arm:exynos: add common DTS file for exynos 4

This patch adds common dtsi file and config header for all
Exynos 4 based boards.

Patch additionaly adds board specific (weak) functions for
board_early_init_f and board_power_init functions.
Signed-off-by: NPiotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

arch/arm/dts/exynos4.dtsi

+/*
+ * Samsung's Exynos4 SoC common device tree source
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	serial@13800000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13800000 0x3c>;
+		id = <0>;
+	};
+
+	serial@13810000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13810000 0x3c>;
+		id = <1>;
+	};
+
+	serial@13820000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13820000 0x3c>;
+		id = <2>;
+	};
+
+	serial@13830000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13830000 0x3c>;
+		id = <3>;
+	};
+
+	serial@13840000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13840000 0x3c>;
+		id = <4>;
+	};
+
+	i2c@13860000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <0 0 0>;
+	};
+
+	i2c@13870000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <1 1 0>;
+	};
+
+	i2c@13880000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <2 2 0>;
+	};
+
+	i2c@13890000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <3 3 0>;
+	};
+
+	i2c@138a0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <4 4 0>;
+	};
+
+	i2c@138b0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <5 5 0>;
+	};
+
+	i2c@138c0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <6 6 0>;
+	};
+
+	i2c@138d0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,s3c2440-i2c";
+		interrupts = <7 7 0>;
+	};
+
+	sdhci@12510000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-mmc";
+		reg = <0x12510000 0x1000>;
+		interrupts = <0 75 0>;
+	};
+
+	sdhci@12520000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-mmc";
+		reg = <0x12520000 0x1000>;
+		interrupts = <0 76 0>;
+	};
+
+	sdhci@12530000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-mmc";
+		reg = <0x12530000 0x1000>;
+		interrupts = <0 77 0>;
+	};
+
+	sdhci@12540000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-mmc";
+		reg = <0x12540000 0x1000>;
+		interrupts = <0 78 0>;
+	};
+
+	gpio: gpio {
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
+};

arch/arm/include/asm/arch-exynos/board.h

@@ -14,4 +14,16 @@
  */
 int exynos_init(void);
 
+/*
+ * Exynos board specific changes for
+ * board_early_init_f
+ */
+int exynos_early_init_f(void);
+
+/*
+ * Exynos board specific changes for
+ * board_power_init
+ */
+int exynos_power_init(void);
+
 #endif	/* EXYNOS_BOARD_H */

board/samsung/common/board.c

@@ -33,6 +33,20 @@ struct local_info {
 
 static struct local_info local;
 
+int __exynos_early_init_f(void)
+{
+	return 0;
+}
+int exynos_early_init_f(void)
+	__attribute__((weak, alias("__exynos_early_init_f")));
+
+int __exynos_power_init(void)
+{
+	return 0;
+}
+int exynos_power_init(void)
+	__attribute__((weak, alias("__exynos_power_init")));
+
 #if defined CONFIG_EXYNOS_TMU
 /* Boot Time Thermal Analysis for SoC temperature threshold breach */
 static void boot_temp_check(void)
@@ -140,7 +154,7 @@ int board_early_init_f(void)
 	board_i2c_init(gd->fdt_blob);
 #endif
 
-	return err;
+	return exynos_early_init_f();
 }
 #endif
 
@@ -284,7 +298,7 @@ int power_init_board(void)
 	ret = max77686_init();
 #endif
 
-	return ret;
+	return exynos_power_init();
 }
 #endif
 

include/configs/exynos4-dt.h

+/*
+ * Copyright (C) 2014 Samsung Electronics
+ *
+ * Configuration settings for the SAMSUNG EXYNOS5 board.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/* High Level Configuration Options */
+#define CONFIG_SAMSUNG			/* in a SAMSUNG core */
+#define CONFIG_S5P			/* S5P Family */
+#define CONFIG_EXYNOS4			/* which is in a Exynos4 Family */
+
+#include <asm/arch/cpu.h>		/* get chip and board defs */
+
+#define CONFIG_ARCH_CPU_INIT
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DISPLAY_BOARDINFO
+#define CONFIG_BOARD_COMMON
+
+/* Enable fdt support */
+#define CONFIG_OF_CONTROL
+#define CONFIG_OF_SEPARATE
+
+#define CONFIG_SYS_CACHELINE_SIZE	32
+
+/* input clock of PLL: EXYNOS4 boards have 24MHz input clock */
+#define CONFIG_SYS_CLK_FREQ		24000000
+
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_REVISION_TAG
+#define CONFIG_INITRD_TAG
+#define CONFIG_CMDLINE_EDITING
+
+#include <linux/sizes.h>
+
+/* SD/MMC configuration */
+#define CONFIG_GENERIC_MMC
+#define CONFIG_MMC
+#define CONFIG_S5P_SDHCI
+#define CONFIG_SDHCI
+#define CONFIG_MMC_SDMA
+#define CONFIG_MMC_DEFAULT_DEV	0
+
+/* PWM */
+#define CONFIG_PWM
+
+#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+/* allow to overwrite serial and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+
+/* Command definition*/
+#include <config_cmd_default.h>
+
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_MISC
+#undef CONFIG_CMD_NET
+#undef CONFIG_CMD_NFS
+#undef CONFIG_CMD_XIMG
+#undef CONFIG_CMD_CACHE
+#undef CONFIG_CMD_ONENAND
+#undef CONFIG_CMD_MTDPARTS
+#define CONFIG_CMD_CACHE
+#define CONFIG_CMD_MMC
+#define CONFIG_CMD_DFU
+#define CONFIG_CMD_GPT
+#define CONFIG_CMD_PMIC
+#define CONFIG_CMD_SETEXPR
+
+#define CONFIG_BOOTDELAY		3
+#define CONFIG_ZERO_BOOTDELAY_CHECK
+
+/* FAT */
+#define CONFIG_CMD_FAT
+#define CONFIG_FAT_WRITE
+
+/* EXT4 */
+#define CONFIG_CMD_EXT4
+#define CONFIG_CMD_EXT4_WRITE
+
+/* USB Composite download gadget - g_dnl */
+#define CONFIG_USBDOWNLOAD_GADGET
+
+/* TIZEN THOR downloader support */
+#define CONFIG_CMD_THOR_DOWNLOAD
+#define CONFIG_THOR_FUNCTION
+
+#define CONFIG_DFU_FUNCTION
+#define CONFIG_DFU_MMC
+#define CONFIG_SYS_DFU_DATA_BUF_SIZE SZ_32M
+#define DFU_DEFAULT_POLL_TIMEOUT 300
+
+/* USB Samsung's IDs */
+#define CONFIG_G_DNL_VENDOR_NUM 0x04E8
+#define CONFIG_G_DNL_PRODUCT_NUM 0x6601
+#define CONFIG_G_DNL_THOR_VENDOR_NUM CONFIG_G_DNL_VENDOR_NUM
+#define CONFIG_G_DNL_THOR_PRODUCT_NUM 0x685D
+#define CONFIG_G_DNL_MANUFACTURER "Samsung"
+
+/* Miscellaneous configurable options */
+#define CONFIG_SYS_LONGHELP		/* undef to save memory */
+#define CONFIG_SYS_HUSH_PARSER		/* use "hush" command parser	*/
+#define CONFIG_SYS_CBSIZE		256	/* Console I/O Buffer Size */
+#define CONFIG_SYS_PBSIZE		384	/* Print Buffer Size */
+#define CONFIG_SYS_MAXARGS		16	/* max number of command args */
+/* Boot Argument Buffer Size */
+#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
+
+/* FLASH and environment organization */
+#define CONFIG_SYS_NO_FLASH
+#undef CONFIG_CMD_IMLS
+
+#define CONFIG_SYS_MONITOR_LEN		(256 << 10)	/* Reserve 2 sectors */
+
+#define CONFIG_DOS_PARTITION
+#define CONFIG_EFI_PARTITION
+#define CONFIG_CMD_PART
+#define CONFIG_PARTITION_UUIDS
+
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_S3C_UDC_OTG
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_USB_GADGET_VBUS_DRAW	2
+#define CONFIG_USB_CABLE_CHECK
+
+#define CONFIG_CMD_USB_MASS_STORAGE
+#define CONFIG_USB_GADGET_MASS_STORAGE
+
+/* Enable devicetree support */
+#define CONFIG_OF_LIBFDT
+
+#endif	/* __CONFIG_H */