[mirror_ubuntu-jammy-kernel.git] / Documentation / devicetree / bindings / thermal / brcm,bcm2835-thermal.txt

Binding for Thermal Sensor driver for BCM2835 SoCs.

Required parameters:
-------------------

compatible: 		should be one of: "brcm,bcm2835-thermal",
			"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
reg:			Address range of the thermal registers.
clocks: 		Phandle of the clock used by the thermal sensor.
#thermal-sensor-cells:	should be 0 (see Documentation/devicetree/bindings/thermal/thermal-sensor.yaml)

Example:

thermal-zones {
	cpu_thermal: cpu-thermal {
		polling-delay-passive = <0>;
		polling-delay = <1000>;

		thermal-sensors = <&thermal>;

		trips {
			cpu-crit {
				temperature	= <80000>;
				hysteresis	= <0>;
				type		= "critical";
			};
		};

		coefficients = <(-538)	407000>;

		cooling-maps {
		};
	};
};

thermal: thermal@7e212000 {
	compatible = "brcm,bcm2835-thermal";
	reg = <0x7e212000 0x8>;
	clocks = <&clocks BCM2835_CLOCK_TSENS>;
	#thermal-sensor-cells = <0>;
};
Commit	Line	Data
1567e95a MS	1	Binding for Thermal Sensor driver for BCM2835 SoCs.
	2
	3	Required parameters:
	4	-------------------
	5
1e2ac982 SW	6	compatible: should be one of: "brcm,bcm2835-thermal",
	7	"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
	8	reg: Address range of the thermal registers.
	9	clocks: Phandle of the clock used by the thermal sensor.
cff1d293	10	#thermal-sensor-cells: should be 0 (see Documentation/devicetree/bindings/thermal/thermal-sensor.yaml)
1567e95a MS	11
	12	Example:
	13
1e2ac982 SW	14	thermal-zones {
	15	cpu_thermal: cpu-thermal {
	16	polling-delay-passive = <0>;
	17	polling-delay = <1000>;
	18
	19	thermal-sensors = <&thermal>;
	20
	21	trips {
	22	cpu-crit {
	23	temperature = <80000>;
	24	hysteresis = <0>;
	25	type = "critical";
	26	};
	27	};
	28
	29	coefficients = <(-538) 407000>;
	30
	31	cooling-maps {
	32	};
	33	};
	34	};
	35
1567e95a MS	36	thermal: thermal@7e212000 {
	37	compatible = "brcm,bcm2835-thermal";
	38	reg = <0x7e212000 0x8>;
	39	clocks = <&clocks BCM2835_CLOCK_TSENS>;
1e2ac982	40	#thermal-sensor-cells = <0>;
1567e95a	41	};