xref: /freebsd-src/sys/contrib/device-tree/Bindings/thermal/mediatek,thermal.yaml (revision 8d13bc63c0e1d50bc9e47ac1f26329c999bfecf0)

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/thermal/mediatek,thermal.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Mediatek thermal controller for on-SoC temperatures

maintainers:
  - Sascha Hauer <s.hauer@pengutronix.de>

description:
  This device does not have its own ADC, instead it directly controls the AUXADC
  via AHB bus accesses. For this reason it needs phandles to the AUXADC. Also it
  controls a mux in the apmixedsys register space via AHB bus accesses, so a
  phandle to the APMIXEDSYS is also needed.

allOf:
  - $ref: thermal-sensor.yaml#

properties:
  compatible:
    enum:
      - mediatek,mt2701-thermal
      - mediatek,mt2712-thermal
      - mediatek,mt7622-thermal
      - mediatek,mt7981-thermal
      - mediatek,mt7986-thermal
      - mediatek,mt8173-thermal
      - mediatek,mt8183-thermal
      - mediatek,mt8365-thermal
      - mediatek,mt8516-thermal

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: Main clock needed for register access
      - description: The AUXADC clock

  clock-names:
    items:
      - const: therm
      - const: auxadc

  mediatek,auxadc:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: A phandle to the AUXADC which the thermal controller uses

  mediatek,apmixedsys:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: A phandle to the APMIXEDSYS controller

  resets:
    description: Reset controller controlling the thermal controller

  nvmem-cells:
    items:
      - description:
          NVMEM cell with EEPROMA phandle to the calibration data provided by an
          NVMEM device. If unspecified default values shall be used.

  nvmem-cell-names:
    items:
      - const: calibration-data

required:
  - reg
  - interrupts
  - clocks
  - clock-names
  - mediatek,auxadc
  - mediatek,apmixedsys

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/clock/mt8173-clk.h>
    #include <dt-bindings/reset/mt8173-resets.h>

    thermal@1100b000 {
        compatible = "mediatek,mt8173-thermal";
        reg = <0x1100b000 0x1000>;
        interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
        clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
        clock-names = "therm", "auxadc";
        resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
        mediatek,auxadc = <&auxadc>;
        mediatek,apmixedsys = <&apmixedsys>;
        nvmem-cells = <&thermal_calibration_data>;
        nvmem-cell-names = "calibration-data";
        #thermal-sensor-cells = <1>;
    };