From d5f5c089858f7accd1e4574c0c09d811e90eb51f Mon Sep 17 00:00:00 2001
From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Date: Tue, 16 Jun 2026 11:08:52 +0200
Subject: [PATCH] arm64: dts: qcom: sc8180x-lenovo-flex-5g: Describe the
 display power net

Describe and wire up the power supplies for the eDP panel and its
backlight. Previously, this was only working because of settings
inherited from the bootloader.

Fixes: 20dea72a393c ("arm64: dts: qcom: sc8180x: Introduce Lenovo Flex 5G")
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260616-topic-8180_disp_power-v2-4-167785993231@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---
 .../boot/dts/qcom/sc8180x-lenovo-flex-5g.dts  | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc8180x-lenovo-flex-5g.dts b/arch/arm64/boot/dts/qcom/sc8180x-lenovo-flex-5g.dts
index 0d2cfb830e83..7601afc3d7bf 100644
--- a/arch/arm64/boot/dts/qcom/sc8180x-lenovo-flex-5g.dts
+++ b/arch/arm64/boot/dts/qcom/sc8180x-lenovo-flex-5g.dts
@@ -26,6 +26,7 @@ backlight: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pmc8180c_lpg 4 1000000>;
 		enable-gpios = <&pmc8180c_gpios 8 GPIO_ACTIVE_HIGH>;
+		power-supply = <&vled_bl_pw>;
 
 		pinctrl-0 = <&bl_pwm_default>;
 		pinctrl-names = "default";
@@ -157,6 +158,38 @@ cdsp_mem: cdsp-region@98900000 {
 		};
 	};
 
+	vled_bl_pw: regulator-vled-bl-pw {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VLED_BL_PW";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&pmc8180_2_gpios 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&bl_pwr_en>;
+		pinctrl-names = "default";
+
+		regulator-boot-on;
+	};
+
+	vreg_lcm_3v3: regulator-edp-3p3 {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VREG_LCM_3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 130 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&lcm_3v3_en>;
+		pinctrl-names = "default";
+
+		regulator-boot-on;
+	};
+
 	vreg_s4a_1p8: regulator-pm8150-s4 {
 		compatible = "regulator-fixed";
 		regulator-name = "vreg_s4a_1p8";
@@ -438,6 +471,7 @@ &mdss_edp {
 	aux-bus {
 		panel {
 			compatible = "edp-panel";
+			power-supply = <&vreg_lcm_3v3>;
 			no-hpd;
 
 			backlight = <&backlight>;
@@ -472,6 +506,13 @@ &pcie3_phy {
 	status = "okay";
 };
 
+&pmc8180_2_gpios {
+	bl_pwr_en: bl-pwr-en-state {
+		pins = "gpio1";
+		function = "normal";
+	};
+};
+
 &pmc8180_pwrkey {
 	status = "okay";
 };
@@ -765,6 +806,12 @@ ts_int_default: ts-int-default-state {
 		drive-strength = <2>;
 	};
 
+	lcm_3v3_en: lcm-3v3-en-state {
+		pins = "gpio130";
+		function = "gpio";
+		bias-disable;
+	};
+
 	usbprim_sbu_default: usbprim-sbu-state {
 		oe-n-pins {
 			pins = "gpio152";