mmc: sdhci-msm: Re-initialize DLL if MCLK is gated dynamically

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On few SDHCI-MSM controllers, the host controller's clock tuning
circuit may go out of sync if controller clocks are gated which
eventually will result in data CRC, command CRC/timeout errors.
To overcome this h/w limitation, the DLL needs to be re-initialized
and restored with its old settings once clocks are ungated.

Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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Veerabhadrarao Badiganti 2018-11-12 12:22:17 +05:30 • committed by Ulf Hansson

parent 247cb8b7a7

commit 21f1e2d457

1 changed files with 67 additions and 11 deletions

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78

drivers/mmc/host/sdhci-msm.c

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