[PATCH v2 2/3] arm64: tegra: Add thermal zones for Tegra264

[Thierry Reding]

From: Thierry Reding <treding@xxxxxxxxxx>

Add the thermal zones exposed by the BPMP on Tegra264 so that cooling
devices can be attached to them in board-level DTS files.

Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
Changes in v2:
- move thermal header below DTS directory
- fix typo in include guard comment
---
 arch/arm64/boot/dts/nvidia/tegra264.dtsi           | 29 ++++++++++++++++++++++
 .../boot/dts/nvidia/thermal/nvidia,tegra264-bpmp.h | 20 +++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra264.dtsi b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
index 630c20523dcf..953d50af0c08 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
@@ -7,6 +7,8 @@
 #include <dt-bindings/power/nvidia,tegra264-bpmp.h>
 #include <dt-bindings/reset/nvidia,tegra264.h>
 
+#include "thermal/nvidia,tegra264-bpmp.h"
+
 / {
 	compatible = "nvidia,tegra264";
 	interrupt-parent = <&gic>;
@@ -4625,6 +4627,33 @@ sound {
 		status = "disabled";
 	};
 
+	thermal-zones {
+		cpu-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA264_THERMAL_ZONE_CPU_MAX>;
+			status = "disabled";
+		};
+
+		gpu-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA264_THERMAL_ZONE_GPU_MAX>;
+			status = "disabled";
+		};
+
+		soc012-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA264_THERMAL_ZONE_SOC_012_MAX>;
+			status = "disabled";
+		};
+
+		soc345-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA264_THERMAL_ZONE_SOC_345_MAX>;
+			status = "disabled";
+		};
+
+		tj-thermal {
+			thermal-sensors = <&{/bpmp/thermal} TEGRA264_THERMAL_ZONE_TJ_MAX>;
+			status = "disabled";
+		};
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
diff --git a/arch/arm64/boot/dts/nvidia/thermal/nvidia,tegra264-bpmp.h b/arch/arm64/boot/dts/nvidia/thermal/nvidia,tegra264-bpmp.h
new file mode 100644
index 000000000000..29695881f4cc
--- /dev/null
+++ b/arch/arm64/boot/dts/nvidia/thermal/nvidia,tegra264-bpmp.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/* SPDX-FileCopyrightText: Copyright (c) 2023-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
+
+#ifndef DT_BINDINGS_THERMAL_NVIDIA_TEGRA264_BPMP_H
+#define DT_BINDINGS_THERMAL_NVIDIA_TEGRA264_BPMP_H
+
+#define TEGRA264_THERMAL_ZONE_TJ_MAX		0
+#define TEGRA264_THERMAL_ZONE_TJ_MIN		1
+#define TEGRA264_THERMAL_ZONE_GPU_AVG		2
+#define TEGRA264_THERMAL_ZONE_CPU_AVG		3
+#define TEGRA264_THERMAL_ZONE_SOC_012_AVG	4
+#define TEGRA264_THERMAL_ZONE_SOC_45_AVG	5
+#define TEGRA264_THERMAL_ZONE_SOC_3_AVG		6
+#define TEGRA264_THERMAL_ZONE_GPU_MAX		7
+#define TEGRA264_THERMAL_ZONE_CPU_MAX		8
+#define TEGRA264_THERMAL_ZONE_SOC_012_MAX	9
+#define TEGRA264_THERMAL_ZONE_SOC_345_MAX	10
+#define TEGRA264_THERMAL_ZONE_TJ_AVG		11
+
+#endif /* DT_BINDINGS_THERMAL_NVIDIA_TEGRA264_BPMP_H */

-- 
2.55.0