Commit 5b606ae8 authored by Rob Herring's avatar Rob Herring Committed by Wim Van Sebroeck
Browse files

dt-bindings: watchdog: Convert arm,sbsa-gwdt to DT schema



Convert the arm,sbsa-gwdt binding to DT schema format.

Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Fu Wei <fu.wei@linaro.org>
Cc: linux-watchdog@vger.kernel.org
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210607194022.3095736-1-robh@kernel.org

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent 12dbbf08
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/watchdog/arm,sbsa-gwdt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: SBSA (Server Base System Architecture) Generic Watchdog
maintainers:
- Fu Wei <fu.wei@linaro.org>
description: |
The SBSA Generic Watchdog Timer is used to force a reset of the system after
two stages of timeout have elapsed. A detailed definition of the watchdog
timer can be found in the ARM document: ARM-DEN-0029 - Server Base System
Architecture (SBSA)
allOf:
- $ref: watchdog.yaml#
properties:
compatible:
const: arm,sbsa-gwdt
reg:
items:
- description: Watchdog control frame
- description: Refresh frame
interrupts:
description: The Watchdog Signal 0 (WS0) SPI (Shared Peripheral Interrupt)
maxItems: 1
required:
- compatible
- reg
- interrupts
unevaluatedProperties: false
examples:
- |
watchdog@2a440000 {
compatible = "arm,sbsa-gwdt";
reg = <0x2a440000 0x1000>,
<0x2a450000 0x1000>;
interrupts = <0 27 4>;
timeout-sec = <30>;
};
...
* SBSA (Server Base System Architecture) Generic Watchdog
The SBSA Generic Watchdog Timer is used to force a reset of the system
after two stages of timeout have elapsed. A detailed definition of the
watchdog timer can be found in the ARM document: ARM-DEN-0029 - Server
Base System Architecture (SBSA)
Required properties:
- compatible: Should at least contain "arm,sbsa-gwdt".
- reg: Each entry specifies the base physical address of a register frame
and the length of that frame; currently, two frames must be defined,
in this order:
1: Watchdog control frame;
2: Refresh frame.
- interrupts: Should contain the Watchdog Signal 0 (WS0) SPI (Shared
Peripheral Interrupt) number of SBSA Generic Watchdog.
Optional properties
- timeout-sec: Watchdog timeout values (in seconds).
Example for FVP Foundation Model v8:
watchdog@2a440000 {
compatible = "arm,sbsa-gwdt";
reg = <0x0 0x2a440000 0 0x1000>,
<0x0 0x2a450000 0 0x1000>;
interrupts = <0 27 4>;
timeout-sec = <30>;
};
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