linux-kernel - [PATCH v5 3/9] arm64: dts: qcom: sc7280: Enable backlight for eDP panel

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Date:   Wed, 16 Mar 2022 23:05:48 +0530
From:   Sankeerth Billakanti <quic_sbillaka@...cinc.com>
To:     <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
CC:     Sankeerth Billakanti <quic_sbillaka@...cinc.com>,
        <robdclark@...il.com>, <seanpaul@...omium.org>,
        <swboyd@...omium.org>, <quic_kalyant@...cinc.com>,
        <quic_abhinavk@...cinc.com>, <dianders@...omium.org>,
        <quic_khsieh@...cinc.com>, <agross@...nel.org>,
        <bjorn.andersson@...aro.org>, <robh+dt@...nel.org>,
        <krzk+dt@...nel.org>, <sean@...rly.run>, <airlied@...ux.ie>,
        <daniel@...ll.ch>, <thierry.reding@...il.com>, <sam@...nborg.org>,
        <dmitry.baryshkov@...aro.org>, <quic_vproddut@...cinc.com>
Subject: [PATCH v5 3/9] arm64: dts: qcom: sc7280: Enable backlight for eDP panel

Enable backlight support for eDP panel on CRD platform for sc7280.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@...cinc.com>
---

Changes in v5:
  - Separate out backlight nodes

 arch/arm64/boot/dts/qcom/sc7280-crd.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd.dts b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
index 2df654e..16d1a5b 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-crd.dts
+++ b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
@@ -37,6 +37,15 @@
 		pinctrl-0 = <&edp_panel_power>;
 	};
 
+	edp_backlight: edp-backlight {
+		compatible = "pwm-backlight";
+
+		power-supply = <&vreg_edp_bp>;
+		pwms = <&pm8350c_pwm 3 65535>;
+
+		enable-gpios = <&pm8350c_gpios 7 GPIO_ACTIVE_HIGH>;
+	};
+
 	vreg_edp_bp: vreg-edp-bp-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vreg_edp_bp";
@@ -123,7 +132,9 @@ ap_ts_pen_1v8: &i2c13 {
 		edp_panel: edp-panel {
 			compatible = "edp-panel";
 
+			backlight = <&edp_backlight>;
 			power-supply = <&edp_3v3_regulator>;
+
 			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;
@@ -172,6 +183,13 @@ ap_ts_pen_1v8: &i2c13 {
 	};
 };
 
+&pm8350c_pwm {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&edp_bl_pwm>;
+};
+
 &tlmm {
 	edp_panel_power: edp-panel-power {
 		pins = "gpio80";
-- 
2.7.4