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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 /include/linux/mmc/mmc.h | |
| parent | 3853a042325e8f497c199020979c4fc824528c6e (diff) | |
| download | linux-b097e07f57930eda774c83aa46e8e401686d01dc.tar.gz linux-b097e07f57930eda774c83aa46e8e401686d01dc.tar.bz2 linux-b097e07f57930eda774c83aa46e8e401686d01dc.zip | |
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 'include/linux/mmc/mmc.h')
| -rw-r--r-- | include/linux/mmc/mmc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 124f562118b8..4819cfbc3795 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -302,6 +302,7 @@ struct _mmc_csd { #define EXT_CSD_REV 192 /* RO */ #define EXT_CSD_STRUCTURE 194 /* RO */ #define EXT_CSD_CARD_TYPE 196 /* RO */ +#define EXT_CSD_DRIVER_STRENGTH 197 /* RO */ #define EXT_CSD_OUT_OF_INTERRUPT_TIME 198 /* RO */ #define EXT_CSD_PART_SWITCH_TIME 199 /* RO */ #define EXT_CSD_PWR_CL_52_195 200 /* RO */ |