diff options
| author | Doug Anderson <dianders@chromium.org> | 2014-10-14 09:39:12 -0700 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-11-10 12:40:36 +0100 |
| commit | e7791079ae89d91024019e11a1f430d38c491246 (patch) | |
| tree | bc2fe86bbf00308cca6757c07e4796b60ce71098 /drivers/mmc | |
| parent | b19caf379c82e99737c29bc15d7b7fd7d24279f9 (diff) | |
| download | blackbird-obmc-linux-e7791079ae89d91024019e11a1f430d38c491246.tar.gz blackbird-obmc-linux-e7791079ae89d91024019e11a1f430d38c491246.zip | |
mmc: dw_mmc: rockchip: Don't recalc the clock when it goes off
The "set_ios" function is called with a clock of 0 when the clock is
turning off. There's no reason to go through all the extra Rockchip
logic (whose goal is to make sure DIV is 0 or 1) in that case. The
Rockchip logic happened to work because the CCF will pick the lowest
possible rate when you ask it for a clock of 0, but it's silly to go
through all the remuxing and adjusting for no reason.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/dw_mmc-rockchip.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index f0c2cb1a210d..bbb4ec386e56 100644 --- a/drivers/mmc/host/dw_mmc-rockchip.c +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -37,6 +37,9 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios) unsigned int cclkin; u32 bus_hz; + if (ios->clock == 0) + return; + /* * cclkin: source clock of mmc controller * bus_hz: card interface clock generated by CLKGEN |
