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