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From: philippe.retornaz@gmail.com (Philippe Rétornaz)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mfd: mc13xxx: Configure WDI reset
Date: Mon, 08 Sep 2014 14:06:36 +0200	[thread overview]
Message-ID: <540D9BCC.2000801@gmail.com> (raw)
In-Reply-To: <20140908092559.GB24081@pengutronix.de>

Le 08/09/2014 11:25, Markus Pargmann a ?crit :
> Hi,
>
> On Mon, Sep 08, 2014 at 09:42:35AM +0200, Philippe R?tornaz wrote:
>> Hello
>>
>> Le 08/09/2014 09:01, Markus Pargmann a ?crit :
>>> Setup the PMIC to make a restart when a watchdog interrupt occures.
>>> If this is not configured, the PMIC will shut down the power supply
>>> without a restart.
>>
>>
>> Well, this was used to poweroff the mx31moboard board.
>> So we need to be able to configure the functionality.
>
> So on mx31moboard the watchdog interrupt always leads to a poweroff instead of
> a reset?

Well, no, it simply doesn't work since the output pin is not enabled :)
We enable the watchdog output only in pm_power_off().

> Perhaps it would be better to switch back to poweroff on
> watchdog interrupt right before the shutdown watchdog interrupt is
> triggered.

Yes, we definitely should be doing this.
The only point is that we don't have currently access to the PMIC from 
pm_power_off().
Is there a clean/recommended way to do it ?

Thanks !

Philippe

  reply	other threads:[~2014-09-08 12:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-08  7:01 [PATCH] mfd: mc13xxx: Configure WDI reset Markus Pargmann
2014-09-08  7:27 ` Lee Jones
2014-09-08  7:42 ` Philippe Rétornaz
2014-09-08  9:25   ` Markus Pargmann
2014-09-08 12:06     ` Philippe Rétornaz [this message]
2014-09-09  5:51       ` Markus Pargmann

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