From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TgtUi-0002OI-D9 for barebox@lists.infradead.org; Fri, 07 Dec 2012 08:41:17 +0000 From: Juergen Beisert Date: Fri, 7 Dec 2012 09:38:35 +0100 References: <10036346.7roAWQEoPH@yiqingliang-pc> <201212060909.10852.jbe@pengutronix.de> <5693537.UlV3N7R00O@yiqingliang-pc> In-Reply-To: <5693537.UlV3N7R00O@yiqingliang-pc> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <201212070938.35716.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: about the dm9000 in mini2440 To: barebox@lists.infradead.org Yi Qingliang wrote: > I got it finally, but not root cause. > reproduce: > > 1. connect jtag with openjtag(not the official openjtag, but 100ask.net > produced based on openmoko's). > 2. use ON/OFF switch on the board > > then I got "Wrong databus" > but if I disconnect the power line, and reconnect it, everything OK. > and if not connect jtager, and use ON/OFF switch, everyghing OK. > > what's the fuck problem? Good question. The DM9000 uses the EED0 pin to decide if a 16 or 32 bit data bus is in use, when the reset signal is gone. Maybe your system does not "see" a correct reset. Regards, Juergen -- 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