diff options
| author | Ryan QIAN <b32804@freescale.com> | 2013-01-16 10:23:28 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 08:59:22 -0500 |
| commit | 2c87b2660ed5309131d5d7dade8c4532e8ad53cf (patch) | |
| tree | ac663b903a2d453bdf05fb7741ba55aa2c0c1bea | |
| parent | d6f8c58e1e21206e99ff762b313e61c84f63c73a (diff) | |
ENGR00240226-07 mmc: add delay after CMD6 befoer sending CMD13 for sandisk
- Some sandisk emmc cards need certain delay befor sending cmd13 after
cmd6. Original CR: ENGR174296 (commit: fd031f9)
Acked-by: Aisheng Dong <b29396@freescale.com>
Signed-off-by: Ryan QIAN <b32804@freescale.com>
(cherry picked from commit f942bf1db36355d46f38792601594949f3f2c71b)
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index e5b5eeb548d1..b2680c95ef10 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -445,6 +445,12 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, return 0; /* + * WORKAROUND: for Sandisk eMMC cards, it might need certain delay + * before sending CMD13 after CMD6 + */ + mdelay(1); + + /* * Must check status to be sure of no errors * If CMD13 is to check the busy completion of the timing change, * disable the check of CRC error. |