xref: /linux/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/thermal/mediatek,thermal.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Mediatek thermal controller for on-SoC temperatures
8
9maintainers:
10  - Sascha Hauer <s.hauer@pengutronix.de>
11
12description:
13  This device does not have its own ADC, instead it directly controls the AUXADC
14  via AHB bus accesses. For this reason it needs phandles to the AUXADC. Also it
15  controls a mux in the apmixedsys register space via AHB bus accesses, so a
16  phandle to the APMIXEDSYS is also needed.
17
18allOf:
19  - $ref: thermal-sensor.yaml#
20
21properties:
22  compatible:
23    enum:
24      - mediatek,mt2701-thermal
25      - mediatek,mt2712-thermal
26      - mediatek,mt7622-thermal
27      - mediatek,mt7981-thermal
28      - mediatek,mt7986-thermal
29      - mediatek,mt8173-thermal
30      - mediatek,mt8183-thermal
31      - mediatek,mt8365-thermal
32      - mediatek,mt8516-thermal
33
34  reg:
35    maxItems: 1
36
37  interrupts:
38    maxItems: 1
39
40  clocks:
41    items:
42      - description: Main clock needed for register access
43      - description: The AUXADC clock
44
45  clock-names:
46    items:
47      - const: therm
48      - const: auxadc
49
50  mediatek,auxadc:
51    $ref: /schemas/types.yaml#/definitions/phandle
52    description: A phandle to the AUXADC which the thermal controller uses
53
54  mediatek,apmixedsys:
55    $ref: /schemas/types.yaml#/definitions/phandle
56    description: A phandle to the APMIXEDSYS controller
57
58  resets:
59    description: Reset controller controlling the thermal controller
60
61  nvmem-cells:
62    items:
63      - description:
64          NVMEM cell with EEPROMA phandle to the calibration data provided by an
65          NVMEM device. If unspecified default values shall be used.
66
67  nvmem-cell-names:
68    items:
69      - const: calibration-data
70
71required:
72  - reg
73  - interrupts
74  - clocks
75  - clock-names
76  - mediatek,auxadc
77  - mediatek,apmixedsys
78
79unevaluatedProperties: false
80
81examples:
82  - |
83    #include <dt-bindings/interrupt-controller/irq.h>
84    #include <dt-bindings/clock/mt8173-clk.h>
85    #include <dt-bindings/reset/mt8173-resets.h>
86
87    thermal@1100b000 {
88        compatible = "mediatek,mt8173-thermal";
89        reg = <0x1100b000 0x1000>;
90        interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
91        clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
92        clock-names = "therm", "auxadc";
93        resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
94        mediatek,auxadc = <&auxadc>;
95        mediatek,apmixedsys = <&apmixedsys>;
96        nvmem-cells = <&thermal_calibration_data>;
97        nvmem-cell-names = "calibration-data";
98        #thermal-sensor-cells = <1>;
99    };
100