From: Juergen Beisert <jbe@pengutronix.de>
To: barebox@lists.infradead.org
Subject: Re: [PATCH 2/2] Add two architectures which can detect the reset source
Date: Thu, 21 Jun 2012 21:01:42 +0200 [thread overview]
Message-ID: <201206212101.42996.jbe@pengutronix.de> (raw)
In-Reply-To: <20120621182757.GF28394@pengutronix.de>
Hi Sascha,
Sascha Hauer wrote:
> On Thu, Jun 21, 2012 at 11:16:18AM +0200, Juergen Beisert wrote:
> > These are examples how to provide the reset source. Not really tested on
> > the corresponding hardware yet.
>
> I did. On i.MX1 it does not work. The reset source register is not
> inside the watchdog module, but at 0x0021b800 (Reset source register,
> RSR)
Hmm, in my old MC9328MX1 manual the watchdog register at 0x201008 (=Watchdog
Status Register) reports in bit 0 (=TOUT) if the watchdog timed out.
But the RSR seems a more reliable source to read the status.
> On i.MX27 it correctly detects a watchdog reset but not a power on
> reset. On i.MX27 it must be:
>
> # define WDOG_WRSR_EXT (1 << 3)
> # define WDOG_WRSR_PWR (1 << 4)
Ups, sure. "not really tested"...I told you so ;)
> i.MX51 does not seem to have a power-on-reset bit, at least not in the
> watchdog module. I didn't check the other i.MXs
Time for a #ifdef hell?
jbe
--
Pengutronix e.K. | Juergen Beisert |
Linux Solutions for Science and Industry | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2012-06-21 19:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-21 9:16 [PATCHv2] Enable a way to provide the reason for "being here" Juergen Beisert
2012-06-21 9:16 ` [PATCH 1/2] " Juergen Beisert
2012-06-21 9:16 ` [PATCH 2/2] Add two architectures which can detect the reset source Juergen Beisert
2012-06-21 18:27 ` Sascha Hauer
2012-06-21 19:01 ` Juergen Beisert [this message]
2012-06-21 19:03 ` Sascha Hauer
2012-06-21 21:50 ` Roberto Nibali
-- strict thread matches above, loose matches on Subject: below --
2012-06-20 14:32 [PATCH] Enable a way to provide the reason for "being here" Juergen Beisert
2012-06-20 14:32 ` [PATCH 2/2] Add two architectures which can detect the reset source Juergen Beisert
2012-06-20 14:59 ` Marc Kleine-Budde
2012-06-20 15:05 ` Juergen Beisert
2012-06-20 15:09 ` Marc Kleine-Budde
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