| # 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>; |
| }; |
| }; |
| }; |
| ... |
