s5p: cmd_mmc: fixed 4-bit boot buswidth

S5PC210 EVT0 didn't support 8-bit boot buswidth.
So, We set 4-bit boot buswidth (workaround).

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index 6de6832..6ba0d22 100644 (file)
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -272,6 +272,16 @@ int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                        mmc->boot_config = (ack << 6) | (enable << 3) | access;
 
                        mmc_init(mmc);
+
+                       /*
+                        * Note : S5PC210 EVT0 only can boot from 4-bit
+                        * buswidth. Set 4-bit boot buswidth
+                        */
+                       if (!access) {
+                               mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+                                       EXT_CSD_BOOT_BUS_WIDTH, MMC_BOOT_4BIT);
+
+                       }
                } else if (strcmp(argv[1], "erase") == 0) {
                        int dev = simple_strtoul(argv[2], NULL, 10);
                        u32 blk = simple_strtoul(argv[3], NULL, 16);