From 03e08d7cf6f0c41acb03d3b2c82f39a827a11a10 Mon Sep 17 00:00:00 2001
From: "Vishwanathrao Badarkhe, Manish" <manishv.b@ti.com>
Date: Wed, 22 May 2013 03:38:48 +0000
Subject: [PATCH] da830: add MMC support

Add MMC support for da830 boards in order to perform
mmc operations(read,write and erase).

Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com>
---
 board/davinci/da8xxevm/da830evm.c | 48 +++++++++++++++++++++++++++++++
 include/configs/da830evm.h        | 24 ++++++++++++++--
 2 files changed, 70 insertions(+), 2 deletions(-)

diff --git a/board/davinci/da8xxevm/da830evm.c b/board/davinci/da8xxevm/da830evm.c
index c45c94b4c0..bf014aefbc 100644
--- a/board/davinci/da8xxevm/da830evm.c
+++ b/board/davinci/da8xxevm/da830evm.c
@@ -44,6 +44,11 @@
 #include <asm/arch/nand_defs.h>
 #include <asm/arch/davinci_misc.h>
 
+#ifdef CONFIG_DAVINCI_MMC
+#include <mmc.h>
+#include <asm/arch/sdmmc_defs.h>
+#endif
+
 DECLARE_GLOBAL_DATA_PTR;
 
 /* SPI0 pin muxer settings */
@@ -153,6 +158,23 @@ static const struct pinmux_config usb_pins[] = {
 	{ pinmux(9), 1, 1 }
 };
 
+#ifdef CONFIG_DAVINCI_MMC
+/* MMC0 pin muxer settings */
+const struct pinmux_config mmc0_pins[] = {
+	{ pinmux(15), 2, 7 },	/* MMCSD0_CLK */
+	{ pinmux(16), 2, 0 },	/* MMCSD0_CMD */
+	{ pinmux(13), 2, 6 },	/* MMCSD0_DAT_0 */
+	{ pinmux(13), 2, 7 },	/* MMCSD0_DAT_1 */
+	{ pinmux(14), 2, 0 },	/* MMCSD0_DAT_2 */
+	{ pinmux(14), 2, 1 },	/* MMCSD0_DAT_3 */
+	{ pinmux(14), 2, 2 },	/* MMCSD0_DAT_4 */
+	{ pinmux(14), 2, 3 },	/* MMCSD0_DAT_5 */
+	{ pinmux(14), 2, 4 },	/* MMCSD0_DAT_6 */
+	{ pinmux(14), 2, 5 },	/* MMCSD0_DAT_7 */
+	/* DA830 supports 8-bit mode */
+};
+#endif
+
 static const struct pinmux_resource pinmuxes[] = {
 #ifdef CONFIG_SPI_FLASH
 	PINMUX_ITEM(spi0_pins),
@@ -169,6 +191,9 @@ static const struct pinmux_resource pinmuxes[] = {
 #if defined(CONFIG_DRIVER_TI_EMAC)
 	PINMUX_ITEM(emac_pins),
 #endif
+#ifdef CONFIG_DAVINCI_MMC
+	PINMUX_ITEM(mmc0_pins),
+#endif
 };
 
 static const struct lpsc_resource lpsc[] = {
@@ -177,8 +202,31 @@ static const struct lpsc_resource lpsc[] = {
 	{ DAVINCI_LPSC_EMAC },	/* image download */
 	{ DAVINCI_LPSC_UART2 },	/* console */
 	{ DAVINCI_LPSC_GPIO },
+#ifdef CONFIG_DAVINCI_MMC
+	{ DAVINCI_LPSC_MMC_SD },
+#endif
+
 };
 
+#ifdef CONFIG_DAVINCI_MMC
+static struct davinci_mmc mmc_sd0 = {
+	.reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
+	.host_caps = MMC_MODE_8BIT,
+	.voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
+	.version = MMC_CTLR_VERSION_2,
+};
+
+int board_mmc_init(bd_t *bis)
+{
+	mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
+
+	printf("%x\n", mmc_sd0.input_clk);
+
+	/* Add slot-0 to mmc subsystem */
+	return davinci_mmc_init(bis, &mmc_sd0);
+}
+#endif
+
 int board_init(void)
 {
 #ifndef CONFIG_USE_IRQ
diff --git a/include/configs/da830evm.h b/include/configs/da830evm.h
index 198892ba57..28995a00e4 100644
--- a/include/configs/da830evm.h
+++ b/include/configs/da830evm.h
@@ -226,6 +226,28 @@
 #define CONFIG_CMD_SAVEENV
 #endif
 
+/* SD/MMC configuration */
+#ifndef CONFIG_USE_NAND
+#define CONFIG_MMC
+#define CONFIG_DAVINCI_MMC_SD1
+#define CONFIG_GENERIC_MMC
+#define CONFIG_DAVINCI_MMC
+#endif
+
+/*
+ * Enable MMC commands only when
+ * MMC support is present
+ */
+#if defined(CONFIG_MMC) || defined(CONFIG_USB_DA8XX)
+#define CONFIG_DOS_PARTITION	/* include support for FAT/storage */
+#define CONFIG_CMD_FAT		/* include support for FAT cmd */
+#endif
+
+#ifdef CONFIG_MMC
+#define CONFIG_CMD_MMC
+#define CONFIG_CMD_EXT2
+#endif
+
 #if !defined(CONFIG_USE_NAND) && \
 	!defined(CONFIG_USE_NOR) && \
 	!defined(CONFIG_USE_SPIFLASH)
@@ -244,8 +266,6 @@
 
 #define CONFIG_USB_STORAGE	/* MSC class support */
 #define CONFIG_CMD_STORAGE	/* inclue support for usb-storage cmd */
-#define CONFIG_CMD_FAT		/* inclue support for FAT/storage */
-#define CONFIG_DOS_PARTITION	/* inclue support for FAT/storage */
 
 #ifdef CONFIG_USB_KEYBOARD	/* HID class support */
 #define CONFIG_SYS_USB_EVENT_POLL
-- 
2.39.5