[PATCH 4/9] arm64: dts: airoha: en7581: add thermal sensor nodes

[Christian Marangi]

Add thermal sensor nodes and attach them to the CPU node to control passive
throttle and define critical temperature of the SoC.

Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx>
---
 arch/arm64/boot/dts/airoha/en7581.dtsi | 47 ++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/airoha/en7581.dtsi b/arch/arm64/boot/dts/airoha/en7581.dtsi
index fbc5ee47523c..58bd8b318910 100644
--- a/arch/arm64/boot/dts/airoha/en7581.dtsi
+++ b/arch/arm64/boot/dts/airoha/en7581.dtsi
@@ -4,6 +4,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/en7523-clk.h>
 #include <dt-bindings/reset/airoha,en7581-reset.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -81,6 +82,7 @@ cpu0: cpu@0 {
 			power-domains = <&cpufreq>;
 			power-domain-names = "perf";
 			next-level-cache = <&l2>;
+			#cooling-cells = <2>;
 		};
 
 		cpu1: cpu@1 {
@@ -94,6 +96,7 @@ cpu1: cpu@1 {
 			power-domains = <&cpufreq>;
 			power-domain-names = "perf";
 			next-level-cache = <&l2>;
+			#cooling-cells = <2>;
 		};
 
 		cpu2: cpu@2 {
@@ -107,6 +110,7 @@ cpu2: cpu@2 {
 			power-domains = <&cpufreq>;
 			power-domain-names = "perf";
 			next-level-cache = <&l2>;
+			#cooling-cells = <2>;
 		};
 
 		cpu3: cpu@3 {
@@ -120,6 +124,7 @@ cpu3: cpu@3 {
 			power-domains = <&cpufreq>;
 			power-domain-names = "perf";
 			next-level-cache = <&l2>;
+			#cooling-cells = <2>;
 		};
 
 		l2: l2-cache {
@@ -293,6 +298,39 @@ timer {
 			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
 	};
 
+	thermal-zones {
+		cpu_thermal: cpu-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+
+			thermal-sensors = <&thermal 0>;
+
+			trips {
+				cpu_hot: cpu-hot {
+					temperature = <95000>;
+					hysteresis = <1000>;
+					type = "hot";
+				};
+
+				cpu-critical {
+					temperature = <120000>;
+					hysteresis = <1000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_hot>;
+					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>;
+				};
+			};
+		};
+	};
+
 	clk20m: clock-20000000 {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -319,6 +357,15 @@ gic: interrupt-controller@9000000 {
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW>;
 		};
 
+		thermal: thermal-sensor@1efbd000 {
+			compatible = "airoha,en7581-thermal";
+			reg = <0x0 0x1efbd000 0x0 0xd5c>;
+			interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
+			airoha,chip-scu = <&chip_scu>;
+
+			#thermal-sensor-cells = <0>;
+		};
+
 		spi@1fa10000 {
 			compatible = "airoha,en7581-snand";
 			reg = <0x0 0x1fa10000 0x0 0x140>,
-- 
2.55.0