[U-Boot] [PATCH] powerpc/esdhc: force the bus width to 4bit

[Chang-Ming.Huang at freescale.com]

From: Jerry Huang <Chang-Ming.Huang at freescale.com>

For the current u-boot codes, only 4bit/1bit SD/SDHC bus width is support.
So for MMC card, we also support 4bit bus width,
otherwiase, we will get the 12bit bus width, which is not correct:
=> mmcinfo
Device: FSL_SDHC
Manufacturer ID: 1e
OEM: ffff
Name: MMC
Tran Speed: 52000000
Rd Block Len: 512
MMC version 4.0
High Capacity: No
Capacity: 1.9 GiB
Bus Width: 12-bit

Signed-off-by: Jerry Huang <Chang-Ming.Huang at freescalecom>
CC: Andy Fleming <afleming at gmail.com>
CC: Marek Vasut <marex at denx.de>
---
 drivers/mmc/fsl_esdhc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 3f8d30d..7b83dd2 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -577,7 +577,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
 		return -1;
 	}
 
-	mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
+	mmc->host_caps = MMC_MODE_4BIT;
 
 	if (caps & ESDHC_HOSTCAPBLT_HSS)
 		mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
-- 
1.7.9.5