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arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep

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[ Upstream commit e2ee9edc282961783d519c760bbaa20fed4dec38 ]

The original qcom kernel changed the PDM GPIOs to be pull-down
during sleep at some point. Reportedly this was done because
there was some "leakage at PDM outputs during sleep":

  https://source.codeaurora.org/quic/la/kernel/msm-3.10/commit/?id=0f87e08c1cd3e6484a6f7fb3e74e37340bdcdee0

I cannot say how effective this is, but everything seems to work
fine with this change so let's apply the same to mainline just
to be sure.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200605185916.318494-3-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stephan Gerhold 2020-06-05 20:59:15 +02:00 committed by Greg Kroah-Hartman
parent d8cc881483
commit 88eb00cb39
1 changed files with 1 additions and 1 deletions
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arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
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@ -521,7 +521,7 @@
pins = "gpio63", "gpio64", "gpio65", "gpio66",
"gpio67", "gpio68";
drive-strength = <2>;
bias-disable;
bias-pull-down;
};
};
};