diff options
| author | Sahitya Tummala <stummala@codeaurora.org> | 2013-08-20 15:32:09 +0530 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-27 10:28:53 -0700 |
| commit | c2037aa944ca2f3decbefa620d4392652b51f286 (patch) | |
| tree | 92fa1ffc37f5a64c66b106c4e42624fa5ee3f44c /include/linux | |
| parent | 2ba264341c60b4a5ab95ef75575a92b941cedc9d (diff) | |
mmc: sdhci-msm: Fix issue with 1.8v switch sequence in 3.10 kernel
The SD3.0 voltage switch sequence to 1.8v would involve stopping the
SDCLK before changing the voltage level and with recent changes in 3.10
kernel, the peripheral clocks are also getting disabled instead of
just stopping the clock to the card. This patch makes sure this doesn't
happen by marking the flag card_clock_off in struct mmc_host before
starting the voltage switch sequence and checking it in host controller
driver.
Change-Id: If62378ba1dd369e69524365a4421d57317c22ca2
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmc/host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 1939cd47b3aa..63a10df66b87 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -404,6 +404,11 @@ struct mmc_host { } embedded_sdio_data; #endif + /* + * Set to 1 to just stop the SDCLK to the card without + * actually disabling the clock from it's source. + */ + bool card_clock_off; unsigned long private[0] ____cacheline_aligned; }; |