diff mbox series

[v2] riscv: dts: allwinner: d1: Add CPU thermal sensor and zone

Message ID 20260113182951.1059690-1-lukas.schmid@netcube.li (mailing list archive)
State New
Headers
Series [v2] riscv: dts: allwinner: d1: Add CPU thermal sensor and zone |

Commit Message

Lukas Schmid Jan. 13, 2026, 6:29 p.m. UTC 
From: Alex Studer <alex@studer.dev>

The sun20i THS (built in CPU thermal sensor) is supported in code, but
was never added to the device tree. So, add it to the device tree,
along with a thermal zone for the CPU.

Signed-off-by: Alex Studer <alex@studer.dev>

Link: https://lore.kernel.org/r/20250218020629.1476126-1-alex@studer.dev
Changes since v1:
 - Move include before defines in sun20i-d1s.dtsi
 - Fix register size for thermal-sensor@2009400
 - Move thermal-sensor@2009400 in SoC to match register address sorting
 - Add thermal-zone for sun8i-t113s.dtsi and fix missing cooling-cells
Signed-off-by: Lukas Schmid <lukas.schmid@netcube.li>
---
 arch/arm/boot/dts/allwinner/sun8i-t113s.dtsi  | 33 +++++++++++++++++++
 arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 31 +++++++++++++++++
 .../boot/dts/allwinner/sunxi-d1s-t113.dtsi    | 16 +++++++++
 3 files changed, 80 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/allwinner/sun8i-t113s.dtsi b/arch/arm/boot/dts/allwinner/sun8i-t113s.dtsi
index c7181308ae6f..424f4a2487e2 100644
--- a/arch/arm/boot/dts/allwinner/sun8i-t113s.dtsi
+++ b/arch/arm/boot/dts/allwinner/sun8i-t113s.dtsi
@@ -4,6 +4,7 @@ 
 #define SOC_PERIPHERAL_IRQ(nr) GIC_SPI nr
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>
 #include <riscv/allwinner/sunxi-d1s-t113.dtsi>
 #include <riscv/allwinner/sunxi-d1-t113.dtsi>
 
@@ -20,6 +21,7 @@  cpu0: cpu@0 {
 			reg = <0>;
 			clocks = <&ccu CLK_CPUX>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu1: cpu@1 {
@@ -28,6 +30,7 @@  cpu1: cpu@1 {
 			reg = <1>;
 			clocks = <&ccu CLK_CPUX>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 	};
 
@@ -56,4 +59,34 @@  pmu {
 			     <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-affinity = <&cpu0>, <&cpu1>;
 	};
+
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&ths>;
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
+			trips {
+				cpu_alert: cpu-alert {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu-crit {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+		};
+	};
 };
diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
index a7442a508433..3f4ee820ef56 100644
--- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
+++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
@@ -1,6 +1,8 @@ 
 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 // Copyright (C) 2021-2022 Samuel Holland <samuel@sholland.org>
 
+#include <dt-bindings/thermal/thermal.h>
+
 #define SOC_PERIPHERAL_IRQ(nr)	(nr + 16)
 
 #include "sunxi-d1s-t113.dtsi"
@@ -115,4 +117,33 @@  pmu {
 			<0x00000000 0x0000000e 0xffffffff 0xffffffff 0x00010000>,
 			<0x00000000 0x0000000f 0xffffffff 0xffffffff 0x00020000>;
 	};
+
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&ths>;
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
+			trips {
+				cpu_alert: cpu-alert {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu-crit {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+		};
+	};
 };
diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
index 63e252b44973..ef7ebeab21ea 100644
--- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
+++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
@@ -214,6 +214,18 @@  gpadc: adc@2009000 {
 			#io-channel-cells = <1>;
 		};
 
+		ths: thermal-sensor@2009400 {
+			compatible = "allwinner,sun20i-d1-ths";
+			reg = <0x2009400 0x400>;
+			interrupts = <SOC_PERIPHERAL_IRQ(58) IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_THS>;
+			clock-names = "bus";
+			resets = <&ccu RST_BUS_THS>;
+			nvmem-cells = <&ths_calibration>;
+			nvmem-cell-names = "calibration";
+			#thermal-sensor-cells = <0>;
+		};
+
 		dmic: dmic@2031000 {
 			compatible = "allwinner,sun20i-d1-dmic",
 				     "allwinner,sun50i-h6-dmic";
@@ -474,6 +486,10 @@  sid: efuse@3006000 {
 			reg = <0x3006000 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+
+			ths_calibration: thermal-sensor-calibration@14 {
+				reg = <0x14 0x8>;
+			};
 		};
 
 		crypto: crypto@3040000 {