arm64: tegra: Support Jetson Orin NX

This adds a device tree for the Jetson Orin NX module, which is Jetson
AGX Orin's little sibling with 6 or 8 ARM Cortex-A78AE cores, an Ampere
GPU (1024 GPU and 32 tensor cores) and a number of accelerators for
machine learning, image processing and more.

The Jetson Orin NX comes with either 8 or 16 GiB of 128-bit LPDDR5 and
supports NVME for mass storage.

Signed-off-by: Thierry Reding <treding@nvidia.com>

Author: thierryreding

arch/arm64/boot/dts/nvidia/tegra234-p3767-0000.dtsi

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "tegra234-p3767.dtsi"
+
+/ {
+	compatible = "nvidia,p3767-0000", "nvidia,tegra234";
+	model = "NVIDIA Jetson Orin NX";
+
+	bus@0 {
+		hda@3510000 {
+			nvidia,model = "NVIDIA Jetson Orin NX HDA";
+		};
+	};
+};

arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi

@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "tegra234.dtsi"
+
+/ {
+	compatible = "nvidia,p3767", "nvidia,tegra234";
+
+	bus@0 {
+		i2c@3160000 {
+			status = "okay";
+
+			eeprom@50 {
+				compatible = "atmel,24c02";
+				reg = <0x50>;
+
+				label = "module";
+				vcc-supply = <&vdd_1v8_hs>;
+				address-width = <8>;
+				pagesize = <8>;
+				size = <256>;
+				read-only;
+			};
+		};
+
+		spi@3270000 {
+			status = "okay";
+
+			flash@0 {
+				compatible = "jedec,spi-nor";
+				reg = <0>;
+				spi-max-frequency = <136000000>;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+			};
+		};
+
+		/*
+		 * This only exists on Jetson Orin Nano Developer Kit (SKU 5)
+		 * but UEFI needs this and will remove it on devices where it
+		 * doesn't exist.
+		 */
+		mmc@3400000 {
+			status = "okay";
+			bus-width = <4>;
+			cd-gpios = <&gpio TEGRA234_MAIN_GPIO(G, 7) GPIO_ACTIVE_HIGH>;
+			disable-wp;
+		};
+
+		hda@3510000 {
+			status = "okay";
+		};
+
+		padctl@3520000 {
+			vclamp-usb-supply = <&vdd_1v8_ao>;
+			avdd-usb-supply = <&vdd_3v3_ao>;
+		};
+
+		rtc@c2a0000 {
+			status = "okay";
+		};
+
+		pmc@c360000 {
+			nvidia,invert-interrupt;
+		};
+	};
+
+	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;
+	};
+
+	vdd_1v8_hs: regulator-vdd-1v8-hs {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_1V8_HS";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	vdd_1v8_ao: regulator-vdd-1v8-ao {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_1V8_AO";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		vin-supply = <&vdd_5v0_sys>;
+	};
+
+	vdd_3v3_ao: regulator-vdd-3v3-ao {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_3V3_AO";
+		regulator-min-microvolt = <33000000>;
+		regulator-max-microvolt = <33000000>;
+		regulator-always-on;
+		vin-supply = <&vdd_5v0_sys>;
+	};
+
+	thermal-zones {
+		/*
+		 * This monitoring is far from optimal, but it's good enough
+		 * at this stage.
+		 */
+		cpu-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <1000>;
+			status = "okay";
+
+			trips {
+				critical {
+					temperature = <104500>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+
+				hot {
+					temperature = <99000>;
+					hysteresis = <1000>;
+					type = "hot";
+				};
+
+				board_trip_passive: passive {
+					temperature = <95000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				board_trip_active2: active-2 {
+					temperature = <80000>;
+					hysteresis = <4000>;
+					type = "active";
+				};
+
+				board_trip_active1: active-1 {
+					temperature = <65000>;
+					hysteresis = <4000>;
+					type = "active";
+				};
+
+				board_trip_active0: active-0 {
+					temperature = <50000>;
+					hysteresis = <4000>;
+					type = "active";
+				};
+			};
+
+			cooling-maps {
+				passive {
+					cooling-device = <&fan 3 3>;
+					trip = <&board_trip_passive>;
+				};
+
+				active2 {
+					cooling-device = <&fan 2 3>;
+					trip = <&board_trip_active2>;
+				};
+
+				active1 {
+					cooling-device = <&fan 1 2>;
+					trip = <&board_trip_active1>;
+				};
+
+				active0 {
+					cooling-device = <&fan 0 1>;
+					trip = <&board_trip_active0>;
+				};
+			};
+		};
+	};
+};