From c5879cf6a9fec40be9e9e63839de8879b3a3f701 Mon Sep 17 00:00:00 2001
From: Kyungmin Park <kyungmin.park@samsung.com>
Date: Fri, 20 Aug 2010 08:55:39 +0900
Subject: [PATCH] s5pc210: universal: Enable MMC (not yet work)

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 board/samsung/universal_c210/universal.c | 60 ++++++++++++++++++++++++++++++++
 include/configs/s5pc210_universal.h      |  4 +--
 2 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
index 8578515..dd3a2ae 100644
--- a/board/samsung/universal_c210/universal.c
+++ b/board/samsung/universal_c210/universal.c
@@ -23,11 +23,18 @@
  */
 
 #include <common.h>
+#include <asm/arch/gpio.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+static struct s5pc210_gpio_part1 *gpio1;
+static struct s5pc210_gpio_part2 *gpio2;
+
 int board_init(void)
 {
+	gpio1 = (struct s5pc210_gpio_part1 *) S5PC210_GPIO_PART1_BASE;
+	gpio2 = (struct s5pc210_gpio_part2 *) S5PC210_GPIO_PART2_BASE;
+
 	gd->bd->bi_arch_number = MACH_TYPE_GONI;
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 
@@ -43,3 +50,56 @@ int dram_init(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_GENERIC_MMC
+int s5p_no_mmc_support(void)
+{
+	return 0;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	int i;
+
+	if (s5p_no_mmc_support())
+		return -1;
+
+	/*
+	 * eMMC GPIO:
+	 * SDR 8-bit@48MHz at MMC0
+	 * GPK0[0]	SD_0_CLK(2)
+	 * GPK0[1]	SD_0_CMD(2)
+	 * GPK0[2]	SD_0_CDn	-> Not used
+	 * GPK0[3:6]	SD_0_DATA[0:3](2)
+	 * GPK1[3:6]	SD_0_DATA[0:3](3)
+	 *
+	 * DDR 4-bit@26MHz at MMC4
+	 * GPK0[0]	SD_4_CLK(3)
+	 * GPK0[1]	SD_4_CMD(3)
+	 * GPK0[2]	SD_4_CDn	-> Not used
+	 * GPK0[3:6]	SD_4_DATA[0:3](3)
+	 * GPK1[3:6]	SD_4_DATA[4:7](4)
+	 */
+	for (i = 0; i < 7; i++) {
+		if (i == 2)
+			continue;
+		/* GPK0[0:6] special function 2 */
+		gpio_cfg_pin(&gpio2->gpio_k0, i, 0x2);
+		/* GPK0[0:6] pull disable */
+		gpio_set_pull(&gpio2->gpio_k0, i, GPIO_PULL_NONE);
+		/* GPK0[0:6] drv 4x */
+		gpio_set_drv(&gpio2->gpio_k0, i, GPIO_DRV_4X);
+	}
+
+	for (i = 3; i < 7; i++) {
+		/* GPK1[3:6] special function 3 */
+		gpio_cfg_pin(&gpio2->gpio_k1, i, 0x3);
+		/* GPK1[3:6] pull disable */
+		gpio_set_pull(&gpio2->gpio_k1, i, GPIO_PULL_NONE);
+		/* GPK1[3:6] drv 4x */
+		gpio_set_drv(&gpio2->gpio_k1, i, GPIO_DRV_4X);
+	}
+
+	return s5p_mmc_init(0);
+}
+#endif
diff --git a/include/configs/s5pc210_universal.h b/include/configs/s5pc210_universal.h
index 25c70ca..728843b 100644
--- a/include/configs/s5pc210_universal.h
+++ b/include/configs/s5pc210_universal.h
@@ -81,7 +81,7 @@
 #define CONFIG_SERIAL2          1	/* we use SERIAL 2 on S5PC210 */
 
 /* MMC */
-#if 0
+#if 1
 #define CONFIG_GENERIC_MMC	1
 #define CONFIG_MMC		1
 #define CONFIG_S5P_MMC		1
@@ -123,7 +123,7 @@
 #define CONFIG_CMD_MTDPARTS
 #define CONFIG_CMD_MTDPARTS_LITE
 //#define CONFIG_CMD_I2C
-//#define CONFIG_CMD_MMC
+#define CONFIG_CMD_MMC
 #define CONFIG_CMD_SLEEP
 #define CONFIG_CMD_PMIC
 #define CONFIG_CMD_DEVICE_POWER
-- 
2.7.4