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authorAdrian Hunter <adrian.hunter@intel.com>2015-02-06 15:12:57 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2015-06-01 10:07:13 +0300
commitb097e07f57930eda774c83aa46e8e401686d01dc (patch)
tree95d8979dd8fec7f787b30e1538f960e999e3c1ef /drivers/mmc
parent3853a042325e8f497c199020979c4fc824528c6e (diff)
downloadlinux-b097e07f57930eda774c83aa46e8e401686d01dc.tar.xz
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')
-rw-r--r--drivers/mmc/core/mmc.c1
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)