linux-kernel - [PATCH v4 3/7] arm64: dts: qcom: sdm845-oneplus: Update compatbible and add DDIC supplies

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Message-Id: <20251021-s6e3fc2x01-v4-3-5e3ee21c688a@ixit.cz>
Date: Tue, 21 Oct 2025 13:53:03 +0200
From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@...nel.org>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 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>, 
 Jessica Zhang <jesszhan0024@...il.com>
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>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Subject: [PATCH v4 3/7] arm64: dts: qcom: sdm845-oneplus: Update
 compatbible and add DDIC supplies

From: Casey Connolly <casey.connolly@...aro.org>

Update the compatible to reflect combination of DDIC and panel.

Original compatible describing only the DDIC used, but omit describing
the panel used (Samsung AMS641RW), which we have no way to detect.

There are two additional supplies used by the panel, both are GPIO
controlled and are left enabled by the bootloader for continuous splash.

Previously these were (incorrectly) modelled as pinctrl. Describe them
properly so that the panel can control them.

Fixes: 288ef8a42612 ("arm64: dts: sdm845: add oneplus6/6t devices")
Signed-off-by: Casey Connolly <casey.connolly@...aro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Co-developed-by: David Heidelberg <david@...t.cz>
Signed-off-by: David Heidelberg <david@...t.cz>
---
 .../arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi | 46 +++++++++++++++++++++-
 arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts |  2 +-
 2 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
index dcfffb271fcf3..1cf03047dd7ae 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
@@ -162,6 +162,34 @@ ts_1p8_supply: ts-1p8-regulator {
 		enable-active-high;
 		regulator-boot-on;
 	};
+
+	panel_vci_3v3: panel-vci-3v3-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "LCD_VCI_3V";
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 26 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		pinctrl-0 = <&panel_vci_default>;
+		pinctrl-names = "default";
+		regulator-boot-on;
+	};
+
+	panel_vddi_poc_1p8: panel-vddi-poc-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "VDDI_POC";
+
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+
+		gpio = <&tlmm 25 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		pinctrl-0 = <&panel_poc_default>;
+		pinctrl-names = "default";
+		regulator-boot-on;
+	};
 };
 
 &adsp_pas {
@@ -429,6 +457,8 @@ display_panel: panel@0 {
 		reg = <0>;
 
 		vddio-supply = <&vreg_l14a_1p88>;
+		vci-supply = <&panel_vci_3v3>;
+		poc-supply = <&panel_vddi_poc_1p8>;
 
 		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
 
@@ -803,6 +833,20 @@ hall_sensor_default: hall-sensor-default-state {
 		bias-disable;
 	};
 
+	panel_vci_default: vci-state {
+		pins = "gpio26";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+	};
+
+	panel_poc_default: poc-state {
+		pins = "gpio25";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+	};
+
 	tri_state_key_default: tri-state-key-default-state {
 		pins = "gpio40", "gpio42", "gpio26";
 		function = "gpio";
@@ -818,7 +862,7 @@ ts_default_pins: ts-int-state {
 	};
 
 	panel_reset_pins: panel-reset-state {
-		pins = "gpio6", "gpio25", "gpio26";
+		pins = "gpio6";
 		function = "gpio";
 		drive-strength = <8>;
 		bias-disable;
diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts b/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts
index 7e75decfda052..d6cd873aef0de 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dts
@@ -32,7 +32,7 @@ battery: battery {
 &display_panel {
 	status = "okay";
 
-	compatible = "samsung,s6e3fc2x01";
+	compatible = "samsung,s6e3fc2x01-ams641rw", "samsung,s6e3fc2x01";
 };
 
 &i2c4 {

-- 
2.51.0