[PATCH 7/8] arm64: dts: amlogic: t7: Add thermal zones

Ronald Claveau linux-kernel-dev at aliel.fr
Fri Apr 10 09:48:08 PDT 2026


Add thermal zones for all six sensors: a53, a73, gpu, nna, vpu, and hevc.

Signed-off-by: Ronald Claveau <linux-kernel-dev at aliel.fr>
---
 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 179 ++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
index 62f259b2b17d2..c6ea0f20a879f 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
@@ -9,6 +9,7 @@
 #include <dt-bindings/clock/amlogic,t7-scmi.h>
 #include <dt-bindings/clock/amlogic,t7-pll-clkc.h>
 #include <dt-bindings/clock/amlogic,t7-peripherals-clkc.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -829,6 +830,184 @@ hevc_tsensor: temperature-sensor at 9a000 {
 				amlogic,secure-monitor = <&sm 5>;
 			};
 		};
+	};
+
+	thermal-zones {
+		a53_thermal: a53-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&a53_tsensor>;
+
+			trips {
+				a53_passive: a53-passive {
+					temperature = <85000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "passive";
+				};
+
+				a53_hot: a53-hot {
+					temperature = <95000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "hot";
+				};
+
+				a53_critical: a53-critical {
+					temperature = <110000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map-a53 {
+					trip = <&a53_passive>;
+					cooling-device =
+						<&cpu100 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&cpu101 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&cpu102 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&cpu103 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+
+		a73_thermal: a73-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&a73_tsensor>;
+
+			trips {
+				a73_passive: a73-passive {
+					temperature = <85000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "passive";
+				};
+
+				a73_hot: a73-hot {
+					temperature = <95000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "hot";
+				};
+
+				a73_critical: a73-critical {
+					temperature = <110000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map-a73 {
+					trip = <&a73_passive>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+
+		gpu_thermal: gpu-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&gpu_tsensor>;
+
+			trips {
+				gpu_passive: gpu-passive {
+					temperature = <95000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				gpu_hot: gpu-hot {
+					temperature = <105000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
 
+				gpu_critical: gpu-critical {
+					temperature = <115000>;
+					hysteresis = <1000>;
+					type = "critical";
+				};
+			};
+		};
+
+		hevc_thermal: hevc-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&hevc_tsensor>;
+
+			trips {
+				hevc_passive: hevc-passive {
+					temperature = <95000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				hevc_hot: hevc-hot {
+					temperature = <105000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				hevc_critical: hevc-critical {
+					temperature = <115000>;
+					hysteresis = <1000>;
+					type = "critical";
+				};
+			};
+		};
+
+		nna_thermal: nna-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&nna_tsensor>;
+
+			trips {
+				nna_passive: nna-passive {
+					temperature = <95000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				nna_hot: nna-hot {
+					temperature = <105000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				nna_critical: nna-critical {
+					temperature = <115000>;
+					hysteresis = <1000>;
+					type = "critical";
+				};
+			};
+		};
+
+		vpu_thermal: vpu-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&vpu_tsensor>;
+
+			trips {
+				vpu_passive: vpu-passive {
+					temperature = <95000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				vpu_hot: vpu-hot {
+					temperature = <105000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				vpu_critical: vpu-critical {
+					temperature = <115000>;
+					hysteresis = <1000>;
+					type = "critical";
+				};
+			};
+		};
 	};
 };

-- 
2.49.0




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