Documentation/devicetree/bindings/watchdog/samsung-wdt.yaml

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

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/watchdog/samsung-wdt.yaml
Extension: .yaml
Size: 4276 bytes
Lines: 165
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.

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

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/watchdog/samsung-wdt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Samsung SoC Watchdog Timer Controller

maintainers:
  - Krzysztof Kozlowski <krzk@kernel.org>

description: |+
  The Samsung's Watchdog controller is used for resuming system operation
  after a preset amount of time during which the WDT reset event has not
  occurred.

properties:
  compatible:
    oneOf:
      - enum:
          - google,gs101-wdt                      # for Google gs101
          - samsung,s3c6410-wdt                   # for S3C6410, S5PV210 and Exynos4
          - samsung,exynos5250-wdt                # for Exynos5250
          - samsung,exynos5420-wdt                # for Exynos5420
          - samsung,exynos7-wdt                   # for Exynos7
          - samsung,exynos850-wdt                 # for Exynos850
          - samsung,exynos990-wdt                 # for Exynos990
          - samsung,exynosautov9-wdt              # for Exynosautov9
          - samsung,exynosautov920-wdt            # for Exynosautov920
      - items:
          - enum:
              - tesla,fsd-wdt
          - const: samsung,exynos7-wdt

  reg:
    maxItems: 1

  clocks:
    minItems: 1
    maxItems: 2

  clock-names:
    minItems: 1
    maxItems: 2

  interrupts:
    maxItems: 1

  samsung,cluster-index:
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1, 2]
    description:
      Index of CPU cluster on which watchdog is running (in case of Exynos850,
      Exynos990 or Google gs101).

  samsung,syscon-phandle:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Phandle to the PMU system controller node (in case of Exynos5250,
      Exynos5420, Exynos7, Exynos850, Exynos990 and gs101).

required:
  - compatible
  - clocks
  - clock-names
  - interrupts
  - reg

allOf:
  - $ref: watchdog.yaml#

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.