xref: /freebsd/sys/contrib/device-tree/Bindings/thermal/rcar-gen3-thermal.yaml (revision 3ff01b231dfa83d518854c63e7c9cd1debd1139e) 
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,r8a774e1-thermal # RZ/G2H
24      - renesas,r8a7795-thermal  # R-Car H3
25      - renesas,r8a7796-thermal  # R-Car M3-W
26      - renesas,r8a77961-thermal # R-Car M3-W+
27      - renesas,r8a77965-thermal # R-Car M3-N
28      - renesas,r8a77980-thermal # R-Car V3H
29  reg:
30    minItems: 2
31    maxItems: 3
32    items:
33      - description: TSC1 registers
34      - description: TSC2 registers
35      - description: TSC3 registers
36
37  interrupts:
38    items:
39      - description: TEMP1 interrupt
40      - description: TEMP2 interrupt
41      - description: TEMP3 interrupt
42
43  clocks:
44    maxItems: 1
45
46  power-domains:
47    maxItems: 1
48
49  resets:
50    maxItems: 1
51
52  "#thermal-sensor-cells":
53    const: 1
54
55required:
56  - compatible
57  - reg
58  - interrupts
59  - clocks
60  - power-domains
61  - resets
62  - "#thermal-sensor-cells"
63
64additionalProperties: false
65
66examples:
67  - |
68    #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
69    #include <dt-bindings/interrupt-controller/arm-gic.h>
70    #include <dt-bindings/power/r8a7795-sysc.h>
71
72    tsc: thermal@e6198000 {
73            compatible = "renesas,r8a7795-thermal";
74            reg = <0xe6198000 0x100>,
75                  <0xe61a0000 0x100>,
76                  <0xe61a8000 0x100>;
77            interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
78                         <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
79                         <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
80            clocks = <&cpg CPG_MOD 522>;
81            power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
82            resets = <&cpg 522>;
83            #thermal-sensor-cells = <1>;
84    };
85
86    thermal-zones {
87            sensor_thermal: sensor-thermal {
88                    polling-delay-passive = <250>;
89                    polling-delay = <1000>;
90                    thermal-sensors = <&tsc 0>;
91
92                    trips {
93                            sensor1_crit: sensor1-crit {
94                                    temperature = <90000>;
95                                    hysteresis = <2000>;
96                                    type = "critical";
97                            };
98                    };
99            };
100    };
101