xref: /freebsd/sys/contrib/device-tree/Bindings/thermal/rcar-gen3-thermal.yaml (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229) 
1# SPDX-License-Identifier: GPL-2.0-only
2# Copyright (C) 2020 Renesas Electronics Corp.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/thermal/rcar-gen3-thermal.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Renesas R-Car Gen3 Thermal Sensor
9
10description:
11  On R-Car Gen3 SoCs, the thermal sensor controllers (TSC) control the thermal
12  sensors (THS) which are the analog circuits for measuring temperature (Tj)
13  inside the LSI.
14
15maintainers:
16  - Niklas Söderlund <niklas.soderlund@ragnatech.se>
17
18properties:
19  compatible:
20    enum:
21      - renesas,r8a774a1-thermal # RZ/G2M
22      - renesas,r8a774b1-thermal # RZ/G2N
23      - renesas,r8a7795-thermal  # R-Car H3
24      - renesas,r8a7796-thermal  # R-Car M3-W
25      - renesas,r8a77961-thermal # R-Car M3-W+
26      - renesas,r8a77965-thermal # R-Car M3-N
27      - renesas,r8a77980-thermal # R-Car V3H
28  reg:
29    minItems: 2
30    maxItems: 3
31    items:
32      - description: TSC1 registers
33      - description: TSC2 registers
34      - description: TSC3 registers
35
36  interrupts:
37    items:
38      - description: TEMP1 interrupt
39      - description: TEMP2 interrupt
40      - description: TEMP3 interrupt
41
42  clocks:
43    maxItems: 1
44
45  power-domains:
46    maxItems: 1
47
48  resets:
49    maxItems: 1
50
51  "#thermal-sensor-cells":
52    const: 1
53
54required:
55  - compatible
56  - reg
57  - interrupts
58  - clocks
59  - power-domains
60  - resets
61  - "#thermal-sensor-cells"
62
63additionalProperties: false
64
65examples:
66  - |
67    #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
68    #include <dt-bindings/interrupt-controller/arm-gic.h>
69    #include <dt-bindings/power/r8a7795-sysc.h>
70
71    tsc: thermal@e6198000 {
72            compatible = "renesas,r8a7795-thermal";
73            reg = <0xe6198000 0x100>,
74                  <0xe61a0000 0x100>,
75                  <0xe61a8000 0x100>;
76            interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
77                         <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
78                         <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
79            clocks = <&cpg CPG_MOD 522>;
80            power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
81            resets = <&cpg 522>;
82            #thermal-sensor-cells = <1>;
83    };
84
85    thermal-zones {
86            sensor_thermal: sensor-thermal {
87                    polling-delay-passive = <250>;
88                    polling-delay = <1000>;
89                    thermal-sensors = <&tsc 0>;
90
91                    trips {
92                            sensor1_crit: sensor1-crit {
93                                    temperature = <90000>;
94                                    hysteresis = <2000>;
95                                    type = "critical";
96                            };
97                    };
98            };
99    };
100