xref: /linux/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.yaml (revision 7255fcc80d4b525cc10cfaaf7f485830d4ed2000) 
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 most R-Car Gen3 and later SoCs, the thermal sensor controllers (TSC)
12  control the thermal sensors (THS) which are the analog circuits for
13  measuring temperature (Tj) 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      - renesas,r8a779a0-thermal # R-Car V3U
30      - renesas,r8a779f0-thermal # R-Car S4-8
31      - renesas,r8a779g0-thermal # R-Car V4H
32      - renesas,r8a779h0-thermal # R-Car V4M
33
34  reg: true
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  - clocks
58  - power-domains
59  - resets
60  - "#thermal-sensor-cells"
61
62if:
63  properties:
64    compatible:
65      contains:
66        enum:
67          - renesas,r8a779a0-thermal
68then:
69  properties:
70    reg:
71      items:
72        - description: TSC0 registers
73        - description: TSC1 registers
74        - description: TSC2 registers
75        - description: TSC3 registers
76        - description: TSC4 registers
77else:
78  properties:
79    reg:
80      minItems: 2
81      items:
82        - description: TSC1 registers
83        - description: TSC2 registers
84        - description: TSC3 registers
85        - description: TSC4 registers
86  if:
87    not:
88      properties:
89        compatible:
90          contains:
91            enum:
92              - renesas,r8a779f0-thermal
93              - renesas,r8a779g0-thermal
94              - renesas,r8a779h0-thermal
95  then:
96    required:
97      - interrupts
98
99additionalProperties: false
100
101examples:
102  - |
103    #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
104    #include <dt-bindings/interrupt-controller/arm-gic.h>
105    #include <dt-bindings/power/r8a7795-sysc.h>
106
107    tsc: thermal@e6198000 {
108            compatible = "renesas,r8a7795-thermal";
109            reg = <0xe6198000 0x100>,
110                  <0xe61a0000 0x100>,
111                  <0xe61a8000 0x100>;
112            interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
113                         <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
114                         <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
115            clocks = <&cpg CPG_MOD 522>;
116            power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
117            resets = <&cpg 522>;
118            #thermal-sensor-cells = <1>;
119    };
120
121    thermal-zones {
122            sensor_thermal: sensor-thermal {
123                    polling-delay-passive = <250>;
124                    polling-delay = <1000>;
125                    thermal-sensors = <&tsc 0>;
126
127                    trips {
128                            sensor1_crit: sensor1-crit {
129                                    temperature = <90000>;
130                                    hysteresis = <2000>;
131                                    type = "critical";
132                            };
133                    };
134            };
135    };
136  - |
137    #include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
138    #include <dt-bindings/interrupt-controller/arm-gic.h>
139    #include <dt-bindings/power/r8a779a0-sysc.h>
140
141    tsc_r8a779a0: thermal@e6190000 {
142            compatible = "renesas,r8a779a0-thermal";
143            reg = <0xe6190000 0x200>,
144                  <0xe6198000 0x200>,
145                  <0xe61a0000 0x200>,
146                  <0xe61a8000 0x200>,
147                  <0xe61b0000 0x200>;
148            clocks = <&cpg CPG_MOD 919>;
149            power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
150            resets = <&cpg 919>;
151            #thermal-sensor-cells = <1>;
152    };
153