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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/watchdog/starfive,jh7100-wdt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: StarFive Watchdog for JH7100 and JH7110 SoC
maintainers:
- Xingyu Wu <xingyu.wu@starfivetech.com>
- Samin Guo <samin.guo@starfivetech.com>
description:
The JH7100 and JH7110 watchdog both are 32 bit counters. JH7100 watchdog
has only one timeout phase and reboots. And JH7110 watchdog has two
timeout phases. At the first phase, the signal of watchdog interrupt
output(WDOGINT) will rise when counter is 0. The counter will reload
the timeout value. And then, if counter decreases to 0 again and WDOGINT
isn't cleared, the watchdog will reset the system unless the watchdog
reset is disabled.
properties:
compatible:
oneOf:
- enum:
- starfive,jh7100-wdt
- starfive,jh7110-wdt
- items:
- enum:
- starfive,jh8100-wdt
- const: starfive,jh7110-wdt
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: APB clock
- description: Core clock
clock-names:
items:
- const: apb
- const: core
resets:
minItems: 1
maxItems: 2
required:
- compatible
- reg
- clocks
- clock-names
- resets
allOf:
- $ref: watchdog.yaml#
- if:
properties:
compatible:
contains:
enum:
- starfive,jh8100-wdt
then:
properties:
resets:
items:
- description: Core reset
else:
properties:
resets:
items:
- description: APB reset
- description: Core reset
unevaluatedProperties: false
examples:
- |
watchdog@12480000 {
compatible = "starfive,jh7100-wdt";
reg = <0x12480000 0x10000>;
clocks = <&clk 171>,
<&clk 172>;
clock-names = "apb", "core";
resets = <&rst 99>,
<&rst 100>;
};
|
