diff options
| author | Ryan QIAN <b32804@freescale.com> | 2012-11-22 15:38:46 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-06-03 22:58:39 -0500 |
| commit | c8f8901f061e359ac421b91bd89a03facd11b469 (patch) | |
| tree | 2d12dd30540a9d671d9259b53c68d8e4b06539bf /drivers/mmc | |
| parent | 23cfaa6cb65eab49a3b9815b2eba575d0ae0fec4 (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>
Diffstat (limited to 'drivers/mmc')
| -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 de828586d4fd..55780d426df0 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; |