From c5fc330ec4a389bbcbeee3156ba31e4a3dbecfe3 Mon Sep 17 00:00:00 2001
From: Aaron Kling <webgeek1234@gmail.com>
Date: Thu, 8 May 2025 19:52:04 -0500
Subject: [PATCH] arm64: tegra: Enable HDMI on P2571

Add regulators and enable the host1x nodes necessary to attain video
output via hdmi.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
---
 arch/arm64/boot/dts/nvidia/tegra210-p2571.dts | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2571.dts b/arch/arm64/boot/dts/nvidia/tegra210-p2571.dts
index 812925582fb2..cdfc18a1a8ee 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2571.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2571.dts
@@ -8,6 +8,24 @@
 	model = "NVIDIA Tegra210 P2571 reference design";
 	compatible = "nvidia,p2571", "nvidia,tegra210";
 
+	host1x@50000000 {
+		dpaux@54040000 {
+			status = "okay";
+		};
+
+		sor@54580000 {
+			status = "okay";
+
+			avdd-io-hdmi-dp-supply = <&avdd_1v05>;
+			vdd-hdmi-dp-pll-supply = <&vdd_1v8>;
+			hdmi-supply = <&vdd_hdmi>;
+
+			nvidia,ddc-i2c-bus = <&hdmi_ddc>;
+			nvidia,hpd-gpio = <&gpio TEGRA_GPIO(CC, 1)
+					   GPIO_ACTIVE_LOW>;
+		};
+	};
+
 	pinmux: pinmux@700008d4 {
 		pinctrl-names = "boot";
 		pinctrl-0 = <&state_boot>;
@@ -1315,6 +1333,12 @@
 		};
 	};
 
+	/* HDMI DDC */
+	hdmi_ddc: i2c@7000c700 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
 	usb@70090000 {
 		phys = <&{/padctl@7009f000/pads/usb2/lanes/usb2-0}>,
 		       <&{/padctl@7009f000/pads/usb2/lanes/usb2-1}>,
@@ -2746,6 +2770,28 @@
 		regulator-boot-on;
 	};
 
+	vdd_5v0_sys: regulator-vdd-5v0-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_5V0_SYS";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+		gpio = <&pmic 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&vdd_sys_mux>;
+	};
+
+	vdd_hdmi: regulator-vdd-hdmi {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_HDMI_5V0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio TEGRA_GPIO(CC, 7) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&vdd_5v0_sys>;
+	};
+
 	vdd_usb_vbus0: regulator-vdd-usb-vbus0 {
 		compatible = "regulator-fixed";
 		regulator-name = "USB_VBUS_EN0";