From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Fainelli <f.fainelli@gmail.com>
Subject: Re: GPIO triggers kernel reboot
Date: Sat, 25 Jan 2014 18:54:40 -0800
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Cc: Wolfgang Denk <wd@denx.de>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>

Le 25/01/2014 08:02, Heiko Schocher a =E9crit :
> Hello all,
>
> is it possible to reboot current mainline kernel triggered from a
> GPIO in kernel space?
>
> If not, how can be done this, so that it has a chance to go into
> mainline?

Your GPIO could (should) be bound to a gpio-keys driver which will=20
deliver key presses event; which you can ultimately bind to the action=20
of triggering a system reboot.

Granted, this makes you cross a lot of layers, and requires user-space=20
to implemnt the reboot policy, but what you are asking for is both a=20
mechanism and policy mix, which is usually not accepted.

You are probably working with HW which won't change, but wiring a reset=
=20
button to a system reset output is usually much simpler ;)

>
> Thanks for any suggestions
>
> bye,
> Heiko