1* ZTE zx2967 family Thermal
2
3Required Properties:
4- compatible: should be one of the following.
5    * zte,zx296718-thermal
6- reg: physical base address of the controller and length of memory mapped
7    region.
8- clocks : Pairs of phandle and specifier referencing the controller's clocks.
9- clock-names: "topcrm" for the topcrm clock.
10	       "apb" for the apb clock.
11- #thermal-sensor-cells: must be 0.
12
13Please note: slope coefficient defined in thermal-zones section need to be
14multiplied by 1000.
15
16Example for tempsensor:
17
18	tempsensor: tempsensor@148a000 {
19		compatible = "zte,zx296718-thermal";
20		reg = <0x0148a000 0x20>;
21		clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>;
22		clock-names = "topcrm", "apb";
23		#thermal-sensor-cells = <0>;
24	};
25
26Example for cooling device:
27
28	cooling_dev: cooling_dev {
29		cluster0_cooling_dev: cluster0-cooling-dev {
30			#cooling-cells = <2>;
31			cpumask = <0xf>;
32			capacitance = <1500>;
33		};
34
35	cluster1_cooling_dev: cluster1-cooling-dev {
36			#cooling-cells = <2>;
37			cpumask = <0x30>;
38			capacitance = <2000>;
39		};
40	};
41
42Example for thermal zones:
43
44	thermal-zones {
45		zx296718_thermal: zx296718_thermal {
46			polling-delay-passive = <500>;
47			polling-delay = <1000>;
48			sustainable-power = <6500>;
49
50			thermal-sensors = <&tempsensor 0>;
51			/*
52			 * slope need to be multiplied by 1000.
53			 */
54			coefficients = <1951 (-922)>;
55
56			trips {
57				trip0: switch_on_temperature {
58					temperature = <90000>;
59					hysteresis = <2000>;
60					type = "passive";
61				};
62
63				trip1: desired_temperature {
64					temperature = <100000>;
65					hysteresis = <2000>;
66					type = "passive";
67				};
68
69				crit: critical_temperature {
70					temperature = <110000>;
71					hysteresis = <2000>;
72					type = "critical";
73				};
74			};
75
76			cooling-maps {
77				map0 {
78					trip = <&trip0>;
79					cooling-device = <&gpu 2 5>;
80				};
81
82				map1 {
83					trip = <&trip0>;
84					cooling-device = <&cluster0_cooling_dev 1 2>;
85				};
86
87				map2 {
88					trip = <&trip1>;
89					cooling-device = <&cluster0_cooling_dev 1 2>;
90				};
91
92				map3 {
93					trip = <&crit>;
94					cooling-device = <&cluster0_cooling_dev 1 2>;
95				};
96
97				map4 {
98					trip = <&trip0>;
99					cooling-device = <&cluster1_cooling_dev 1 2>;
100					contribution = <9000>;
101				};
102
103				map5 {
104					trip = <&trip1>;
105					cooling-device = <&cluster1_cooling_dev 1 2>;
106					contribution = <4096>;
107				};
108
109				map6 {
110					trip = <&crit>;
111					cooling-device = <&cluster1_cooling_dev 1 2>;
112					contribution = <4096>;
113				};
114			};
115		};
116	};
117