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Commit e536f730 authored by Wolfram Sang's avatar Wolfram Sang Committed by Wim Van Sebroeck
Browse files

watchdog: add documentation for PM usage 



Add the first rule we recently agreed on.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent d2b911db

Documentation/watchdog/watchdog-pm.txt

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The Linux WatchDog Timer Power Management Guide

===============================================

Last reviewed: 17-Dec-2018



Wolfram Sang <wsa+renesas@sang-engineering.com>



Introduction

------------

This document states rules about watchdog devices and their power management

handling to ensure a uniform behaviour for Linux systems.





Ping on resume

--------------

On resume, a watchdog timer shall be reset to its selected value to give

userspace enough time to resume. [1] [2]



[1] https://patchwork.kernel.org/patch/10252209/

[2] https://patchwork.kernel.org/patch/10711625/