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| author | Tony Lin <tony.lin@freescale.com> | 2011-08-31 13:28:37 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-01-09 20:23:31 +0800 |
| commit | 34e287c6957bc71b33d0109a2033c4adcef0f5ad (patch) | |
| tree | ea578bcf330cfe12e5b065579239ea1395008947 | |
| parent | 1e18c4f65a765036514dc9b8af4c5d41400e4561 (diff) | |
ENGR00155612-3 [mx6q]add delay after cmd6 for eMMC compatibility
sandisk eMMC4.4 cards need a 1ms delay after cmd6 (switch cmd)
which is confirm by sandisk errata.
add 1ms delay after cmd6 to provide more robustness and compatiblity
of our driver supporting eMMC4.4 cards.
Signed-off-by: Tony Lin <tony.lin@freescale.com>
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 845ce7c533b9..b11876c2c2df 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -397,6 +397,7 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); if (err) return err; + mdelay(1); /* Must check status to be sure of no errors */ do { |