linux-kernel - [PATCH V2] arm64: dts: qcom: sc7180: SD-card GPIO pin set bias-pull up

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Message-Id: <1595328245-29328-1-git-send-email-sbhanu@codeaurora.org>
Date:   Tue, 21 Jul 2020 16:14:05 +0530
From:   Shaik Sajida Bhanu <sbhanu@...eaurora.org>
To:     adrian.hunter@...el.com, ulf.hansson@...aro.org,
        robh+dt@...nel.org, mka@...omium.org
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        agross@...nel.org, bjorn.andersson@...aro.org,
        Veerabhadrarao Badiganti <vbadigan@...eaurora.org>,
        Shaik Sajida Bhanu <sbhanu@...eaurora.org>
Subject: [PATCH V2] arm64: dts: qcom: sc7180: SD-card GPIO pin set bias-pull up

From: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>

On some sc7180 based platforms where external pull is not present on cd-gpio,
this gpio state is getting read as HIGH when sleep config is applied on it.
This is resulting in SDcard rescan after suspend-resume even though SDcard
is not present.

Update cd-gpio sleep config with bais-pull to fix this issue.

Signed-off-by: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
Signed-off-by: Shaik Sajida Bhanu <sbhanu@...eaurora.org>
---

Changes since V1:
	- Incorporated review comments by Bjorn Andersson.
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index d78a066..a3527c3 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -1819,7 +1819,7 @@
 
 				pinconf-sd-cd {
 					pins = "gpio69";
-					bias-disable;
+					bias-pull-up;
 					drive-strength = <2>;
 				};
 			};
-- 
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