arm: rmobile: alt: Add support MMC and MMC command

Alt board has been connected to eMMC of 8GB to MMC port.
This enables MMC port and MMC command.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/renesas/alt/alt.c

@@ -16,6 +16,7 @@
 #include <asm/gpio.h>
 #include <asm/arch/rmobile.h>
 #include <asm/arch/rcar-mstp.h>
+#include <asm/arch/mmc.h>
 #include <netdev.h>
 #include <miiphy.h>
 #include <i2c.h>
@@ -42,6 +43,7 @@ void s_init(void)
 #define SCIF2_MSTP719	(1 << 19)
 #define ETHER_MSTP813	(1 << 13)
 #define IIC1_MSTP323	(1 << 23)
+#define MMC0_MSTP315	(1 << 15)
 
 int board_early_init_f(void)
 {
@@ -57,6 +59,10 @@ int board_early_init_f(void)
 	/* IIC1 / sh-i2c ch1 */
 	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, IIC1_MSTP323);
 
+#ifdef CONFIG_SH_MMCIF
+	/* MMC */
+	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, MMC0_MSTP315);
+#endif
 	return 0;
 }
 
@@ -120,6 +126,19 @@ int board_eth_init(bd_t *bis)
 #endif
 }
 
+int board_mmc_init(bd_t *bis)
+{
+	int ret = 0;
+
+#ifdef CONFIG_SH_MMCIF
+	gpio_request(GPIO_GP_4_31, NULL);
+	gpio_set_value(GPIO_GP_4_31, 1);
+
+	ret = mmcif_mmc_init();
+#endif
+	return ret;
+}
+
 int dram_init(void)
 {
 	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;

include/configs/alt.h

@@ -95,6 +95,15 @@
 #define CONFIG_USB_EHCI_RMOBILE
 #define CONFIG_USB_MAX_CONTROLLER_COUNT	2
 
+/* MMCIF */
+#define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_CMD_MMC
+
+#define CONFIG_SH_MMCIF
+#define CONFIG_SH_MMCIF_ADDR		0xee200000
+#define CONFIG_SH_MMCIF_CLK		48000000
+
 /* Module stop status bits */
 /* INTC-RT */
 #define CONFIG_SMSTP0_ENA	0x00400000