71 lines
1.7 KiB
YAML
71 lines
1.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
|
|
$id: http://devicetree.org/schemas/hwmon/maxim,max6650.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Maxim MAX6650 and MAX6651 I2C Fan Controllers
|
|
|
|
maintainers:
|
|
- Javier Carrasco <javier.carrasco.cruz@gmail.com>
|
|
|
|
description: |
|
|
The MAX6650 and MAX6651 regulate and monitor the speed
|
|
of 5VDC/12VDC burshless fans with built-in tachometers.
|
|
|
|
Datasheets:
|
|
https://datasheets.maximintegrated.com/en/ds/MAX6650-MAX6651.pdf
|
|
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- maxim,max6650
|
|
- maxim,max6651
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
maxim,fan-microvolt:
|
|
description:
|
|
The supply voltage of the fan, either 5000000 uV or
|
|
12000000 uV.
|
|
enum: [5000000, 12000000]
|
|
|
|
maxim,fan-prescale:
|
|
description:
|
|
Pre-scaling value, as per datasheet. Lower values
|
|
allow more fine-grained control of slower fans.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
enum: [1, 2, 4, 8, 16]
|
|
|
|
maxim,fan-target-rpm:
|
|
description:
|
|
Initial requested fan rotation speed. If specified, the
|
|
driver selects closed-loop mode and the requested speed.
|
|
This ensures the fan is already running before userspace
|
|
takes over.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
maximum: 30000
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
i2c {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
fan-controller@1b {
|
|
compatible = "maxim,max6650";
|
|
reg = <0x1b>;
|
|
maxim,fan-microvolt = <12000000>;
|
|
maxim,fan-prescale = <4>;
|
|
maxim,fan-target-rpm = <1200>;
|
|
};
|
|
};
|