diff --git a/arch/arm/mach-rmobile/include/mach/sh_sdhi.h b/arch/arm/mach-rmobile/include/mach/sh_sdhi.h
index a5ea45b..1fb0648 100644
--- a/arch/arm/mach-rmobile/include/mach/sh_sdhi.h
+++ b/arch/arm/mach-rmobile/include/mach/sh_sdhi.h
@@ -50,8 +50,10 @@
 /* SDHI CMD VALUE */
 #define CMD_MASK			0x0000ffff
 #define SDHI_APP			0x0040
+#define SDHI_MMC_SEND_OP_COND		0x0701
 #define SDHI_SD_APP_SEND_SCR		0x0073
 #define SDHI_SD_SWITCH			0x1C06
+#define SDHI_MMC_SEND_EXT_CSD		0x1C08
 
 /* SDHI_PORTSEL */
 #define USE_1PORT			(1 << 8) /* 1 port */
@@ -120,7 +122,10 @@
 #define CLK_ENABLE			(1 << 8)
 
 /* SDHI_OPTION */
-#define OPT_BUS_WIDTH_1			(1 << 15)	/* bus width = 1 bit */
+#define OPT_BUS_WIDTH_M			(5 << 13)	/* 101b (15-13bit) */
+#define OPT_BUS_WIDTH_1			(4 << 13)	/* bus width = 1 bit */
+#define OPT_BUS_WIDTH_4			(0 << 13)	/* bus width = 4 bit */
+#define OPT_BUS_WIDTH_8			(1 << 13)	/* bus width = 8 bit */
 
 /* SDHI_ERR_STS1 */
 #define ERR_STS1_CRC_ERROR		((1 << 11) | (1 << 10) | (1 << 9) | \
diff --git a/drivers/mmc/sh_sdhi.c b/drivers/mmc/sh_sdhi.c
index d1dd0f0..c64beb6 100644
--- a/drivers/mmc/sh_sdhi.c
+++ b/drivers/mmc/sh_sdhi.c
@@ -489,6 +489,13 @@
 		else /* SD_SWITCH */
 			opc = SDHI_SD_SWITCH;
 		break;
+	case MMC_CMD_SEND_OP_COND:
+		opc = SDHI_MMC_SEND_OP_COND;
+		break;
+	case MMC_CMD_SEND_EXT_CSD:
+		if (data)
+			opc = SDHI_MMC_SEND_EXT_CSD;
+		break;
 	default:
 		break;
 	}
@@ -513,6 +520,7 @@
 	case MMC_CMD_READ_SINGLE_BLOCK:
 	case SDHI_SD_APP_SEND_SCR:
 	case SDHI_SD_SWITCH: /* SD_SWITCH */
+	case SDHI_MMC_SEND_EXT_CSD:
 		ret = sh_sdhi_single_read(host, data);
 		break;
 	default:
@@ -648,12 +656,18 @@
 	if (ret)
 		return -EINVAL;
 
-	if (mmc->bus_width == 4)
-		sh_sdhi_writew(host, SDHI_OPTION, ~OPT_BUS_WIDTH_1 &
-			       sh_sdhi_readw(host, SDHI_OPTION));
+	if (mmc->bus_width == 8)
+		sh_sdhi_writew(host, SDHI_OPTION,
+			       OPT_BUS_WIDTH_8 | (~OPT_BUS_WIDTH_M &
+			       sh_sdhi_readw(host, SDHI_OPTION)));
+	else if (mmc->bus_width == 4)
+		sh_sdhi_writew(host, SDHI_OPTION,
+			       OPT_BUS_WIDTH_4 | (~OPT_BUS_WIDTH_M &
+			       sh_sdhi_readw(host, SDHI_OPTION)));
 	else
-		sh_sdhi_writew(host, SDHI_OPTION, OPT_BUS_WIDTH_1 |
-			       sh_sdhi_readw(host, SDHI_OPTION));
+		sh_sdhi_writew(host, SDHI_OPTION,
+			       OPT_BUS_WIDTH_1 | (~OPT_BUS_WIDTH_M &
+			       sh_sdhi_readw(host, SDHI_OPTION)));
 
 	debug("clock = %d, buswidth = %d\n", mmc->clock, mmc->bus_width);