arm64: tegra: Add Tegra234 thermal support

Add device tree node for the BPMP thermal node on Tegra234 and add
thermal zone definitions.
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

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

@@ -8,6 +8,7 @@
 #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
 #include <dt-bindings/power/tegra234-powergate.h>
 #include <dt-bindings/reset/tegra234-reset.h>
+#include <dt-bindings/thermal/tegra234-bpmp-thermal.h>
 
 / {
 	compatible = "nvidia,tegra234";
@@ -3027,6 +3028,11 @@ bpmp_i2c: i2c {
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};
+
+		bpmp_thermal: thermal {
+			compatible = "nvidia,tegra186-bpmp-thermal";
+			#thermal-sensor-cells = <1>;
+		};
 	};
 
 	cpus {
@@ -3517,6 +3523,53 @@ sound {
 					 <&bpmp TEGRA234_CLK_PLLA_OUT0>;
 	};
 
+	thermal-zones {
+		cpu-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_CPU>;
+			status = "disabled";
+		};
+
+		gpu-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_GPU>;
+			status = "disabled";
+		};
+
+		cv0-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_CV0>;
+			status = "disabled";
+		};
+
+		cv1-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_CV1>;
+			status = "disabled";
+		};
+
+		cv2-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_CV2>;
+			status = "disabled";
+		};
+
+		soc0-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_SOC0>;
+			status = "disabled";
+		};
+
+		soc1-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_SOC1>;
+			status = "disabled";
+		};
+
+		soc2-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_SOC2>;
+			status = "disabled";
+		};
+
+		tj-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA234_BPMP_THERMAL_ZONE_TJ_MAX>;
+			status = "disabled";
+		};
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,

include/dt-bindings/thermal/tegra234-bpmp-thermal.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides constants for binding nvidia,tegra234-bpmp-thermal.
+ */
+
+#ifndef _DT_BINDINGS_THERMAL_TEGRA234_BPMP_THERMAL_H
+#define _DT_BINDINGS_THERMAL_TEGRA234_BPMP_THERMAL_H
+
+#define TEGRA234_BPMP_THERMAL_ZONE_CPU		0
+#define TEGRA234_BPMP_THERMAL_ZONE_GPU		1
+#define TEGRA234_BPMP_THERMAL_ZONE_CV0		2
+#define TEGRA234_BPMP_THERMAL_ZONE_CV1		3
+#define TEGRA234_BPMP_THERMAL_ZONE_CV2		4
+#define TEGRA234_BPMP_THERMAL_ZONE_SOC0		5
+#define TEGRA234_BPMP_THERMAL_ZONE_SOC1		6
+#define TEGRA234_BPMP_THERMAL_ZONE_SOC2		7
+#define TEGRA234_BPMP_THERMAL_ZONE_TJ_MAX	8
+
+#endif