Commit 510cd9e6 authored by Alexey Charkov's avatar Alexey Charkov Committed by Heiko Stuebner
Browse files

arm64: dts: rockchip: add thermal zones information on RK3588 



This includes the necessary device tree data to allow thermal
monitoring on RK3588(s) using the on-chip TSADC device, along with
trip points for automatic thermal management.

Each of the CPU clusters (one for the little cores and two for
the big cores) get a passive cooling trip point at 85C, which
will trigger DVFS throttling of the respective cluster upon
reaching a high temperature condition.

All zones also have a critical trip point at 115C, which will
trigger a reset.

Signed-off-by: default avatarAlexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-1-c1f5f3267f1e@gmail.com


Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
parent def88eb4

arch/arm64/boot/dts/rockchip/rk3588-base.dtsi

+153 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <dt-bindings/reset/rockchip,rk3588-cru.h>

#include <dt-bindings/phy/phy.h>

#include <dt-bindings/ata/ahci.h>

#include <dt-bindings/thermal/thermal.h>



/ {

	compatible = "rockchip,rk3588";
@@ -2368,6 +2369,158 @@ pwm15: pwm@febf0030 { 
		status = "disabled";

	};



	thermal_zones: thermal-zones {

		/* sensor near the center of the SoC */

		package_thermal: package-thermal {

			polling-delay-passive = <0>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 0>;



			trips {

				package_crit: package-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};

		};



		/* sensor between A76 cores 0 and 1 */

		bigcore0_thermal: bigcore0-thermal {

			polling-delay-passive = <100>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 1>;



			trips {

				bigcore0_alert: bigcore0-alert {

					temperature = <85000>;

					hysteresis = <2000>;

					type = "passive";

				};



				bigcore0_crit: bigcore0-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};



			cooling-maps {

				map0 {

					trip = <&bigcore0_alert>;

					cooling-device =

						<&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

						<&cpu_b1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

				};

			};

		};



		/* sensor between A76 cores 2 and 3 */

		bigcore2_thermal: bigcore2-thermal {

			polling-delay-passive = <100>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 2>;



			trips {

				bigcore2_alert: bigcore2-alert {

					temperature = <85000>;

					hysteresis = <2000>;

					type = "passive";

				};



				bigcore2_crit: bigcore2-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};



			cooling-maps {

				map0 {

					trip = <&bigcore2_alert>;

					cooling-device =

						<&cpu_b2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

						<&cpu_b3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

				};

			};

		};



		/* sensor between the four A55 cores */

		little_core_thermal: littlecore-thermal {

			polling-delay-passive = <100>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 3>;



			trips {

				littlecore_alert: littlecore-alert {

					temperature = <85000>;

					hysteresis = <2000>;

					type = "passive";

				};



				littlecore_crit: littlecore-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};



			cooling-maps {

				map0 {

					trip = <&littlecore_alert>;

					cooling-device =

						<&cpu_l0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

						<&cpu_l1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

						<&cpu_l2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

						<&cpu_l3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

				};

			};

		};



		/* sensor near the PD_CENTER power domain */

		center_thermal: center-thermal {

			polling-delay-passive = <0>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 4>;



			trips {

				center_crit: center-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};

		};



		gpu_thermal: gpu-thermal {

			polling-delay-passive = <0>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 5>;



			trips {

				gpu_crit: gpu-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};

		};



		npu_thermal: npu-thermal {

			polling-delay-passive = <0>;

			polling-delay = <0>;

			thermal-sensors = <&tsadc 6>;



			trips {

				npu_crit: npu-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};

		};

	};



	tsadc: tsadc@fec00000 {

		compatible = "rockchip,rk3588-tsadc";

		reg = <0x0 0xfec00000 0x0 0x400>;