ide_resources),
 	.dev = {
 		.dma_mask		= &ide_dma_mask,
-		.coherent_dma_mask      = DMA_BIT_MASK(32),
+		.coherent_dma_mask      = DMA_32BIT_MASK,
 	},
 };
 
-#endif
-
 /*----------------------------------------------------------------------*/
 
 /*
@@ -311,7 +402,9 @@ evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 	gpio_request(gpio + 7, "nCF_SEL");
 	gpio_direction_output(gpio + 7, 1);
 
-	/* irlml6401 sustains over 3A, switches 5V in under 8 msec */
+	/* irlml6401 switches over 1A, in under 8 msec;
+	 * now it can be managed by nDRV_VBUS ...
+	 */
 	setup_usb(500, 8);
 
 	return 0;
@@ -343,13 +436,119 @@ static struct pcf857x_platform_data pcf_data_u35 = {
  *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
  *  - ... newer boards may have more
  */
+static struct memory_accessor *at24_mem_acc;
+
+static void at24_setup(struct memory_accessor *mem_acc, void *context)
+{
+	DECLARE_MAC_BUF(mac_str);
+	char mac_addr[6];
+
+	at24_mem_acc = mem_acc;
+
+	/* Read MAC addr from EEPROM */
+	if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, 6) == 6) {
+		printk(KERN_INFO "Read MAC addr from EEPROM: %s\n",
+		       print_mac(mac_str, mac_addr));
+	}
+}
+
 static struct at24_platform_data eeprom_info = {
 	.byte_len	= (256*1024) / 8,
 	.page_size	= 64,
 	.flags		= AT24_FLAG_ADDR16,
+	.setup          = at24_setup,
+};
+
+int dm6446evm_eeprom_read(void *buf, off_t off, size_t count)
+{
+	if (at24_mem_acc)
+		return at24_mem_acc->read(at24_mem_acc, buf, off, count);
+	return -ENODEV;
+}
+EXPORT_SYMBOL(dm6446evm_eeprom_read);
+
+int dm6446evm_eeprom_write(void *buf, off_t off, size_t count)
+{
+	if (at24_mem_acc)
+		return at24_mem_acc->write(at24_mem_acc, buf, off, count);
+	return -ENODEV;
+}
+EXPORT_SYMBOL(dm6446evm_eeprom_write);
+
+/*
+ * MSP430 supports RTC, card detection, input from IR remote, and
+ * a bit more.  It triggers interrupts on GPIO(7) from pressing
+ * buttons on the IR remote, and for card detect switches.
+ */
+static struct i2c_client *dm6446evm_msp;
+
+static int dm6446evm_msp_probe(struct i2c_client *client,
+		const struct i2c_device_id *id)
+{
+	dm6446evm_msp = client;
+	return 0;
+}
+
+static int dm6446evm_msp_remove(struct i2c_client *client)
+{
+	dm6446evm_msp = NULL;
+	return 0;
+}
+
+static const struct i2c_device_id dm6446evm_msp_ids[] = {
+	{ "dm6446evm_msp", 0, },
+	{ /* end of list */ },
+};
+
+static struct i2c_driver dm6446evm_msp_driver = {
+	.driver.name	= "dm6446evm_msp",
+	.id_table	= dm6446evm_msp_ids,
+	.probe		= dm6446evm_msp_probe,
+	.remove		= dm6446evm_msp_remove,
 };
 
+static int dm6444evm_msp430_get_pins(void)
+{
+	static const char txbuf[2] = { 2, 4, };
+	char buf[4];
+	struct i2c_msg msg[2] = {
+		{
+			.addr = dm6446evm_msp->addr,
+			.flags = 0,
+			.len = 2,
+			.buf = (void __force *)txbuf,
+		},
+		{
+			.addr = dm6446evm_msp->addr,
+			.flags = I2C_M_RD,
+			.len = 4,
+			.buf = buf,
+		},
+	};
+	int status;
+
+	if (!dm6446evm_msp)
+		return -ENXIO;
+
+	/* Command 4 == get input state, returns port 2 and port3 data
+	 *   S Addr W [A] len=2 [A] cmd=4 [A]
+	 *   RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
+	 */
+	status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
+	if (status < 0)
+		return status;
+
+	dev_dbg(&dm6446evm_msp->dev,
+		"PINS: %02x %02x %02x %02x\n",
+		buf[0], buf[1], buf[2], buf[3]);
+
+	return (buf[3] << 8) | buf[2];
+}
+
 static struct i2c_board_info __initdata i2c_info[] =  {
+	{
+		I2C_BOARD_INFO("dm6446evm_msp", 0x23),
+	},
 	{
 		I2C_BOARD_INFO("pcf8574", 0x38),
 		.platform_data	= &pcf_data_u2,
@@ -368,7 +567,6 @@ static struct i2c_board_info __initdata i2c_info[] =  {
 	},
 	/* ALSO:
 	 * - tvl320aic33 audio codec (0x1b)
-	 * - msp430 microcontroller (0x23)
 	 * - tvp5146 video decoder (0x5d)
 	 */
 };
@@ -384,51 +582,109 @@ static struct davinci_i2c_platform_data i2c_pdata = {
 static void __init evm_init_i2c(void)
 {
 	davinci_init_i2c(&i2c_pdata);
+	i2c_add_driver(&dm6446evm_msp_driver);
 	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
 }
 
 static struct platform_device *davinci_evm_devices[] __initdata = {
-#if defined(CONFIG_MTD_PHYSMAP) || \
-    defined(CONFIG_MTD_PHYSMAP_MODULE)
-	&davinci_evm_norflash_device,
-#endif
-#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
-    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
-	&ide_dev,
-#endif
+	&davinci_fb_device,
+	&rtc_dev,
+};
+
+static struct davinci_uart_config uart_config __initdata = {
+	.enabled_uarts = (1 << 0),
 };
 
 static void __init
 davinci_evm_map_io(void)
 {
 	davinci_map_common_io();
+	dm644x_init();
 }
 
-static __init void davinci_evm_init(void)
+static int davinci_phy_fixup(struct phy_device *phydev)
 {
-	davinci_psc_init();
+	unsigned int control;
+	/* CRITICAL: Fix for increasing PHY signal drive strength for
+	 * TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
+	 * signal strength was low causing  TX to fail randomly. The
+	 * fix is to Set bit 11 (Increased MII drive strength) of PHY
+	 * register 26 (Digital Config register) on this phy. */
+	control = phy_read(phydev, 26);
+	phy_write(phydev, 26, (control | 0x800));
+	return 0;
+}
 
 #if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
     defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
+#define HAS_ATA 1
+#else
+#define HAS_ATA 0
+#endif
+
 #if defined(CONFIG_MTD_PHYSMAP) || \
     defined(CONFIG_MTD_PHYSMAP_MODULE)
-	printk(KERN_WARNING "WARNING: both IDE and NOR flash are enabled, "
-	       "but share pins.\n\t Disable IDE for NOR support.\n");
+#define HAS_NOR 1
+#else
+#define HAS_NOR 0
 #endif
+
+#if defined(CONFIG_MTD_NAND_DAVINCI) || \
+    defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
+#define HAS_NAND 1
+#else
+#define HAS_NAND 0
 #endif
 
+static __init void davinci_evm_init(void)
+{
+	struct clk *aemif_clk;
+
+	aemif_clk = clk_get(NULL, "aemif");
+	clk_enable(aemif_clk);
+
+	if (HAS_ATA) {
+		if (HAS_NAND || HAS_NOR)
+			pr_warning("WARNING: both IDE and Flash are "
+				"enabled, but they share AEMIF pins.\n"
+				"\tDisable IDE for NAND/NOR support.\n");
+		davinci_cfg_reg(DM644X_HPIEN_DISABLE);
+		davinci_cfg_reg(DM644X_ATAEN);
+		davinci_cfg_reg(DM644X_HDIREN);
+		platform_device_register(&ide_dev);
+	} else if (HAS_NAND || HAS_NOR) {
+		davinci_cfg_reg(DM644X_HPIEN_DISABLE);
+		davinci_cfg_reg(DM644X_ATAEN_DISABLE);
+
+		/* only one device will be jumpered and detected */
+		if (HAS_NAND) {
+			platform_device_register(&davinci_evm_nandflash_device);
+			evm_leds[7].default_trigger = "nand-disk";
+			if (HAS_NOR)
+				pr_warning("WARNING: both NAND and NOR flash "
+					"are enabled; disable one of them.\n");
+		} else if (HAS_NOR)
+			platform_device_register(&davinci_evm_norflash_device);
+	}
+
 	platform_add_devices(davinci_evm_devices,
 			     ARRAY_SIZE(davinci_evm_devices));
 	evm_init_i2c();
+
+	davinci_serial_init(&uart_config);
+
+	/* Register the fixup for PHY on DaVinci */
+	phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
+					davinci_phy_fixup);
+
 }
 
 static __init void davinci_evm_irq_init(void)
 {
-	davinci_init_common_hw();
 	davinci_irq_init();
 }
 
-MACHINE_START(DAVINCI_EVM, "DaVinci EVM")
+MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
 	/* Maintainer: MontaVista Software <source@mvista.com> */
 	.phys_io      = IO_PHYS,
 	.io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,

arch/arm/mach-davinci/clock.c

 /*
- * TI DaVinci clock config file
+ * Clock and PLL control for DaVinci devices
  *
- * Copyright (C) 2006 Texas Instruments.
+ * Copyright (C) 2006-2007 Texas Instruments.
+ * Copyright (C) 2008-2009 Deep Root Systems, LLC
  *
  * 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
@@ -13,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/errno.h>
+#include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
@@ -21,98 +23,50 @@
 #include <mach/hardware.h>
 
 #include <mach/psc.h>
+#include <mach/cputype.h>
 #include "clock.h"
 
-/* PLL/Reset register offsets */
-#define PLLM		0x110
-
 static LIST_HEAD(clocks);
 static DEFINE_MUTEX(clocks_mutex);
 static DEFINE_SPINLOCK(clockfw_lock);
 
-static unsigned int commonrate;
-static unsigned int armrate;
-static unsigned int fixedrate = 27000000;	/* 27 MHZ */
-
-extern void davinci_psc_config(unsigned int domain, unsigned int id, char enable);
-
-/*
- * Returns a clock. Note that we first try to use device id on the bus
- * and clock name. If this fails, we try to use clock name only.
- */
-struct clk *clk_get(struct device *dev, const char *id)
+static unsigned psc_domain(struct clk *clk)
 {
-	struct clk *p, *clk = ERR_PTR(-ENOENT);
-	int idno;
-
-	if (dev == NULL || dev->bus != &platform_bus_type)
-		idno = -1;
-	else
-		idno = to_platform_device(dev)->id;
-
-	mutex_lock(&clocks_mutex);
-
-	list_for_each_entry(p, &clocks, node) {
-		if (p->id == idno &&
-		    strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
-			clk = p;
-			goto found;
-		}
-	}
-
-	list_for_each_entry(p, &clocks, node) {
-		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
-			clk = p;
-			break;
-		}
-	}
-
-found:
-	mutex_unlock(&clocks_mutex);
-
-	return clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-	if (clk && !IS_ERR(clk))
-		module_put(clk->owner);
+	return (clk->flags & PSC_DSP)
+		? DAVINCI_GPSC_DSPDOMAIN
+		: DAVINCI_GPSC_ARMDOMAIN;
 }
-EXPORT_SYMBOL(clk_put);
 
-static int __clk_enable(struct clk *clk)
+static void __clk_enable(struct clk *clk)
 {
-	if (clk->flags & ALWAYS_ENABLED)
-		return 0;
-
-	davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, clk->lpsc, 1);
-	return 0;
+	if (clk->parent)
+		__clk_enable(clk->parent);
+	if (clk->usecount++ == 0 && (clk->flags & CLK_PSC))
+		davinci_psc_config(psc_domain(clk), clk->lpsc, 1);
 }
 
 static void __clk_disable(struct clk *clk)
 {
-	if (clk->usecount)
+	if (WARN_ON(clk->usecount == 0))
 		return;
-
-	davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, clk->lpsc, 0);
+	if (--clk->usecount == 0 && !(clk->flags & CLK_PLL))
+		davinci_psc_config(psc_domain(clk), clk->lpsc, 0);
+	if (clk->parent)
+		__clk_disable(clk->parent);
 }
 
 int clk_enable(struct clk *clk)
 {
 	unsigned long flags;
-	int ret = 0;
 
 	if (clk == NULL || IS_ERR(clk))
 		return -EINVAL;
 
-	if (clk->usecount++ == 0) {
 	spin_lock_irqsave(&clockfw_lock, flags);
-		ret = __clk_enable(clk);
+	__clk_enable(clk);
 	spin_unlock_irqrestore(&clockfw_lock, flags);
-	}
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL(clk_enable);
 
@@ -123,11 +77,9 @@ void clk_disable(struct clk *clk)
 	if (clk == NULL || IS_ERR(clk))
 		return;
 
-	if (clk->usecount > 0 && !(--clk->usecount)) {
 	spin_lock_irqsave(&clockfw_lock, flags);
 	__clk_disable(clk);
 	spin_unlock_irqrestore(&clockfw_lock, flags);
-	}
 }
 EXPORT_SYMBOL(clk_disable);
 
@@ -136,7 +88,7 @@ unsigned long clk_get_rate(struct clk *clk)
 	if (clk == NULL || IS_ERR(clk))
 		return -EINVAL;
 
-	return *(clk->rate);
+	return clk->rate;
 }
 EXPORT_SYMBOL(clk_get_rate);
 
@@ -145,7 +97,7 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
 	if (clk == NULL || IS_ERR(clk))
 		return -EINVAL;
 
-	return *(clk->rate);
+	return clk->rate;
 }
 EXPORT_SYMBOL(clk_round_rate);
 
@@ -164,10 +116,23 @@ int clk_register(struct clk *clk)
 	if (clk == NULL || IS_ERR(clk))
 		return -EINVAL;
 
+	if (WARN(clk->parent && !clk->parent->rate,
+			"CLK: %s parent %s has no rate!\n",
+			clk->name, clk->parent->name))
+		return -EINVAL;
+
 	mutex_lock(&clocks_mutex);
-	list_add(&clk->node, &clocks);
+	list_add_tail(&clk->node, &clocks);
 	mutex_unlock(&clocks_mutex);
 
+	/* If rate is already set, use it */
+	if (clk->rate)
+		return 0;
+
+	/* Otherwise, default to parent rate */
+	if (clk->parent)
+		clk->rate = clk->parent->rate;
+
 	return 0;
 }
 EXPORT_SYMBOL(clk_register);
@@ -183,84 +148,150 @@ void clk_unregister(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_unregister);
 
-static struct clk davinci_clks[] = {
-	{
-		.name = "ARMCLK",
-		.rate = &armrate,
-		.lpsc = -1,
-		.flags = ALWAYS_ENABLED,
-	},
-	{
-		.name = "UART",
-		.rate = &fixedrate,
-		.lpsc = DAVINCI_LPSC_UART0,
-	},
-	{
-		.name = "EMACCLK",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_EMAC_WRAPPER,
-	},
-	{
-		.name = "I2CCLK",
-		.rate = &fixedrate,
-		.lpsc = DAVINCI_LPSC_I2C,
-	},
-	{
-		.name = "IDECLK",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_ATA,
-	},
-	{
-		.name = "McBSPCLK",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_McBSP,
-	},
-	{
-		.name = "MMCSDCLK",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_MMC_SD,
-	},
-	{
-		.name = "SPICLK",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_SPI,
-	},
-	{
-		.name = "gpio",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_GPIO,
-	},
-	{
-		.name = "usb",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_USB,
-	},
-	{
-		.name = "AEMIFCLK",
-		.rate = &commonrate,
-		.lpsc = DAVINCI_LPSC_AEMIF,
-		.usecount = 1,
+#ifdef CONFIG_DAVINCI_RESET_CLOCKS
+/*
+ * Disable any unused clocks left on by the bootloader
+ */
+static int __init clk_disable_unused(void)
+{
+	struct clk *ck;
+
+	spin_lock_irq(&clockfw_lock);
+	list_for_each_entry(ck, &clocks, node) {
+		if (ck->usecount > 0)
+			continue;
+		if (!(ck->flags & CLK_PSC))
+			continue;
+
+		/* ignore if in Disabled or SwRstDisable states */
+		if (!davinci_psc_is_clk_active(ck->lpsc))
+			continue;
+
+		pr_info("Clocks: disable unused %s\n", ck->name);
+		davinci_psc_config(psc_domain(ck), ck->lpsc, 0);
 	}
-};
+	spin_unlock_irq(&clockfw_lock);
 
-int __init davinci_clk_init(void)
+	return 0;
+}
+late_initcall(clk_disable_unused);
+#endif
+
+static void clk_sysclk_recalc(struct clk *clk)
 {
-	struct clk *clkp;
-	int count = 0;
-	u32 pll_mult;
-
-	pll_mult = davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLM);
-	commonrate = ((pll_mult + 1) * 27000000) / 6;
-	armrate = ((pll_mult + 1) * 27000000) / 2;
-
-	for (clkp = davinci_clks; count < ARRAY_SIZE(davinci_clks);
-	     count++, clkp++) {
-		clk_register(clkp);
-
-		/* Turn on clocks that have been enabled in the
-		 * table above */
-		if (clkp->usecount)
-			clk_enable(clkp);
+	u32 v, plldiv;
+	struct pll_data *pll;
+
+	/* If this is the PLL base clock, no more calculations needed */
+	if (clk->pll_data)
+		return;
+
+	if (WARN_ON(!clk->parent))
+		return;
+
+	clk->rate = clk->parent->rate;
+
+	/* Otherwise, the parent must be a PLL */
+	if (WARN_ON(!clk->parent->pll_data))
+		return;
+
+	pll = clk->parent->pll_data;
+
+	/* If pre-PLL, source clock is before the multiplier and divider(s) */
+	if (clk->flags & PRE_PLL)
+		clk->rate = pll->input_rate;
+
+	if (!clk->div_reg)
+		return;
+
+	v = __raw_readl(pll->base + clk->div_reg);
+	if (v & PLLDIV_EN) {
+		plldiv = (v & PLLDIV_RATIO_MASK) + 1;
+		if (plldiv)
+			clk->rate /= plldiv;
+	}
+}
+
+static void __init clk_pll_init(struct clk *clk)
+{
+	u32 ctrl, mult = 1, prediv = 1, postdiv = 1;
+	u8 bypass;
+	struct pll_data *pll = clk->pll_data;
+
+	pll->base = IO_ADDRESS(pll->phys_base);
+	ctrl = __raw_readl(pll->base + PLLCTL);
+	clk->rate = pll->input_rate = clk->parent->rate;
+
+	if (ctrl & PLLCTL_PLLEN) {
+		bypass = 0;
+		mult = __raw_readl(pll->base + PLLM);
+		mult = (mult & PLLM_PLLM_MASK) + 1;
+	} else
+		bypass = 1;
+
+	if (pll->flags & PLL_HAS_PREDIV) {
+		prediv = __raw_readl(pll->base + PREDIV);
+		if (prediv & PLLDIV_EN)
+			prediv = (prediv & PLLDIV_RATIO_MASK) + 1;
+		else
+			prediv = 1;
+	}
+
+	/* pre-divider is fixed, but (some?) chips won't report that */
+	if (cpu_is_davinci_dm355() && pll->num == 1)
+		prediv = 8;
+
+	if (pll->flags & PLL_HAS_POSTDIV) {
+		postdiv = __raw_readl(pll->base + POSTDIV);
+		if (postdiv & PLLDIV_EN)
+			postdiv = (postdiv & PLLDIV_RATIO_MASK) + 1;
+		else
+			postdiv = 1;
+	}
+
+	if (!bypass) {
+		clk->rate /= prediv;
+		clk->rate *= mult;
+		clk->rate /= postdiv;
+	}
+
+	pr_debug("PLL%d: input = %lu MHz [ ",
+		 pll->num, clk->parent->rate / 1000000);
+	if (bypass)
+		pr_debug("bypass ");
+	if (prediv > 1)
+		pr_debug("/ %d ", prediv);
+	if (mult > 1)
+		pr_debug("* %d ", mult);
+	if (postdiv > 1)
+		pr_debug("/ %d ", postdiv);
+	pr_debug("] --> %lu MHz output.\n", clk->rate / 1000000);
+}
+
+int __init davinci_clk_init(struct davinci_clk *clocks)
+  {
+	struct davinci_clk *c;
+	struct clk *clk;
+
+	for (c = clocks; c->lk.clk; c++) {
+		clk = c->lk.clk;
+
+		if (clk->pll_data)
+			clk_pll_init(clk);
+
+		/* Calculate rates for PLL-derived clocks */
+		else if (clk->flags & CLK_PLL)
+			clk_sysclk_recalc(clk);
+
+		if (clk->lpsc)
+			clk->flags |= CLK_PSC;
+
+		clkdev_add(&c->lk);
+		clk_register(clk);
+
+		/* Turn on clocks that Linux doesn't otherwise manage */
+		if (clk->flags & ALWAYS_ENABLED)
+			clk_enable(clk);
 	}
 
 	return 0;
@@ -285,12 +316,52 @@ static void davinci_ck_stop(struct seq_file *m, void *v)
 {
 }
 
-static int davinci_ck_show(struct seq_file *m, void *v)
+#define CLKNAME_MAX	10		/* longest clock name */
+#define NEST_DELTA	2
+#define NEST_MAX	4
+
+static void
+dump_clock(struct seq_file *s, unsigned nest, struct clk *parent)
 {
-	struct clk *cp;
+	char		*state;
+	char		buf[CLKNAME_MAX + NEST_DELTA * NEST_MAX];
+	struct clk	*clk;
+	unsigned	i;
+
+	if (parent->flags & CLK_PLL)
+		state = "pll";
+	else if (parent->flags & CLK_PSC)
+		state = "psc";
+	else
+		state = "";
+
+	/* <nest spaces> name <pad to end> */
+	memset(buf, ' ', sizeof(buf) - 1);
+	buf[sizeof(buf) - 1] = 0;
+	i = strlen(parent->name);
+	memcpy(buf + nest, parent->name,
+			min(i, (unsigned)(sizeof(buf) - 1 - nest)));
+
+	seq_printf(s, "%s users=%2d %-3s %9ld Hz\n",
+		   buf, parent->usecount, state, clk_get_rate(parent));
+	/* REVISIT show device associations too */
+
+	/* cost is now small, but not linear... */
+	list_for_each_entry(clk, &clocks, node) {
+		if (clk->parent == parent)
+			dump_clock(s, nest + NEST_DELTA, clk);
+	}
+}
 
-	list_for_each_entry(cp, &clocks, node)
-		seq_printf(m,"%s %d %d\n", cp->name, *(cp->rate), cp->usecount);
+static int davinci_ck_show(struct seq_file *m, void *v)
+{
+	/* Show clock tree; we know the main oscillator is first.
+	 * We trust nonzero usecounts equate to PSC enables...
+	 */
+	mutex_lock(&clocks_mutex);
+	if (!list_empty(&clocks))
+		dump_clock(m, 0, list_first_entry(&clocks, struct clk, node));
+	mutex_unlock(&clocks_mutex);
 
 	return 0;
 }

arch/arm/mach-davinci/clock.h

 /*
  * TI DaVinci clock definitions
  *
- * Copyright (C) 2006 Texas Instruments.
+ * Copyright (C) 2006-2007 Texas Instruments.
+ * Copyright (C) 2008-2009 Deep Root Systems, LLC
  *
  * 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
@@ -11,23 +12,85 @@
 #ifndef __ARCH_ARM_DAVINCI_CLOCK_H
 #define __ARCH_ARM_DAVINCI_CLOCK_H
 
+#include <linux/list.h>
+#include <asm/clkdev.h>
+
+#define DAVINCI_PLL1_BASE 0x01c40800
+#define DAVINCI_PLL2_BASE 0x01c40c00
+#define MAX_PLL 2
+
+/* PLL/Reset register offsets */
+#define PLLCTL          0x100
+#define PLLCTL_PLLEN    BIT(0)
+#define PLLCTL_CLKMODE  BIT(8)
+
+#define PLLM		0x110
+#define PLLM_PLLM_MASK  0xff
+
+#define PREDIV          0x114
+#define PLLDIV1         0x118
+#define PLLDIV2         0x11c
+#define PLLDIV3         0x120
+#define POSTDIV         0x128
+#define BPDIV           0x12c
+#define PLLCMD		0x138
+#define PLLSTAT		0x13c
+#define PLLALNCTL	0x140
+#define PLLDCHANGE	0x144
+#define PLLCKEN		0x148
+#define PLLCKSTAT	0x14c
+#define PLLSYSTAT	0x150
+#define PLLDIV4         0x160
+#define PLLDIV5         0x164
+#define PLLDIV6         0x168
+#define PLLDIV7         0x16c
+#define PLLDIV8         0x170
+#define PLLDIV9         0x174
+#define PLLDIV_EN       BIT(15)
+#define PLLDIV_RATIO_MASK 0x1f
+
+struct pll_data {
+	u32 phys_base;
+	void __iomem *base;
+	u32 num;
+	u32 flags;
+	u32 input_rate;
+};
+#define PLL_HAS_PREDIV          0x01
+#define PLL_HAS_POSTDIV         0x02
+
 struct clk {
 	struct list_head	node;
 	struct module		*owner;
 	const char		*name;
-	unsigned int		*rate;
-	int			id;
-	__s8			usecount;
-	__u8			flags;
-	__u8			lpsc;
+	unsigned long		rate;
+	u8			usecount;
+	u8			flags;
+	u8			lpsc;
+	struct clk              *parent;
+	struct pll_data         *pll_data;
+	u32                     div_reg;
 };
 
 /* Clock flags */
-#define RATE_CKCTL		1
-#define RATE_FIXED		2
-#define RATE_PROPAGATES		4
-#define VIRTUAL_CLOCK		8
-#define ALWAYS_ENABLED		16
-#define ENABLE_REG_32BIT	32
+#define ALWAYS_ENABLED		BIT(1)
+#define CLK_PSC                 BIT(2)
+#define PSC_DSP                 BIT(3) /* PSC uses DSP domain, not ARM */
+#define CLK_PLL			BIT(4) /* PLL-derived clock */
+#define PRE_PLL                 BIT(5) /* source is before PLL mult/div */
+
+struct davinci_clk {
+	struct clk_lookup lk;
+};
+
+#define CLK(dev, con, ck) 		\
+	{				\
+		.lk = {			\
+			.dev_id = dev,	\
+			.con_id = con,	\
+			.clk = ck,	\
+		},			\
+	}
 
+int davinci_clk_init(struct davinci_clk *clocks);
 #endif

arch/arm/mach-davinci/devices.c

@@ -21,6 +21,10 @@
 #include <mach/hardware.h>
 #include <mach/i2c.h>
 #include <mach/irqs.h>
+#include <mach/cputype.h>
+#include <mach/mux.h>
+
+#define DAVINCI_I2C_BASE	     0x01C21000
 
 static struct resource i2c_resources[] = {
 	{
@@ -43,6 +47,9 @@ static struct platform_device davinci_i2c_device = {
 
 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
 {
+	if (cpu_is_davinci_dm644x())
+		davinci_cfg_reg(DM644X_I2C);
+
 	davinci_i2c_device.dev.platform_data = pdata;
 	(void) platform_device_register(&davinci_i2c_device);
 }

arch/arm/mach-davinci/dm644x.c

+/*
+ * TI DaVinci DM644x chip specific setup
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+
+#include <mach/dm644x.h>
+#include <mach/clock.h>
+#include <mach/cputype.h>
+#include <mach/edma.h>
+#include <mach/irqs.h>
+#include <mach/psc.h>
+#include <mach/mux.h>
+
+#include "clock.h"
+#include "mux.h"
+
+/*
+ * Device specific clocks
+ */
+#define DM644X_REF_FREQ		27000000
+
+static struct pll_data pll1_data = {
+	.num       = 1,
+	.phys_base = DAVINCI_PLL1_BASE,
+};
+
+static struct pll_data pll2_data = {
+	.num       = 2,
+	.phys_base = DAVINCI_PLL2_BASE,
+};
+
+static struct clk ref_clk = {
+	.name = "ref_clk",
+	.rate = DM644X_REF_FREQ,
+};
+
+static struct clk pll1_clk = {
+	.name = "pll1",
+	.parent = &ref_clk,
+	.pll_data = &pll1_data,
+	.flags = CLK_PLL,
+};
+
+static struct clk pll1_sysclk1 = {
+	.name = "pll1_sysclk1",
+	.parent = &pll1_clk,
+	.flags = CLK_PLL,
+	.div_reg = PLLDIV1,
+};
+
+static struct clk pll1_sysclk2 = {
+	.name = "pll1_sysclk2",
+	.parent = &pll1_clk,
+	.flags = CLK_PLL,
+	.div_reg = PLLDIV2,
+};
+
+static struct clk pll1_sysclk3 = {
+	.name = "pll1_sysclk3",
+	.parent = &pll1_clk,
+	.flags = CLK_PLL,
+	.div_reg = PLLDIV3,
+};
+
+static struct clk pll1_sysclk5 = {
+	.name = "pll1_sysclk5",
+	.parent = &pll1_clk,
+	.flags = CLK_PLL,
+	.div_reg = PLLDIV5,
+};
+
+static struct clk pll1_aux_clk = {
+	.name = "pll1_aux_clk",
+	.parent = &pll1_clk,
+	.flags = CLK_PLL | PRE_PLL,
+};
+
+static struct clk pll1_sysclkbp = {
+	.name = "pll1_sysclkbp",
+	.parent = &pll1_clk,
+	.flags = CLK_PLL | PRE_PLL,
+	.div_reg = BPDIV
+};
+
+static struct clk pll2_clk = {
+	.name = "pll2",
+	.parent = &ref_clk,
+	.pll_data = &pll2_data,
+	.flags = CLK_PLL,
+};
+
+static struct clk pll2_sysclk1 = {
+	.name = "pll2_sysclk1",
+	.parent = &pll2_clk,
+	.flags = CLK_PLL,
+	.div_reg = PLLDIV1,
+};
+
+static struct clk pll2_sysclk2 = {
+	.name = "pll2_sysclk2",
+	.parent = &pll2_clk,
+	.flags = CLK_PLL,
+	.div_reg = PLLDIV2,
+};
+
+static struct clk pll2_sysclkbp = {
+	.name = "pll2_sysclkbp",
+	.parent = &pll2_clk,
+	.flags = CLK_PLL | PRE_PLL,
+	.div_reg = BPDIV
+};
+
+static struct clk dsp_clk = {
+	.name = "dsp",
+	.parent = &pll1_sysclk1,
+	.lpsc = DAVINCI_LPSC_GEM,
+	.flags = PSC_DSP,
+	.usecount = 1,			/* REVISIT how to disable? */
+};
+
+static struct clk arm_clk = {
+	.name = "arm",
+	.parent = &pll1_sysclk2,
+	.lpsc = DAVINCI_LPSC_ARM,
+	.flags = ALWAYS_ENABLED,
+};
+
+static struct clk vicp_clk = {
+	.name = "vicp",
+	.parent = &pll1_sysclk2,
+	.lpsc = DAVINCI_LPSC_IMCOP,
+	.flags = PSC_DSP,
+	.usecount = 1,			/* REVISIT how to disable? */
+};
+
+static struct clk vpss_master_clk = {
+	.name = "vpss_master",
+	.parent = &pll1_sysclk3,
+	.lpsc = DAVINCI_LPSC_VPSSMSTR,
+	.flags = CLK_PSC,
+};
+
+static struct clk vpss_slave_clk = {
+	.name = "vpss_slave",
+	.parent = &pll1_sysclk3,
+	.lpsc = DAVINCI_LPSC_VPSSSLV,
+};
+
+static struct clk uart0_clk = {
+	.name = "uart0",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_UART0,
+};
+
+static struct clk uart1_clk = {
+	.name = "uart1",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_UART1,
+};
+
+static struct clk uart2_clk = {
+	.name = "uart2",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_UART2,
+};
+
+static struct clk emac_clk = {
+	.name = "emac",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_EMAC_WRAPPER,
+};
+
+static struct clk i2c_clk = {
+	.name = "i2c",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_I2C,
+};
+
+static struct clk ide_clk = {
+	.name = "ide",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_ATA,
+};
+
+static struct clk asp_clk = {
+	.name = "asp0",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_McBSP,
+};
+
+static struct clk mmcsd_clk = {
+	.name = "mmcsd",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_MMC_SD,
+};
+
+static struct clk spi_clk = {
+	.name = "spi",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_SPI,
+};
+
+static struct clk gpio_clk = {
+	.name = "gpio",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_GPIO,
+};
+
+static struct clk usb_clk = {
+	.name = "usb",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_USB,
+};
+
+static struct clk vlynq_clk = {
+	.name = "vlynq",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_VLYNQ,
+};
+
+static struct clk aemif_clk = {
+	.name = "aemif",
+	.parent = &pll1_sysclk5,
+	.lpsc = DAVINCI_LPSC_AEMIF,
+};
+
+static struct clk pwm0_clk = {
+	.name = "pwm0",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_PWM0,
+};
+
+static struct clk pwm1_clk = {
+	.name = "pwm1",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_PWM1,
+};
+
+static struct clk pwm2_clk = {
+	.name = "pwm2",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_PWM2,
+};
+
+static struct clk timer0_clk = {
+	.name = "timer0",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_TIMER0,
+};
+
+static struct clk timer1_clk = {
+	.name = "timer1",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_TIMER1,
+};
+
+static struct clk timer2_clk = {
+	.name = "timer2",
+	.parent = &pll1_aux_clk,
+	.lpsc = DAVINCI_LPSC_TIMER2,
+	.usecount = 1,              /* REVISIT: why cant' this be disabled? */
+};
+
+struct davinci_clk dm644x_clks[] = {
+	CLK(NULL, "ref", &ref_clk),
+	CLK(NULL, "pll1", &pll1_clk),
+	CLK(NULL, "pll1_sysclk1", &pll1_sysclk1),
+	CLK(NULL, "pll1_sysclk2", &pll1_sysclk2),
+	CLK(NULL, "pll1_sysclk3", &pll1_sysclk3),
+	CLK(NULL, "pll1_sysclk5", &pll1_sysclk5),
+	CLK(NULL, "pll1_aux", &pll1_aux_clk),
+	CLK(NULL, "pll1_sysclkbp", &pll1_sysclkbp),
+	CLK(NULL, "pll2", &pll2_clk),
+	CLK(NULL, "pll2_sysclk1", &pll2_sysclk1),
+	CLK(NULL, "pll2_sysclk2", &pll2_sysclk2),
+	CLK(NULL, "pll2_sysclkbp", &pll2_sysclkbp),
+	CLK(NULL, "dsp", &dsp_clk),
+	CLK(NULL, "arm", &arm_clk),
+	CLK(NULL, "vicp", &vicp_clk),
+	CLK(NULL, "vpss_master", &vpss_master_clk),
+	CLK(NULL, "vpss_slave", &vpss_slave_clk),
+	CLK(NULL, "arm", &arm_clk),
+	CLK(NULL, "uart0", &uart0_clk),
+	CLK(NULL, "uart1", &uart1_clk),
+	CLK(NULL, "uart2", &uart2_clk),
+	CLK("davinci_emac.1", NULL, &emac_clk),
+	CLK("i2c_davinci.1", NULL, &i2c_clk),
+	CLK("palm_bk3710", NULL, &ide_clk),
+	CLK("soc-audio.0", NULL, &asp_clk),
+	CLK("davinci_mmc.0", NULL, &mmcsd_clk),
+	CLK(NULL, "spi", &spi_clk),
+	CLK(NULL, "gpio", &gpio_clk),
+	CLK(NULL, "usb", &usb_clk),
+	CLK(NULL, "vlynq", &vlynq_clk),
+	CLK(NULL, "aemif", &aemif_clk),
+	CLK(NULL, "pwm0", &pwm0_clk),
+	CLK(NULL, "pwm1", &pwm1_clk),
+	CLK(NULL, "pwm2", &pwm2_clk),
+	CLK(NULL, "timer0", &timer0_clk),
+	CLK(NULL, "timer1", &timer1_clk),
+	CLK("watchdog", NULL, &timer2_clk),
+	CLK(NULL, NULL, NULL),
+};
+
+#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
+
+static struct resource dm644x_emac_resources[] = {
+	{
+		.start	= DM644X_EMAC_BASE,
+		.end	= DM644X_EMAC_BASE + 0x47ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start = IRQ_EMACINT,
+		.end   = IRQ_EMACINT,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device dm644x_emac_device = {
+       .name		= "davinci_emac",
+       .id		= 1,
+       .num_resources	= ARRAY_SIZE(dm644x_emac_resources),
+       .resource	= dm644x_emac_resources,
+};
+
+#endif
+
+/*
+ * Device specific mux setup
+ *
+ *	soc	description	mux  mode   mode  mux	 dbg
+ *				reg  offset mask  mode
+ */
+static const struct mux_config dm644x_pins[] = {
+MUX_CFG(DM644X, HDIREN,		0,   16,    1,	  1,	 true)
+MUX_CFG(DM644X, ATAEN,		0,   17,    1,	  1,	 true)
+MUX_CFG(DM644X, ATAEN_DISABLE,	0,   17,    1,	  0,	 true)
+
+MUX_CFG(DM644X, HPIEN_DISABLE,	0,   29,    1,	  0,	 true)
+
+MUX_CFG(DM644X, AEAW,		0,   0,     31,	  31,	 true)
+
+MUX_CFG(DM644X, MSTK,		1,   9,     1,	  0,	 false)
+
+MUX_CFG(DM644X, I2C,		1,   7,     1,	  1,	 false)
+
+MUX_CFG(DM644X, MCBSP,		1,   10,    1,	  1,	 false)
+
+MUX_CFG(DM644X, UART1,		1,   1,     1,	  1,	 true)
+MUX_CFG(DM644X, UART2,		1,   2,     1,	  1,	 true)
+
+MUX_CFG(DM644X, PWM0,		1,   4,     1,	  1,	 false)
+
+MUX_CFG(DM644X, PWM1,		1,   5,     1,	  1,	 false)
+
+MUX_CFG(DM644X, PWM2,		1,   6,     1,	  1,	 false)
+
+MUX_CFG(DM644X, VLYNQEN,	0,   15,    1,	  1,	 false)
+MUX_CFG(DM644X, VLSCREN,	0,   14,    1,	  1,	 false)
+MUX_CFG(DM644X, VLYNQWD,	0,   12,    3,	  3,	 false)
+
+MUX_CFG(DM644X, EMACEN,		0,   31,    1,	  1,	 true)
+
+MUX_CFG(DM644X, GPIO3V,		0,   31,    1,	  0,	 true)
+
+MUX_CFG(DM644X, GPIO0,		0,   24,    1,	  0,	 true)
+MUX_CFG(DM644X, GPIO3,		0,   25,    1,	  0,	 false)
+MUX_CFG(DM644X, GPIO43_44,	1,   7,     1,	  0,	 false)
+MUX_CFG(DM644X, GPIO46_47,	0,   22,    1,	  0,	 true)
+
+MUX_CFG(DM644X, RGB666,		0,   22,    1,	  1,	 true)
+
+MUX_CFG(DM644X, LOEEN,		0,   24,    1,	  1,	 true)
+MUX_CFG(DM644X, LFLDEN,		0,   25,    1,	  1,	 false)
+};
+
+
+/*----------------------------------------------------------------------*/
+
+static const s8 dma_chan_dm644x_no_event[] = {
+	 0,  1, 12, 13, 14,
+	15, 25, 30, 31, 45,
+	46, 47, 55, 56, 57,
+	58, 59, 60, 61, 62,
+	63,
+	-1
+};
+
+static struct edma_soc_info dm644x_edma_info = {
+	.n_channel	= 64,
+	.n_region	= 4,
+	.n_slot		= 128,
+	.n_tc		= 2,
+	.noevent	= dma_chan_dm644x_no_event,
+};
+
+static struct resource edma_resources[] = {
+	{
+		.name	= "edma_cc",
+		.start	= 0x01c00000,
+		.end	= 0x01c00000 + SZ_64K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "edma_tc0",
+		.start	= 0x01c10000,
+		.end	= 0x01c10000 + SZ_1K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "edma_tc1",
+		.start	= 0x01c10400,
+		.end	= 0x01c10400 + SZ_1K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= IRQ_CCINT0,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= IRQ_CCERRINT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	/* not using TC*_ERR */
+};
+
+static struct platform_device dm644x_edma_device = {
+	.name			= "edma",
+	.id			= -1,
+	.dev.platform_data	= &dm644x_edma_info,
+	.num_resources		= ARRAY_SIZE(edma_resources),
+	.resource		= edma_resources,
+};
+
+/*----------------------------------------------------------------------*/
+void __init dm644x_init(void)
+{
+	davinci_clk_init(dm644x_clks);
+	davinci_mux_register(dm644x_pins, ARRAY_SIZE(dm644x_pins));
+}
+
+static int __init dm644x_init_devices(void)
+{
+	if (!cpu_is_davinci_dm644x())
+		return 0;
+
+	platform_device_register(&dm644x_edma_device);
+	return 0;
+}
+postcore_initcall(dm644x_init_devices);

arch/arm/mach-davinci/gpio.c

@@ -20,6 +20,7 @@
 #include <linux/irq.h>
 #include <linux/bitops.h>
 
+#include <mach/cputype.h>
 #include <mach/irqs.h>
 #include <mach/hardware.h>
 #include <mach/gpio.h>
@@ -36,9 +37,10 @@ struct davinci_gpio {
 
 static struct davinci_gpio chips[DIV_ROUND_UP(DAVINCI_N_GPIO, 32)];
 
+static unsigned __initdata ngpio;
 
 /* create a non-inlined version */
-static struct gpio_controller *__iomem __init gpio2controller(unsigned gpio)
+static struct gpio_controller __iomem * __init gpio2controller(unsigned gpio)
 {
 	return __gpio_to_controller(gpio);
 }
@@ -114,9 +116,30 @@ static int __init davinci_gpio_setup(void)
 {
 	int i, base;
 
-	for (i = 0, base = 0;
-			i < ARRAY_SIZE(chips);
-			i++, base += 32) {
+	/* The gpio banks conceptually expose a segmented bitmap,
+	 * and "ngpio" is one more than the largest zero-based
+	 * bit index that's valid.
+	 */
+	if (cpu_is_davinci_dm355()) {		/* or dm335() */
+		ngpio = 104;
+	} else if (cpu_is_davinci_dm644x()) {	/* or dm337() */
+		ngpio = 71;
+	} else if (cpu_is_davinci_dm646x()) {
+		/* NOTE:  each bank has several "reserved" bits,
+		 * unusable as GPIOs.  Only 33 of the GPIO numbers
+		 * are usable, and we're not rejecting the others.
+		 */
+		ngpio = 43;
+	} else {
+		/* if cpu_is_davinci_dm643x() ngpio = 111 */
+		pr_err("GPIO setup:  how many GPIOs?\n");
+		return -EINVAL;
+	}
+
+	if (WARN_ON(DAVINCI_N_GPIO < ngpio))
+		ngpio = DAVINCI_N_GPIO;
+
+	for (i = 0, base = 0; base < ngpio; i++, base += 32) {
 		chips[i].chip.label = "DaVinci";
 
 		chips[i].chip.direction_input = davinci_direction_in;
@@ -125,7 +148,7 @@ static int __init davinci_gpio_setup(void)
 		chips[i].chip.set = davinci_gpio_set;
 
 		chips[i].chip.base = base;
-		chips[i].chip.ngpio = DAVINCI_N_GPIO - base;
+		chips[i].chip.ngpio = ngpio - base;
 		if (chips[i].chip.ngpio > 32)
 			chips[i].chip.ngpio = 32;
 
@@ -143,11 +166,11 @@ pure_initcall(davinci_gpio_setup);
  * We expect irqs will normally be set up as input pins, but they can also be
  * used as output pins ... which is convenient for testing.
  *
- * NOTE:  GPIO0..GPIO7 also have direct INTC hookups, which work in addition
- * to their GPIOBNK0 irq (but with a bit less overhead).  But we don't have
- * a good way to hook those up ...
+ * NOTE:  The first few GPIOs also have direct INTC hookups in addition
+ * to their GPIOBNK0 irq, with a bit less overhead but less flexibility
+ * on triggering (e.g. no edge options).  We don't try to use those.
  *
- * All those INTC hookups (GPIO0..GPIO7 plus five IRQ banks) can also
+ * All those INTC hookups (direct, plus several IRQ banks) can also
  * serve as EDMA event triggers.
  */
 
@@ -235,29 +258,42 @@ gpio_irq_handler(unsigned irq, struct irq_desc *desc)
 }
 
 /*
- * NOTE:  for suspend/resume, probably best to make a sysdev (and class)
- * with its suspend/resume calls hooking into the results of the set_wake()
+ * NOTE:  for suspend/resume, probably best to make a platform_device with
+ * suspend_late/resume_resume calls hooking into results of the set_wake()
  * calls ... so if no gpios are wakeup events the clock can be disabled,
  * with outputs left at previously set levels, and so that VDD3P3V.IOPWDN0
- * can be set appropriately for GPIOV33 pins.
+ * (dm6446) can be set appropriately for GPIOV33 pins.
  */
 
 static int __init davinci_gpio_irq_setup(void)
 {
 	unsigned	gpio, irq, bank;
+	unsigned	bank_irq;
 	struct clk	*clk;
+	u32		binten = 0;
+
+	if (cpu_is_davinci_dm355()) {		/* or dm335() */
+		bank_irq = IRQ_DM355_GPIOBNK0;
+	} else if (cpu_is_davinci_dm644x()) {
+		bank_irq = IRQ_GPIOBNK0;
+	} else if (cpu_is_davinci_dm646x()) {
+		bank_irq = IRQ_DM646X_GPIOBNK0;
+	} else {
+		printk(KERN_ERR "Don't know first GPIO bank IRQ.\n");
+		return -EINVAL;
+	}
 
 	clk = clk_get(NULL, "gpio");
 	if (IS_ERR(clk)) {
 		printk(KERN_ERR "Error %ld getting gpio clock?\n",
 		       PTR_ERR(clk));
-		return 0;
+		return PTR_ERR(clk);
 	}
-
 	clk_enable(clk);
 
-	for (gpio = 0, irq = gpio_to_irq(0), bank = IRQ_GPIOBNK0;
-	     gpio < DAVINCI_N_GPIO; bank++) {
+	for (gpio = 0, irq = gpio_to_irq(0), bank = 0;
+			gpio < ngpio;
+			bank++, bank_irq++) {
 		struct gpio_controller	*__iomem g = gpio2controller(gpio);
 		unsigned		i;
 
@@ -265,28 +301,28 @@ static int __init davinci_gpio_irq_setup(void)
 		__raw_writel(~0, &g->clr_rising);
 
 		/* set up all irqs in this bank */
-		set_irq_chained_handler(bank, gpio_irq_handler);
-		set_irq_chip_data(bank, g);
-		set_irq_data(bank, (void *)irq);
+		set_irq_chained_handler(bank_irq, gpio_irq_handler);
+		set_irq_chip_data(bank_irq, g);
+		set_irq_data(bank_irq, (void *)irq);
 
-		for (i = 0; i < 16 && gpio < DAVINCI_N_GPIO;
-		     i++, irq++, gpio++) {
+		for (i = 0; i < 16 && gpio < ngpio; i++, irq++, gpio++) {
 			set_irq_chip(irq, &gpio_irqchip);
 			set_irq_chip_data(irq, g);
 			set_irq_handler(irq, handle_simple_irq);
 			set_irq_flags(irq, IRQF_VALID);
 		}
+
+		binten |= BIT(bank);
 	}
 
 	/* BINTEN -- per-bank interrupt enable. genirq would also let these
 	 * bits be set/cleared dynamically.
 	 */
-	__raw_writel(0x1f, (void *__iomem)
+	__raw_writel(binten, (void *__iomem)
 		     IO_ADDRESS(DAVINCI_GPIO_BASE + 0x08));
 
 	printk(KERN_INFO "DaVinci: %d gpio irqs\n", irq - gpio_to_irq(0));
 
 	return 0;
 }
-
 arch_initcall(davinci_gpio_irq_setup);

arch/arm/mach-davinci/id.c

@@ -15,7 +15,9 @@
 #include <linux/init.h>
 #include <linux/io.h>
 
-#define JTAG_ID_BASE		0x01c40028
+#define JTAG_ID_BASE		IO_ADDRESS(0x01c40028)
+
+static unsigned int davinci_revision;
 
 struct davinci_id {
 	u8	variant;	/* JTAG ID bits 31:28 */
@@ -33,6 +35,20 @@ static struct davinci_id davinci_ids[] __initdata = {
 		.manufacturer = 0x017,
 		.type	      = 0x64460000,
 	},
+	{
+		/* DM646X */
+		.part_no      = 0xb770,
+		.variant      = 0x0,
+		.manufacturer = 0x017,
+		.type         = 0x64670000,
+	},
+	{
+		/* DM355 */
+		.part_no	= 0xb73b,
+		.variant	= 0x0,
+		.manufacturer	= 0x00f,
+		.type		= 0x03550000,
+	},
 };
 
 /*
@@ -42,7 +58,7 @@ static u16 __init davinci_get_part_no(void)
 {
 	u32 dev_id, part_no;
 
-	dev_id = davinci_readl(JTAG_ID_BASE);
+	dev_id = __raw_readl(JTAG_ID_BASE);
 
 	part_no = ((dev_id >> 12) & 0xffff);
 
@@ -56,13 +72,19 @@ static u8 __init davinci_get_variant(void)
 {
 	u32 variant;
 
-	variant = davinci_readl(JTAG_ID_BASE);
+	variant = __raw_readl(JTAG_ID_BASE);
 
 	variant = (variant >> 28) & 0xf;
 
 	return variant;
 }
 
+unsigned int davinci_rev(void)
+{
+	return davinci_revision >> 16;
+}
+EXPORT_SYMBOL(davinci_rev);
+
 void __init davinci_check_revision(void)
 {
 	int i;
@@ -75,7 +97,7 @@ void __init davinci_check_revision(void)
 	/* First check only the major version in a safe way */
 	for (i = 0; i < ARRAY_SIZE(davinci_ids); i++) {
 		if (part_no == (davinci_ids[i].part_no)) {
-			system_rev = davinci_ids[i].type;
+			davinci_revision = davinci_ids[i].type;
 			break;
 		}
 	}
@@ -84,10 +106,11 @@ void __init davinci_check_revision(void)
 	for (i = 0; i < ARRAY_SIZE(davinci_ids); i++) {
 		if (part_no == davinci_ids[i].part_no &&
 		    variant == davinci_ids[i].variant) {
-			system_rev = davinci_ids[i].type;
+			davinci_revision = davinci_ids[i].type;
 			break;
 		}
 	}
 
-	printk("DaVinci DM%04x variant 0x%x\n", system_rev >> 16, variant);
+	printk(KERN_INFO "DaVinci DM%04x variant 0x%x\n",
+	       davinci_rev(), variant);
 }

arch/arm/mach-davinci/include/mach/board-dm6446evm.h

+/*
+ * DaVinci DM6446 EVM board specific headers
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or ifndef.
+ */
+
+#ifndef _MACH_DAVINCI_DM6446EVM_H
+#define _MACH_DAVINCI_DM6446EVM_H
+
+#include <linux/types.h>
+
+int dm6446evm_eeprom_read(char *buf, off_t off, size_t count);
+int dm6446evm_eeprom_write(char *buf, off_t off, size_t count);
+
+#endif

arch/arm/mach-davinci/include/mach/clkdev.h

+#ifndef __MACH_CLKDEV_H
+#define __MACH_CLKDEV_H
+
+static inline int __clk_get(struct clk *clk)
+{
+	return 1;
+}
+
+static inline void __clk_put(struct clk *clk)
+{
+}
+
+#endif

arch/arm/mach-davinci/include/mach/clock.h

@@ -17,6 +17,5 @@ struct clk;
 
 extern int clk_register(struct clk *clk);
 extern void clk_unregister(struct clk *clk);
-extern int davinci_clk_init(void);
 
 #endif

arch/arm/mach-davinci/include/mach/common.h

@@ -16,6 +16,12 @@ struct sys_timer;
 
 extern struct sys_timer davinci_timer;
 
+extern void davinci_irq_init(void);
+extern void davinci_map_common_io(void);
+
+/* parameters describe VBUS sourcing for host mode */
+extern void setup_usb(unsigned mA, unsigned potpgt_msec);
+
 /* parameters describe VBUS sourcing for host mode */
 extern void setup_usb(unsigned mA, unsigned potpgt_msec);
 

arch/arm/mach-davinci/include/mach/cputype.h

+/*
+ * DaVinci CPU type detection
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * Defines the cpu_is_*() macros for runtime detection of DaVinci
+ * device type.  In addtion, if support for a given device is not
+ * compiled in to the kernel, the macros return 0 so that
+ * resulting code can be optimized out.
+ *
+ * 2009 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef _ASM_ARCH_CPU_H
+#define _ASM_ARCH_CPU_H
+
+extern unsigned int davinci_rev(void);
+
+#define IS_DAVINCI_CPU(type, id)			\
+static inline int is_davinci_dm ##type(void)	        \
+{							\
+	return (davinci_rev() == (id)) ? 1 : 0;	        \
+}
+
+IS_DAVINCI_CPU(644x, 0x6446)
+IS_DAVINCI_CPU(646x, 0x6467)
+IS_DAVINCI_CPU(355, 0x355)
+
+#ifdef CONFIG_ARCH_DAVINCI_DM644x
+#define cpu_is_davinci_dm644x() is_davinci_dm644x()
+#else
+#define cpu_is_davinci_dm644x() 0
+#endif
+
+#ifdef CONFIG_ARCH_DAVINCI_DM646x
+#define cpu_is_davinci_dm646x() is_davinci_dm646x()
+#else
+#define cpu_is_davinci_dm646x() 0
+#endif
+
+#ifdef CONFIG_ARCH_DAVINCI_DM355
+#define cpu_is_davinci_dm355() is_davinci_dm355()
+#else
+#define cpu_is_davinci_dm355() 0
+#endif
+
+#endif

arch/arm/mach-davinci/include/mach/dm644x.h

+/*
+ * This file contains the processor specific definitions
+ * of the TI DM644x.
+ *
+ * Copyright (C) 2008 Texas Instruments.
+ *
+ * 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
+ *
+ */
+#ifndef __ASM_ARCH_DM644X_H
+#define __ASM_ARCH_DM644X_H
+
+#include <linux/platform_device.h>
+#include <mach/hardware.h>
+
+#define DM644X_EMAC_BASE		(0x01C80000)
+#define DM644X_EMAC_CNTRL_OFFSET	(0x0000)
+#define DM644X_EMAC_CNTRL_MOD_OFFSET	(0x1000)
+#define DM644X_EMAC_CNTRL_RAM_OFFSET	(0x2000)
+#define DM644X_EMAC_MDIO_OFFSET		(0x4000)
+#define DM644X_EMAC_CNTRL_RAM_SIZE	(0x2000)
+
+void __init dm644x_init(void);
+
+#endif /* __ASM_ARCH_DM644X_H */

arch/arm/mach-davinci/include/mach/gpio.h

@@ -15,9 +15,11 @@
 
 #include <linux/io.h>
 #include <asm-generic/gpio.h>
-#include <mach/hardware.h>
+
 #include <mach/irqs.h>
 
+#define DAVINCI_GPIO_BASE 0x01C67000
+
 /*
  * basic gpio routines
  *
@@ -26,23 +28,18 @@
  * go through boot loaders.
  *
  * the gpio clock will be turned on when gpios are used, and you may also
- * need to pay attention to PINMUX0 and PINMUX1 to be sure those pins are
+ * need to pay attention to PINMUX registers to be sure those pins are
  * used as gpios, not with other peripherals.
  *
  * On-chip GPIOs are numbered 0..(DAVINCI_N_GPIO-1).  For documentation,
- * and maybe for later updates, code should write GPIO(N) or:
- *  - GPIOV18(N) for 1.8V pins, N in 0..53; same as GPIO(0)..GPIO(53)
- *  - GPIOV33(N) for 3.3V pins, N in 0..17; same as GPIO(54)..GPIO(70)
- *
- * For GPIO IRQs use gpio_to_irq(GPIO(N)) or gpio_to_irq(GPIOV33(N)) etc
- * for now, that's != GPIO(N)
+ * and maybe for later updates, code may write GPIO(N).  These may be
+ * all 1.8V signals, all 3.3V ones, or a mix of the two.  A given chip
+ * may not support all the GPIOs in that range.
  *
  * GPIOs can also be on external chips, numbered after the ones built-in
  * to the DaVinci chip.  For now, they won't be usable as IRQ sources.
  */
-#define	GPIO(X)		(X)		/* 0 <= X <= 70 */
-#define	GPIOV18(X)	(X)		/* 1.8V i/o; 0 <= X <= 53 */
-#define	GPIOV33(X)	((X)+54)	/* 3.3V i/o; 0 <= X <= 17 */
+#define	GPIO(X)		(X)		/* 0 <= X <= (DAVINCI_N_GPIO - 1) */
 
 struct gpio_controller {
 	u32	dir;
@@ -71,12 +68,14 @@ __gpio_to_controller(unsigned gpio)
 {
 	void *__iomem ptr;
 
-	if (gpio < 32)
+	if (gpio < 32 * 1)
 		ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x10);
-	else if (gpio < 64)
+	else if (gpio < 32 * 2)
 		ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x38);
-	else if (gpio < DAVINCI_N_GPIO)
+	else if (gpio < 32 * 3)
 		ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x60);
+	else if (gpio < 32 * 4)
+		ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x88);
 	else
 		ptr = NULL;
 	return ptr;

arch/arm/mach-davinci/include/mach/hardware.h

 /*
- * Common hardware definitions
+ * Hardware definitions common to all DaVinci family processors
  *
- * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
+ * Author: Kevin Hilman, Deep Root Systems, LLC
  *
- * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
  * the terms of the GNU General Public License version 2. This program
  * is licensed "as is" without any warranty of any kind, whether express
  * or implied.
@@ -12,41 +12,16 @@
 #define __ASM_ARCH_HARDWARE_H
 
 /*
- * Base register addresses
+ * Before you add anything to ths file:
+ *
+ * This header is for defines common to ALL DaVinci family chips.
+ * Anything that is chip specific should go in <chipname>.h,
+ * and the chip/board init code should then explicitly include
+ * <chipname>.h
  */
-#define DAVINCI_DMA_3PCC_BASE			(0x01C00000)
-#define DAVINCI_DMA_3PTC0_BASE			(0x01C10000)
-#define DAVINCI_DMA_3PTC1_BASE			(0x01C10400)
-#define DAVINCI_I2C_BASE			(0x01C21000)
-#define DAVINCI_PWM0_BASE			(0x01C22000)
-#define DAVINCI_PWM1_BASE			(0x01C22400)
-#define DAVINCI_PWM2_BASE			(0x01C22800)
-#define DAVINCI_SYSTEM_MODULE_BASE		(0x01C40000)
-#define DAVINCI_PLL_CNTRL0_BASE			(0x01C40800)
-#define DAVINCI_PLL_CNTRL1_BASE			(0x01C40C00)
-#define DAVINCI_PWR_SLEEP_CNTRL_BASE		(0x01C41000)
-#define DAVINCI_SYSTEM_DFT_BASE			(0x01C42000)
-#define DAVINCI_IEEE1394_BASE			(0x01C60000)
-#define DAVINCI_USB_OTG_BASE			(0x01C64000)
-#define DAVINCI_CFC_ATA_BASE			(0x01C66000)
-#define DAVINCI_SPI_BASE			(0x01C66800)
-#define DAVINCI_GPIO_BASE			(0x01C67000)
-#define DAVINCI_UHPI_BASE			(0x01C67800)
-#define DAVINCI_VPSS_REGS_BASE			(0x01C70000)
-#define DAVINCI_EMAC_CNTRL_REGS_BASE		(0x01C80000)
-#define DAVINCI_EMAC_WRAPPER_CNTRL_REGS_BASE	(0x01C81000)
-#define DAVINCI_EMAC_WRAPPER_RAM_BASE		(0x01C82000)
-#define DAVINCI_MDIO_CNTRL_REGS_BASE		(0x01C84000)
-#define DAVINCI_IMCOP_BASE			(0x01CC0000)
-#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		(0x01E00000)
-#define DAVINCI_VLYNQ_BASE			(0x01E01000)
-#define DAVINCI_MCBSP_BASE			(0x01E02000)
-#define DAVINCI_MMC_SD_BASE			(0x01E10000)
-#define DAVINCI_MS_BASE				(0x01E20000)
-#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	(0x02000000)
-#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE	(0x04000000)
-#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE	(0x06000000)
-#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE	(0x08000000)
-#define DAVINCI_VLYNQ_REMOTE_BASE		(0x0C000000)
+#define DAVINCI_SYSTEM_MODULE_BASE        0x01C40000
+
+/* System control register offsets */
+#define DM64XX_VDD3P3V_PWDN	0x48
 
 #endif /* __ASM_ARCH_HARDWARE_H */

arch/arm/mach-davinci/usb.c

@@ -14,6 +14,8 @@
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 
+#define DAVINCI_USB_OTG_BASE 0x01C64000
+
 #if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
 static struct musb_hdrc_eps_bits musb_eps[] = {
 	{ "ep1_tx", 8, },