[PATCH 1/3] mmc: mmci: Use optional sleep pinctrl state
linus.walleij at linaro.org
Mon May 13 13:48:48 EDT 2013
On Mon, May 13, 2013 at 3:47 PM, Ulf Hansson <ulf.hansson at stericsson.com> wrote:
> By optionally putting the pins into sleep state in the .runtime_suspend
> callback we can accomplish two things. One is to minimize current leakage
> from pins and thus save power, second we can prevent the IP from driving
> pins output in an uncontrolled manner, which may happen if the power domain
> drops the domain regulator.
> When returning from idle, entering .runtime_resume callback, the pins
> are restored to default state.
> Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org>
Looks straight-forward from a pinctrl point of view.
Reviewed-by: Linus Walleij <linus.walleij at linaro.org>
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