linux-kernel - [PATCH 5/7] arm64: dts: ti: k3-j721s2-som-p0: add DSI to eDP

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Message-ID: <20250411105155.303657-6-j-choudhary@ti.com>
Date: Fri, 11 Apr 2025 16:21:53 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: <nm@...com>, <vigneshr@...com>, <u-kumar1@...com>, <devarsht@...com>,
        <linux-kernel@...r.kernel.org>
CC: <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <kristo@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <j-choudhary@...com>
Subject: [PATCH 5/7] arm64: dts: ti: k3-j721s2-som-p0: add DSI to eDP

From: Rahul T R <r-ravikumar@...com>

Add DT nodes for DSI to eDP bridge. The DSI to eDP
bridge is SN65DSI86 on SOM.

Signed-off-by: Rahul T R <r-ravikumar@...com>
Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
 arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi | 52 ++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
index 6adb2bbe4066..421c1468ba90 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
@@ -160,6 +160,30 @@ transceiver0: can-phy0 {
 		#phy-cells = <0>;
 		max-bitrate = <5000000>;
 	};
+
+	vsys_io_1v8: regulator-vsys-io-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_io_1v8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vsys_io_1v2: regulator-vsys-io-1v2 {
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_io_1v2";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	edp1_refclk: clock-edp1-refclk {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <19200000>;
+	};
 };
 
 &wkup_pmx0 {
@@ -638,3 +662,31 @@ &c71_1 {
 	memory-region = <&c71_1_dma_memory_region>,
 			<&c71_1_memory_region>;
 };
+
+&main_i2c4 {
+	dsi_edp_bridge: dsi-edp-bridge@2c {
+		compatible = "ti,sn65dsi86";
+		reg = <0x2c>;
+
+		clock-names = "refclk";
+		clocks = <&edp1_refclk>;
+
+		enable-gpios = <&exp_som 5 0>;
+
+		vpll-supply = <&vsys_io_1v8>;
+		vccio-supply = <&vsys_io_1v8>;
+		vcca-supply = <&vsys_io_1v2>;
+		vcc-supply = <&vsys_io_1v2>;
+
+		dsi_edp_bridge_ports: ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			port@0 {
+				reg = <0>;
+			};
+			port@1 {
+				reg = <1>;
+			};
+		};
+	};
+};
-- 
2.34.1