linux-kernel - [PATCH v2 3/3] arm64: dts: qcom: sdm845-xiaomi-beryllium: enable qcom wled backlight and link to panel

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Message-ID: <BY5PR02MB70092607CD7CDD8CF8BCD464D9E09@BY5PR02MB7009.namprd02.prod.outlook.com>
Date:   Fri,  1 Apr 2022 05:48:10 +0530
From:   Joel Selvaraj <jo@...amily.in>
To:     Sumit Semwal <sumit.semwal@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Amit Pundir <amit.pundir@...aro.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Joel Selvaraj <jo@...amily.in>
Subject: [PATCH v2 3/3] arm64: dts: qcom: sdm845-xiaomi-beryllium: enable qcom wled backlight and link to panel

Xiaomi Poco F1 uses the QCOM WLED driver for backlight control.
Enable and link it to the panel to use it.

Signed-off-by: Joel Selvaraj <jo@...amily.in>
---
Changes in v2:
 - Remove qcom,enabled-strings property as either it or qcom,num-strings
   should be present. qcom,num-strings is specified and sufficient.
   (Marijn Suijten's Suggestion)

 arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
index 798fc72578a7..d88dc07205f7 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
@@ -231,6 +231,7 @@ panel@0 {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		backlight = <&pmi8998_wled>;
 		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
 
 		port {
@@ -314,6 +315,17 @@ vol_up_pin_a: vol-up-active {
 	};
 };
 
+&pmi8998_wled {
+	status = "okay";
+	qcom,current-boost-limit = <970>;
+	qcom,ovp-millivolt = <29600>;
+	qcom,current-limit-microamp = <20000>;
+	qcom,num-strings = <2>;
+	qcom,switching-freq = <600>;
+	qcom,external-pfet;
+	qcom,cabc;
+};
+
 &pm8998_pon {
 	resin {
 		compatible = "qcom,pm8941-resin";
-- 
2.35.1