1* UniPhier Thermal bindings
2
3This describes the devicetree bindings for thermal monitor supported by
4PVT(Process, Voltage and Temperature) monitoring unit implemented on Socionext
5UniPhier SoCs.
6
7Required properties:
8- compatible :
9  - "socionext,uniphier-pxs2-thermal" : For UniPhier PXs2 SoC
10  - "socionext,uniphier-ld20-thermal" : For UniPhier LD20 SoC
11  - "socionext,uniphier-pxs3-thermal" : For UniPhier PXs3 SoC
12- interrupts : IRQ for the temperature alarm
13- #thermal-sensor-cells : Should be 0. See ./thermal.txt for details.
14
15Optional properties:
16- socionext,tmod-calibration: A pair of calibrated values referred from PVT,
17                              in case that the values aren't set on SoC,
18                              like a reference board.
19
20Example:
21
22	sysctrl@61840000 {
23		compatible = "socionext,uniphier-ld20-sysctrl",
24			     "simple-mfd", "syscon";
25		reg = <0x61840000 0x10000>;
26		...
27		pvtctl: pvtctl {
28			compatible = "socionext,uniphier-ld20-thermal";
29			interrupts = <0 3 1>;
30			#thermal-sensor-cells = <0>;
31		};
32		...
33	};
34
35	thermal-zones {
36		cpu_thermal {
37			polling-delay-passive = <250>;	/* 250ms */
38			polling-delay = <1000>;		/* 1000ms */
39			thermal-sensors = <&pvtctl>;
40
41			trips {
42				cpu_crit: cpu_crit {
43					temperature = <110000>;	/* 110C */
44					hysteresis = <2000>;
45					type = "critical";
46				};
47				cpu_alert: cpu_alert {
48					temperature = <100000>;	/* 100C */
49					hysteresis = <2000>;
50					type = "passive";
51				};
52			};
53
54			cooling-maps {
55				map0 {
56					trip = <&cpu_alert>;
57					cooling-device = <&cpu0 (-1) (-1)>;
58				};
59				map1 {
60					trip = <&cpu_alert>;
61					cooling-device = <&cpu2 (-1) (-1)>;
62				};
63			};
64		};
65	};
66