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    Subject[PATCH 5.8 013/255] arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep
    Date
    From: Stephan Gerhold <stephan@gerhold.net>

    [ 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>
    ---
    arch/arm64/boot/dts/qcom/msm8916-pins.dtsi | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
    index 5785bf0a807ce..591f48a575353 100644
    --- a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
    +++ b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
    @@ -569,7 +569,7 @@
    pins = "gpio63", "gpio64", "gpio65", "gpio66",
    "gpio67", "gpio68";
    drive-strength = <2>;
    - bias-disable;
    + bias-pull-down;
    };
    };
    };
    --
    2.25.1


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