From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1ShmdI-000784-Dx for barebox@lists.infradead.org; Thu, 21 Jun 2012 19:01:32 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1ShmdH-0000lQ-Bg for barebox@lists.infradead.org; Thu, 21 Jun 2012 19:01:32 +0000 From: Juergen Beisert Date: Thu, 21 Jun 2012 21:01:42 +0200 References: <1340270178-2615-1-git-send-email-jbe@pengutronix.de> <1340270178-2615-3-git-send-email-jbe@pengutronix.de> <20120621182757.GF28394@pengutronix.de> In-Reply-To: <20120621182757.GF28394@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <201206212101.42996.jbe@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH 2/2] Add two architectures which can detect the reset source To: barebox@lists.infradead.org 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/ | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox