Documentation/devicetree/bindings/dpll/dpll-device.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/dpll/dpll-device.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/dpll/dpll-device.yaml
Extension
.yaml
Size
1779 bytes
Lines
77
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.

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Annotated Snippet

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

title: Digital Phase-Locked Loop (DPLL) Device

maintainers:
  - Ivan Vecera <ivecera@redhat.com>

description:
  Digital Phase-Locked Loop (DPLL) device is used for precise clock
  synchronization in networking and telecom hardware. The device can
  have one or more channels (DPLLs) and one or more physical input and
  output pins. Each DPLL channel can either produce pulse-per-clock signal
  or drive ethernet equipment clock. The type of each channel can be
  indicated by dpll-types property.

properties:
  $nodename:
    pattern: "^dpll(@.*)?$"

  "#address-cells":
    const: 0

  "#size-cells":
    const: 0

  dpll-types:
    description: List of DPLL channel types, one per DPLL instance.
    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
    items:
      enum: [pps, eec]

  input-pins:
    type: object
    description: DPLL input pins
    unevaluatedProperties: false

    properties:
      "#address-cells":
        const: 1
      "#size-cells":
        const: 0

    patternProperties:
      "^pin@[0-9a-f]+$":
        $ref: /schemas/dpll/dpll-pin.yaml
        unevaluatedProperties: false

    required:
      - "#address-cells"
      - "#size-cells"

  output-pins:
    type: object
    description: DPLL output pins
    unevaluatedProperties: false

    properties:
      "#address-cells":
        const: 1
      "#size-cells":
        const: 0

    patternProperties:
      "^pin@[0-9]+$":
        $ref: /schemas/dpll/dpll-pin.yaml
        unevaluatedProperties: false

Annotation

Implementation Notes