diff options
| -rw-r--r-- | drivers/mmc/mmc.c | 4 | ||||
| -rw-r--r-- | include/mmc.h | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 596732e..aebe578 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1199,7 +1199,9 @@ int mmc_startup(struct mmc *mmc) else mmc_set_clock(mmc, 25000000); } else { - for (width = EXT_CSD_BUS_WIDTH_8; width >= 0; width--) { + width = ((mmc->host_caps & MMC_MODE_MASK_WIDTH_BITS) >> + MMC_MODE_WIDTH_BITS_SHIFT); + for (; width >= 0; width--) { /* Set the card to use 4 bit*/ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, width); diff --git a/include/mmc.h b/include/mmc.h index f52df70..ee16349 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -47,6 +47,9 @@ #define MMC_MODE_SPI 0x400 #define MMC_MODE_HC 0x800 +#define MMC_MODE_MASK_WIDTH_BITS (MMC_MODE_4BIT | MMC_MODE_8BIT) +#define MMC_MODE_WIDTH_BITS_SHIFT 8 + #define SD_DATA_4BIT 0x00040000 #define IS_SD(x) (x->version & SD_VERSION_SD) |