linux-kernel - [PATCH v2 7/7] arm64: dts: qcom: sdm845-oneplus: Implement panel sleep pinctrl

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Message-Id: <20251008-s6e3fc2x01-v2-7-21eca1d5c289@ixit.cz>
Date: Wed, 08 Oct 2025 16:05:34 +0200
From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@...nel.org>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <jessica.zhang@....qualcomm.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, Sam Ravnborg <sam@...nborg.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Casey Connolly <casey.connolly@...aro.org>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 phone-devel@...r.kernel.org, David Heidelberg <david@...t.cz>
Subject: [PATCH v2 7/7] arm64: dts: qcom: sdm845-oneplus: Implement panel
 sleep pinctrl

From: David Heidelberg <david@...t.cz>

We can DSI pin from 8mA to 2mA while suspend, do it.

In theory, should give us extra 2 hours of idle battery life.

Signed-off-by: David Heidelberg <david@...t.cz>
---
 .../arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi | 26 +++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
index c216369fae237..fa538b37ef25b 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
@@ -463,8 +463,9 @@ display_panel: panel@0 {
 		te-gpios = <&tlmm 30 GPIO_ACTIVE_HIGH>;
 		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
 
-		pinctrl-names = "default";
+		pinctrl-names = "default", "sleep";
 		pinctrl-0 = <&panel_default>;
+		pinctrl-1 = <&panel_sleep>;
 
 		port {
 			panel_in: endpoint {
@@ -871,6 +872,29 @@ te-pins {
 		};
 	};
 
+	panel_sleep: panel-sleep-state {
+		esd-pins {
+			pins = "gpio30";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		reset-pins {
+			pins = "gpio6";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		te-pins {
+			pins = "gpio10";
+			function = "mdp_vsync";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+
 	tri_state_key_default: tri-state-key-default-state {
 		pins = "gpio40", "gpio42", "gpio26";
 		function = "gpio";

-- 
2.51.0