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arm64: dts: qcom: sc8180x-primus: Describe the display power net

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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: 2ce38cc1e8 ("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>
This commit is contained in:
Konrad Dybcio 2026-06-16 11:08:50 +02:00 committed by Bjorn Andersson
parent ae51d9396f
commit 80bf2eb87b
1 changed files with 47 additions and 1 deletions
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48
arch/arm64/boot/dts/qcom/sc8180x-primus.dts
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@ -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;
};
};