| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/hwmon/maxim,max31790.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: The Maxim MAX31790 Fan Controller |
| |
| maintainers: |
| - Guenter Roeck <linux@roeck-us.net> |
| - Chanh Nguyen <chanh@os.amperecomputing.com> |
| |
| description: > |
| The MAX31790 controls the speeds of up to six fans using six |
| independent PWM outputs. The desired fan speeds (or PWM duty cycles) |
| are written through the I2C interface. |
| |
| Datasheets: |
| https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf |
| |
| properties: |
| compatible: |
| const: maxim,max31790 |
| |
| reg: |
| maxItems: 1 |
| |
| clocks: |
| maxItems: 1 |
| |
| resets: |
| maxItems: 1 |
| |
| "#pwm-cells": |
| const: 1 |
| |
| patternProperties: |
| "^fan-[0-9]+$": |
| $ref: fan-common.yaml# |
| unevaluatedProperties: false |
| |
| required: |
| - compatible |
| - reg |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| pwm_provider: fan-controller@20 { |
| compatible = "maxim,max31790"; |
| reg = <0x20>; |
| clocks = <&sys_clk>; |
| resets = <&reset 0>; |
| #pwm-cells = <1>; |
| |
| fan-0 { |
| pwms = <&pwm_provider 1>; |
| }; |
| |
| fan-1 { |
| pwms = <&pwm_provider 2>; |
| }; |
| }; |
| }; |
| |
