GNU Linux-libre 4.14.266-gnu1
[releases.git] / Documentation / devicetree / bindings / thermal / rcar-thermal.txt
1 * Renesas R-Car Thermal
2
3 Required properties:
4 - compatible            : "renesas,thermal-<soctype>",
5                            "renesas,rcar-gen2-thermal" (with thermal-zone) or
6                            "renesas,rcar-thermal" (without thermal-zone) as fallback.
7                           Examples with soctypes are:
8                             - "renesas,thermal-r8a73a4" (R-Mobile APE6)
9                             - "renesas,thermal-r8a7779" (R-Car H1)
10                             - "renesas,thermal-r8a7790" (R-Car H2)
11                             - "renesas,thermal-r8a7791" (R-Car M2-W)
12                             - "renesas,thermal-r8a7792" (R-Car V2H)
13                             - "renesas,thermal-r8a7793" (R-Car M2-N)
14 - reg                   : Address range of the thermal registers.
15                           The 1st reg will be recognized as common register
16                           if it has "interrupts".
17
18 Option properties:
19
20 - interrupts            : use interrupt
21
22 Example (non interrupt support):
23
24 thermal@ffc48000 {
25         compatible = "renesas,thermal-r8a7779", "renesas,rcar-thermal";
26         reg = <0xffc48000 0x38>;
27 };
28
29 Example (interrupt support):
30
31 thermal@e61f0000 {
32         compatible = "renesas,thermal-r8a73a4", "renesas,rcar-thermal";
33         reg = <0xe61f0000 0x14
34                 0xe61f0100 0x38
35                 0xe61f0200 0x38
36                 0xe61f0300 0x38>;
37         interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
38 };
39
40 Example (with thermal-zone):
41
42 thermal-zones {
43         cpu_thermal: cpu-thermal {
44                 polling-delay-passive   = <1000>;
45                 polling-delay           = <5000>;
46
47                 thermal-sensors = <&thermal>;
48
49                 trips {
50                         cpu-crit {
51                                 temperature     = <115000>;
52                                 hysteresis      = <0>;
53                                 type            = "critical";
54                         };
55                 };
56                 cooling-maps {
57                 };
58         };
59 };
60
61 thermal: thermal@e61f0000 {
62         compatible =    "renesas,thermal-r8a7790",
63                         "renesas,rcar-gen2-thermal",
64                         "renesas,rcar-thermal";
65         reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
66         interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
67         clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
68         power-domains = <&cpg_clocks>;
69         #thermal-sensor-cells = <0>;
70 };