Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml
Extension
.yaml
Size
3394 bytes
Lines
128
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)
# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
%YAML 1.2
---
$id: http://devicetree.org/schemas/watchdog/atmel,at91sam9-wdt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Atmel Watchdog Timers

maintainers:
  - Eugen Hristev <eugen.hristev@microchip.com>

properties:
  compatible:
    const: atmel,at91sam9260-wdt

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  interrupts:
    maxItems: 1

  atmel,max-heartbeat-sec:
    description:
      Should contain the maximum heartbeat value in seconds. This value
      should be less or equal to 16. It is used to compute the WDV field.
    maximum: 16

  atmel,min-heartbeat-sec:
    description:
      Should contain the minimum heartbeat value in seconds. This value
      must be smaller than the max-heartbeat-sec value. It is used to
      compute the WDD field.
    maximum: 16

  atmel,watchdog-type:
    $ref: /schemas/types.yaml#/definitions/string
    description: |
      Should be hardware or software.
    oneOf:
      - description:
          Hardware watchdog uses the at91 watchdog reset.
        const: hardware
      - description: |
          Software watchdog uses the watchdog interrupt
          to trigger a software reset.
        const: software
    default: hardware

  atmel,reset-type:
    $ref: /schemas/types.yaml#/definitions/string
    description: |
      Should be proc or all. This is valid only when using hardware watchdog.
    oneOf:
      - description:
          Assert peripherals and processor reset signals.
        const: all
      - description:
          Assert the processor reset signal.
        const: proc
    default: all

  atmel,disable:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Should be present if you want to stop the watchdog.

Annotation

Implementation Notes