Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
Extension
.yaml
Size
2778 bytes
Lines
120
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/hwmon/microchip,emc2305.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Microchip EMC2305 SMBus compliant PWM fan controller

maintainers:
  - Michael Shych <michaelsh@nvidia.com>

description:
  Microchip EMC2301/2/3/5 pwm controller which supports up to five programmable
  fan control circuits.

properties:
  compatible:
    oneOf:
      - enum:
          - microchip,emc2305
      - items:
          - enum:
              - microchip,emc2303
              - microchip,emc2302
              - microchip,emc2301
          - const: microchip,emc2305

  reg:
    maxItems: 1

  '#address-cells':
    const: 1

  '#size-cells':
    const: 0

  '#pwm-cells':
    const: 3
    description: |
      Number of cells in a PWM specifier.
      - cell 0: The PWM frequency
      - cell 1: The PWM polarity: 0 or PWM_POLARITY_INVERTED
      - cell 2: The PWM output config:
           - 0 (Open-Drain)
           - 1 (Push-Pull)

patternProperties:
  '^fan@[0-4]$':
    $ref: fan-common.yaml#
    unevaluatedProperties: false
    properties:
      reg:
        description:
          The fan number used to determine the associated PWM channel.
        maxItems: 1

      fan-shutdown-percent:
        description:
          PWM duty cycle in percent applied to the fan during shutdown.
        minimum: 0
        maximum: 100

    required:
      - reg

required:
  - compatible
  - reg

additionalProperties: false

Annotation

Implementation Notes