| From f3629494a21cebc057542a042528a90fc23485ea Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Fri, 5 Jun 2020 20:59:15 +0200 |
| Subject: arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep |
| |
| 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 fabc0cebe2aa2..1f9ff2cea2151 100644 |
| --- a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi |
| +++ b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi |
| @@ -555,7 +555,7 @@ |
| pins = "gpio63", "gpio64", "gpio65", "gpio66", |
| "gpio67", "gpio68"; |
| drive-strength = <2>; |
| - bias-disable; |
| + bias-pull-down; |
| }; |
| }; |
| }; |
| -- |
| 2.25.1 |
| |
