diff options
| author | Tony Lin <tony.lin@freescale.com> | 2011-08-31 13:28:37 +0800 |
|---|---|---|
| committer | Tony Lin <tony.lin@freescale.com> | 2011-09-01 15:43:08 +0800 |
| commit | 041c981279eb31b0c4307f999d90f74048e7bc80 (patch) | |
| tree | 439c8b670fb3dbe5faad0392f2e2e5573fa0f0ee | |
| parent | 6846779e7ce7c3ee8601b0914c8995d52c79a3ca (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 60842f878ded..6e57633dd722 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -408,6 +408,7 @@ 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 { |