linux-kernel - [PATCH v3 3/3] arm64: dts: renesas: r8a779a0: falcon-cpu: Add DSI display output

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Date:   Thu, 23 Sep 2021 02:04:02 +0100
From:   Kieran Bingham <kieran.bingham@...asonboard.com>
To:     linux-renesas-soc@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Geert Uytterhoeven <geert@...der.be>
Cc:     Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 3/3] arm64: dts: renesas: r8a779a0: falcon-cpu: Add DSI display output

From: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>

Provide the display output using the sn65dsi86 MIPI DSI bridge

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
---
v3:
 - Fix the voltage regulator values
 - No longer override the clocks
 - use clk-x6 as clock node name

 .../boot/dts/renesas/r8a779a0-falcon-cpu.dtsi | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
index a0a1a1da0d87..9943f09a5cc6 100644
--- a/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
@@ -66,6 +66,15 @@ memory@...000000 {
 		reg = <0x7 0x00000000 0x0 0x80000000>;
 	};
 
+	reg_1p2v: regulator-1p2v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.2V";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
 	reg_1p8v: regulator-1p8v {
 		compatible = "regulator-fixed";
 		regulator-name = "fixed-1.8V";
@@ -83,6 +92,41 @@ reg_3p3v: regulator-3p3v {
 		regulator-boot-on;
 		regulator-always-on;
 	};
+
+	mini-dp-con {
+		compatible = "dp-connector";
+		label = "CN5";
+		type = "mini";
+
+		port {
+			mini_dp_con_in: endpoint {
+				remote-endpoint = <&sn65dsi86_out>;
+			};
+		};
+	};
+
+	sn65dsi86_refclk: clk-x6 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <38400000>;
+	};
+};
+
+&dsi0 {
+	status = "okay";
+
+	ports {
+		port@1 {
+			endpoint {
+				remote-endpoint = <&sn65dsi86_in>;
+				data-lanes = <1 2 3 4>;
+			};
+		};
+	};
+};
+
+&du {
+	status = "okay";
 };
 
 &extal_clk {
@@ -114,6 +158,41 @@ &i2c1 {
 
 	status = "okay";
 	clock-frequency = <400000>;
+
+	sn65dsi86@2c {
+		compatible = "ti,sn65dsi86";
+		reg = <0x2c>;
+
+		clocks = <&sn65dsi86_refclk>;
+		clock-names = "refclk";
+
+		interrupt-parent = <&gpio1>;
+		interrupts = <24 IRQ_TYPE_LEVEL_HIGH>;
+
+		vccio-supply = <&reg_1p8v>;
+		vpll-supply = <&reg_1p8v>;
+		vcca-supply = <&reg_1p2v>;
+		vcc-supply = <&reg_1p2v>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				sn65dsi86_in: endpoint {
+					remote-endpoint = <&dsi0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				sn65dsi86_out: endpoint {
+					remote-endpoint = <&mini_dp_con_in>;
+				};
+			};
+		};
+	};
 };
 
 &i2c6 {
-- 
2.30.2