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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

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%YAML 1.2

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---

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

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

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title: Maxim max6639

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maintainers:

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

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description: |

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

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

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

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

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  Datasheets:

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

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properties:

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  compatible:

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    enum:

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      - maxim,max6639

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  reg:

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    maxItems: 1

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  '#address-cells':

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    const: 1

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  '#size-cells':

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    const: 0

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  '#pwm-cells':

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    const: 3

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required:

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  - compatible

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  - reg

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patternProperties:

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

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    type: object

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    description:

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      Represents the two fans and their specific configuration.

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    $ref: fan-common.yaml#

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    unevaluatedProperties: false

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    properties:

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      reg:

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        description:

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          The fan number.

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    required:

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      - reg

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additionalProperties: false

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examples:

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  - |

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    i2c {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        fan1: fan-controller@10 {

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            compatible = "maxim,max6639";

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            reg = <0x10>;

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            #address-cells = <1>;

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            #size-cells = <0>;

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            #pwm-cells = <3>;

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            fan@0 {

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                reg = <0x0>;

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                pulses-per-revolution = <2>;

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                max-rpm = <4000>;

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                target-rpm = <1000>;

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                pwms = <&fan1 0 25000 0>;

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            };

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            fan@1 {

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                reg = <0x1>;

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                pulses-per-revolution = <2>;

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                max-rpm = <8000>;

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                pwms = <&fan1 1 25000 0>;

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            };

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        };

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    };

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...

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