linux-kernel - [PATCH] arm64: dts: qcom: msm8916-samsung-a3u: add nodes for display panel

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Message-Id: <20200514170129.10902-1-michael.srba@seznam.cz>
Date:   Thu, 14 May 2020 19:01:29 +0200
From:   michael.srba@...nam.cz
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Michael Srba <michael.srba@...nam.cz>
Subject: [PATCH] arm64: dts: qcom: msm8916-samsung-a3u: add nodes for display panel

From: Michael Srba <michael.srba@...nam.cz>

This patch wires up display support on Samsung Galaxy A3 2015.

Signed-off-by: Michael Srba <michael.srba@...nam.cz>

---
 .../qcom/msm8916-samsung-a2015-common.dtsi    | 44 +++++++++++++++
 .../boot/dts/qcom/msm8916-samsung-a3u-eur.dts | 54 +++++++++++++++++++
 2 files changed, 98 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index af812f76e8be..2a64aa269f52 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -72,6 +72,24 @@ phy {
 			};
 		};
 
+		mdss@...0000 {
+			dsi@...8000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				vdda-supply = <&pm8916_l2>;
+				vddio-supply = <&pm8916_l6>;
+
+				pinctrl-names = "default", "sleep";
+				pinctrl-0 = <&mdss_default>;
+				pinctrl-1 = <&mdss_sleep>;
+			};
+
+			dsi-phy@...8300 {
+				vddio-supply = <&pm8916_l6>;
+			};
+		};
+
 		wcnss@...b000 {
 			status = "okay";
 		};
@@ -172,6 +190,32 @@ pinconf {
 			bias-disable;
 		};
 	};
+
+	pmx-mdss {
+		mdss_default: mdss-default {
+			pinmux {
+				function = "gpio";
+				pins = "gpio25";
+			};
+			pinconf {
+				pins = "gpio25";
+				drive-strength = <8>;
+				bias-disable;
+			};
+		};
+
+		mdss_sleep: mdss-sleep {
+			pinmux {
+				function = "gpio";
+				pins = "gpio25";
+			};
+			pinconf {
+				pins = "gpio25";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+		};
+	};
 };
 
 &smd_rpm_regulators {
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts
index d10f7ac5089f..b46c87289033 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts
@@ -7,4 +7,58 @@
 / {
 	model = "Samsung Galaxy A3U (EUR)";
 	compatible = "samsung,a3u-eur", "qcom,msm8916";
+
+	reg_panel_vdd3: regulator-panel-vdd3 {
+		compatible = "regulator-fixed";
+		regulator-name = "panel_vdd3";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+
+		gpio = <&msmgpio 9 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&panel_vdd3_default>;
+	};
+};
+
+&dsi0 {
+	panel@0 {
+		reg = <0>;
+
+		compatible = "samsung,s6e88a0-ams452ef01";
+
+		vdd3-supply = <&reg_panel_vdd3>;
+		vci-supply = <&pm8916_l17>;
+		reset-gpios = <&msmgpio 25 GPIO_ACTIVE_HIGH>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&dsi0_out>;
+			};
+		};
+	};
+
+	ports {
+		port@1 {
+			dsi0_out: endpoint {
+				remote-endpoint = <&panel_in>;
+				data-lanes = <0 1>;
+			};
+		};
+	};
+};
+
+&msmgpio {
+	panel_vdd3_default: panel-vdd3-default {
+		pinmux {
+			function = "gpio";
+			pins = "gpio9";
+		};
+		pinconf {
+			pins = "gpio9";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
 };
-- 
2.24.0