linux/Documentation/devicetree/bindings/watchdog/arm,twd-wdt.yaml

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

title: ARM Timer-Watchdog Watchdog

maintainers:
  - Rob Herring <robh@kernel.org>

description:
  ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core
  Timer-Watchdog (aka TWD), which provides both a per-cpu local timer
  and watchdog.

  The TWD is usually attached to a GIC to deliver its two per-processor
  interrupts.

properties:
  compatible:
    enum:
      - arm,cortex-a9-twd-wdt
      - arm,cortex-a5-twd-wdt
      - arm,arm11mp-twd-wdt

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

required:
  - compatible
  - reg

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    watchdog@2c000620 {
        compatible = "arm,arm11mp-twd-wdt";
        reg = <0x2c000620 0x20>;
        interrupts = <GIC_PPI 14 0xf01>;
    };