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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/timer/arm,twd-timer.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM Timer-Watchdog Timer
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-timer
- arm,cortex-a5-twd-timer
- arm,arm11mp-twd-timer
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 1
always-on:
description:
If present, the timer is powered through an always-on power domain,
therefore it never loses context.
required:
- compatible
- reg
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
timer@2c000600 {
compatible = "arm,arm11mp-twd-timer";
reg = <0x2c000600 0x20>;
interrupts = <GIC_PPI 13 0xf01>;
};
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