Commit d3b2cfb4 authored by Naresh Solanki's avatar Naresh Solanki Committed by Guenter Roeck
Browse files

dt-bindings: hwmon: Add max6639 



Add Devicetree binding documentation for Maxim MAX6639 temperature
monitor with PWM fan-speed controller.

Signed-off-by: default avatarNaresh Solanki <naresh.solanki@9elements.com>
Reviewed-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240528125122.1129986-1-naresh.solanki@9elements.com


[groeck: Dropped unnecessary '|' after description:]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent be7d9294

Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml

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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

%YAML 1.2

---



$id: http://devicetree.org/schemas/hwmon/maxim,max6639.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Maxim max6639



maintainers:

  - Naresh Solanki <naresh.solanki@9elements.com>



description: |

  The MAX6639 is a 2-channel temperature monitor with dual, automatic, PWM

  fan-speed controller.  It monitors its own temperature and one external

  diode-connected transistor or the temperatures of two external diode-connected

  transistors, typically available in CPUs, FPGAs, or GPUs.



  Datasheets:

    https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf



properties:

  compatible:

    enum:

      - maxim,max6639



  reg:

    maxItems: 1



  '#address-cells':

    const: 1



  '#size-cells':

    const: 0



  '#pwm-cells':

    const: 3



required:

  - compatible

  - reg



patternProperties:

  "^fan@[0-1]$":

    type: object

    description:

      Represents the two fans and their specific configuration.



    $ref: fan-common.yaml#



    unevaluatedProperties: false



    properties:

      reg:

        description:

          The fan number.



    required:

      - reg



additionalProperties: false



examples:

  - |

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        fan1: fan-controller@10 {

            compatible = "maxim,max6639";

            reg = <0x10>;

            #address-cells = <1>;

            #size-cells = <0>;

            #pwm-cells = <3>;



            fan@0 {

                reg = <0x0>;

                pulses-per-revolution = <2>;

                max-rpm = <4000>;

                target-rpm = <1000>;

                pwms = <&fan1 0 25000 0>;

            };



            fan@1 {

                reg = <0x1>;

                pulses-per-revolution = <2>;

                max-rpm = <8000>;

                pwms = <&fan1 1 25000 0>;

            };

        };

    };

...