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From: Jochen Friedrich <jochen@scram.de>
To: DI BACCO ANTONIO - technolabs <Antonio.DiBacco@technolabs.it>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: linux2.6.19.2-> mpc8xx_wdt.c: timeout extended to reach several seconds... but I have a problem
Date: Wed, 21 Nov 2007 13:51:53 +0100	[thread overview]
Message-ID: <474429E9.401@scram.de> (raw)
In-Reply-To: <F1F6EC0C8B75034F9E3A79FC85122E8E2649FB@aquib01a>

Hi Antonio,

> I added a kernel timer (triggering every 500 ms) to reset the watchdog
> of mpc8xx. This timer starts when the driver is opened. The timer is
> rearmed till a counter reaches a zero value. A process can use the write
> method of the driver to set the counter to a preferred value. If the
> application misses to set the counter, it will decrease to zero and then
> the board will restart.

You might want to have a look at this patch:

http://patchwork.ozlabs.org/linuxppc-embedded/patch?id=14682

Please make sure to call pq_wdt_init() as early as possible to avoid a
reset during the initial log buffer flush to the serial console.

Thanks,
Jochen

      reply	other threads:[~2007-11-21 12:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-20 20:26 linux2.6.19.2-> mpc8xx_wdt.c: timeout extended to reach several seconds... but I have a problem DI BACCO ANTONIO - technolabs
2007-11-21 12:51 ` Jochen Friedrich [this message]

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