[PATCH v3 3/3] riscv: dts: spacemit: Add thermal sensor for K1 SoC

Shuwei Wu
2026-01-19T02:42:42Z

Include the Thermal Sensor node in the SpacemiT K1 dtsi
with definitions for registers, clocks, and interrupts.
Additionally, configure thermal zones for the soc, package, gpu, and
clusters to enable temperature monitoring via the thermal framework.

Signed-off-by: Shuwei Wu <shuweiwoo@163.com>
---
Changes in v2:
- Update compatible to "spacemit,k1-tsensor"
---
arch/riscv/boot/dts/spacemit/k1.dtsi | 101 +++++++++++++++++++++++++++++++++++
1 file changed, 101 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index 7818ca4979b6..0fe7396ea6e4 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -338,6 +338,96 @@ osc_32k: clock-32k {
};
};

+ thermal-zones {
+ soc-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&thermal 0>;
+
+ trips {
+ soc-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ package-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&thermal 1>;
+
+ trips {
+ package-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ gpu-thermal {
+ polling-delay-passive = <100>;
+ polling-delay = <0>;
+ thermal-sensors = <&thermal 2>;
+
+ trips {
+ gpu-alert {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ gpu-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ cluster0-thermal {
+ polling-delay-passive = <100>;
+ polling-delay = <0>;
+ thermal-sensors = <&thermal 3>;
+
+ trips {
+ cluster0-alert {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cluster0-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ cluster1-thermal {
+ polling-delay-passive = <100>;
+ polling-delay = <0>;
+ thermal-sensors = <&thermal 4>;
+
+ trips {
+ cluster1-alert {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cluster1-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+ };
+
soc {
compatible = "simple-bus";
interrupt-parent = <&plic>;
@@ -434,6 +524,17 @@ syscon_apbc: system-controller@d4015000 {
#reset-cells = <1>;
};

+ thermal: thermal@d4018000 {
+ compatible = "spacemit,k1-tsensor";
+ reg = <0x0 0xd4018000 0x0 0x100>;
+ clocks = <&syscon_apbc CLK_TSEN>,
+ <&syscon_apbc CLK_TSEN_BUS>;
+ clock-names = "core", "bus";
+ interrupts = <61>;
+ resets = <&syscon_apbc RESET_TSEN>;
+ #thermal-sensor-cells = <1>;
+ };
+
i2c6: i2c@d4018800 {
compatible = "spacemit,k1-i2c";
reg = <0x0 0xd4018800 0x0 0x38>;

--
2.52.0