diff options
| author | Doug Anderson <dianders@chromium.org> | 2014-08-22 19:17:51 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-09-09 13:59:18 +0200 |
| commit | 0173055842cd1d9ed3984e70891c22dbf2f29372 (patch) | |
| tree | d3f35f45b4a78e36b5426d49baadebc79401fb01 /include/linux/mmc | |
| parent | 51da2240906cb94e8f6ba55e403b6206df6fb2dd (diff) | |
| download | op-kernel-dev-0173055842cd1d9ed3984e70891c22dbf2f29372.zip op-kernel-dev-0173055842cd1d9ed3984e70891c22dbf2f29372.tar.gz | |
mmc: dw_mmc: Support voltage changes
For UHS cards we need the ability to switch voltages from 3.3V to
1.8V. Add support to the dw_mmc driver to handle this. Note that
dw_mmc needs a little bit of extra code since the interface needs a
special bit programmed to the CMD register while CMD11 is progressing.
This means adding a few extra states to the state machine to track.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/dw_mmc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 84e2827..0013669 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -26,6 +26,8 @@ enum dw_mci_state { STATE_DATA_BUSY, STATE_SENDING_STOP, STATE_DATA_ERROR, + STATE_SENDING_CMD11, + STATE_WAITING_CMD11_DONE, }; enum { |
