diff options
| author | Ryan QIAN <b32804@freescale.com> | 2012-11-22 15:38:46 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-11-28 16:57:04 +0800 |
| commit | dfb9d730506d19c5f3d36358ff1511c0ae752b75 (patch) | |
| tree | 73283b4868c09425bc13287e30bbdc91c99d2f05 | |
| parent | f4ee80c9873f12c63c420f9ffd3ee0e46782f466 (diff) | |
ENGR00234519 mmc: support eMMC v4.5 memory cards
Bypass eMMC version checking, so that eMMC v4.5 can work on current kernel as
eMMC v4.4 cards, no specific v4.5 feature supported. Only basic read/write
operations are supported, also ddr mode is supported.
Acked-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ryan QIAN <b32804@freescale.com>
| -rw-r--r-- | drivers/mmc/core/mmc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index f8ffabd187cf..ce5e63c61b51 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -259,7 +259,8 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) } card->ext_csd.rev = ext_csd[EXT_CSD_REV]; - if (card->ext_csd.rev > 5) { + /* workaround: support emmc 4.5 cards to work at emmc 4.4 mode */ + if (card->ext_csd.rev > 6) { printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n", mmc_hostname(card->host), card->ext_csd.rev); err = -EINVAL; |