xref: /freebsd/sys/contrib/device-tree/Bindings/thermal/brcm,bcm2835-thermal.txt (revision e7437ae907c89bf85a99c5cbb7ddd194a1ff1354)
1Binding for Thermal Sensor driver for BCM2835 SoCs.
2
3Required parameters:
4-------------------
5
6compatible: 		should be one of: "brcm,bcm2835-thermal",
7			"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
8reg:			Address range of the thermal registers.
9clocks: 		Phandle of the clock used by the thermal sensor.
10#thermal-sensor-cells:	should be 0 (see Documentation/devicetree/bindings/thermal/thermal-sensor.yaml)
11
12Example:
13
14thermal-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
36thermal: thermal@7e212000 {
37	compatible = "brcm,bcm2835-thermal";
38	reg = <0x7e212000 0x8>;
39	clocks = <&clocks BCM2835_CLOCK_TSENS>;
40	#thermal-sensor-cells = <0>;
41};
42