From 80bf2eb87bfbf1b7bc7b12228cbcc710b0a26275 Mon Sep 17 00:00:00 2001
From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Date: Tue, 16 Jun 2026 11:08:50 +0200
Subject: [PATCH] arm64: dts: qcom: sc8180x-primus: 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: 2ce38cc1e8fe ("arm64: dts: qcom: sc8180x: Introduce Primus")
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260616-topic-8180_disp_power-v2-2-167785993231@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---
 arch/arm64/boot/dts/qcom/sc8180x-primus.dts | 48 ++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8180x-primus.dts b/arch/arm64/boot/dts/qcom/sc8180x-primus.dts
index ffe7c45366ed..e34f4758ebe2 100644
--- a/arch/arm64/boot/dts/qcom/sc8180x-primus.dts
+++ b/arch/arm64/boot/dts/qcom/sc8180x-primus.dts
@@ -29,9 +29,10 @@ backlight: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pmc8180c_lpg 4 1000000>;
 		enable-gpios = <&pmc8180c_gpios 8 GPIO_ACTIVE_HIGH>;
+		power-supply = <&vled_bl_pw>;
 
-		pinctrl-names = "default";
 		pinctrl-0 = <&bl_pwm_default>;
+		pinctrl-names = "default";
 	};
 
 	chosen {
@@ -167,6 +168,38 @@ reserved-region@9a500000 {
 		};
 	};
 
+	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_nvme_0p9: regulator-nvme-0p9 {
 		compatible = "regulator-fixed";
 		regulator-name = "vreg_nvme_0p9";
@@ -540,6 +573,7 @@ &mdss_edp {
 	aux-bus {
 		panel {
 			compatible = "edp-panel";
+			power-supply = <&vreg_lcm_3v3>;
 
 			backlight = <&backlight>;
 
@@ -769,6 +803,12 @@ &wifi {
 };
 
 /* PINCTRL */
+&pmc8180_2_gpios {
+	bl_pwr_en: bl-pwr-en-state {
+		pins = "gpio1";
+		function = "normal";
+	};
+};
 
 &pmc8180c_gpios {
 	bl_pwm_default: bl-pwm-default-state {
@@ -950,4 +990,10 @@ rx-pins {
 			bias-pull-up;
 		};
 	};
+
+	lcm_3v3_en: lcm-3v3-en-state {
+		pins = "gpio130";
+		function = "gpio";
+		bias-disable;
+	};
 };