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mmc: tmio: enable module clock before resetting when resuming 

On runtime power management resume, the host clock needs to be
enabled before calling tmio_mmc_reset. If the mmc device has a power
domain entry, the host clock is enabled via genpd_runtime_resume,
running before tmio_mmc_host_runtime_resume. If the mmc device has no
power domain entry, however, genpd_runtime_resume is not called. This
patch changes tmio_mmc_host_runtime_resume to enable the host clock
before calling tmio_mmc_reset.

Based on work from Masaharu Hayakawa.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Niklas Söderlund 2018-11-26 18:02:45 +01:00 committed by Ulf Hansson
parent b0715f04d0
commit ac1e25c870
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/tmio_mmc_core.c
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@ -1326,8 +1326,8 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
{
struct tmio_mmc_host *host = dev_get_drvdata(dev);
host->reset(host);
tmio_mmc_clk_enable(host);
host->reset(host);
if (host->clk_cache)
host->set_clock(host, host->clk_cache);