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| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-02-06 14:12:57 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-06-01 09:07:13 +0200 |
| commit | b097e07f57930eda774c83aa46e8e401686d01dc (patch) | |
| tree | 95d8979dd8fec7f787b30e1538f960e999e3c1ef /drivers/mmc/core | |
| parent | 3853a042325e8f497c199020979c4fc824528c6e (diff) | |
| download | linux-b097e07f57930eda774c83aa46e8e401686d01dc.tar.bz2 | |
mmc: mmc: Read card's valid driver strength mask
In preparation for supporing drive strength selection
for eMMC, read the card's valid driver strengths.
Note that though the SD spec uses the term "drive strength",
the JEDEC eMMC spec uses the term "driver strength".
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 03c94c2f23e1..9b808d1d6ca7 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -437,6 +437,7 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) card->ext_csd.raw_trim_mult = ext_csd[EXT_CSD_TRIM_MULT]; card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; + card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; if (card->ext_csd.rev >= 4) { if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & EXT_CSD_PART_SETTING_COMPLETED) |