diff options
| -rw-r--r-- | drivers/mmc/mmc.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index bf82c515600..71664173016 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -2933,11 +2933,18 @@ static int mmc_power_cycle(struct mmc *mmc) return ret; /* - * SD spec recommends at least 1ms of delay. Let's wait for 2ms - * to be on the safer side. + * SD spec recommends at least 1ms of 'power on' delay. + * Let's wait for 2ms to be on the safer side. */ udelay(2000); - return mmc_power_on(mmc); + ret = mmc_power_on(mmc); + + /* + * SD spec recommends at least 1ms of 'stable supply voltage' delay. + * Let's wait for 2ms to be on the safer side. + */ + udelay(2000); + return ret; } int mmc_get_op_cond(struct mmc *mmc, bool quiet) |