linux-kernel - [PATCH v1] arm64: dts: qcom: talos-evk: Add ADV7535 DSI-to-HDMI bridge

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Message-Id: <20251015122808.1986627-1-tessolveupstream@gmail.com>
Date: Wed, 15 Oct 2025 17:58:08 +0530
From: Sudarshan Shetty <tessolveupstream@...il.com>
To: andersson@...nel.org
Cc: konradybcio@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	tessolveupstream@...il.com
Subject: [PATCH v1] arm64: dts: qcom: talos-evk: Add ADV7535 DSI-to-HDMI bridge

Hook up the ADV7535 DSI-to-HDMI bridge on the QCS615 Talos EVK board.
This provides HDMI output through the external DSI-to-HDMI converter.

Signed-off-by: Sudarshan Shetty <tessolveupstream@...il.com>
---
 arch/arm64/boot/dts/qcom/talos-evk-som.dtsi | 21 ++++++
 arch/arm64/boot/dts/qcom/talos-evk.dts      | 76 +++++++++++++++++++++
 2 files changed, 97 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi b/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi
index 55ec8034103d..b58cae02c9cb 100644
--- a/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi
+++ b/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi
@@ -244,6 +244,27 @@ eeprom@5f {
 	};
 };
 
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vreg_l11a>;
+
+	status = "okay";
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&adv7535_in>;
+	data-lanes = <0 1 2 3>;
+};
+
+&mdss_dsi0_phy {
+	vdds-supply = <&vreg_l5a>;
+
+	status = "okay";
+};
+
 &pcie {
 	perst-gpios = <&tlmm 101 GPIO_ACTIVE_LOW>;
 	wake-gpios = <&tlmm 100 GPIO_ACTIVE_HIGH>;
diff --git a/arch/arm64/boot/dts/qcom/talos-evk.dts b/arch/arm64/boot/dts/qcom/talos-evk.dts
index 25057f4f6a91..f7e8be3667d1 100644
--- a/arch/arm64/boot/dts/qcom/talos-evk.dts
+++ b/arch/arm64/boot/dts/qcom/talos-evk.dts
@@ -14,6 +14,82 @@ / {
 	aliases {
 		mmc1 = &sdhc_2;
 	};
+
+	hdmi-out {
+		compatible = "hdmi-connector";
+		type = "d";
+
+		port {
+			hdmi_con_out: endpoint {
+				remote-endpoint = <&adv7535_out>;
+			};
+		};
+	};
+
+	vreg_v1p2_out: regulator-v1p2-out {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg-v1p2-out";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	vreg_v1p8_out: regulator-v1p8-out {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg-v1p8-out";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	vreg_v3p3_out: regulator-v3p3-out {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg-v3p3-out";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+&i2c1 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	adv7535: adv7535@3d {
+		compatible = "adi,adv7535";
+		reg = <0x3d>;
+		avdd-supply = <&vreg_v1p8_out>;
+		dvdd-supply = <&vreg_v1p8_out>;
+		pvdd-supply = <&vreg_v1p8_out>;
+		a2vdd-supply = <&vreg_v1p8_out>;
+		v3p3-supply = <&vreg_v3p3_out>;
+		v1p2-supply = <&vreg_v1p2_out>;
+		interrupts-extended = <&tlmm 26 IRQ_TYPE_LEVEL_LOW>;
+		adi,dsi-lanes = <4>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				adv7535_in: endpoint {
+					remote-endpoint = <&mdss_dsi0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				adv7535_out: endpoint {
+					remote-endpoint = <&hdmi_con_out>;
+				};
+			};
+		};
+	};
 };
 
 &pon_pwrkey {
-- 
2.34.1