From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Schweigstill Date: Mon, 28 Apr 2008 14:26:01 +0200 Subject: [U-Boot-Users] --- at91, Nand In-Reply-To: <1752253171.20080428153248@tst.spb.su> References: <1752253171.20080428153248@tst.spb.su> Message-ID: <4815C259.3080706@schweigstill.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello! Zhukov schrieb: > I change PC1 to PC7 within u-boot everywhere, it won't work: > I see SMWE strobe (pin PC3) drops down and never rises, the system > hangs... Are you also using PC6 for any purpose? Do you (accidentally) configure it as an output? Or do you either use it as an input or don't enable an internal or external pull-up resistor? You should check the signal level on PC6 in order to find out if you hit erratum "NWAIT activity depend on use of PC6". With best regards Andreas Schweigstill -- Dipl.-Phys. Andreas Schweigstill Schweigstill IT | Embedded Systems Schauenburgerstra?e 116, D-24118 Kiel, Germany Phone: (+49) 431 5606-435, Fax: (+49) 431 5606-436 Mobile: (+49) 171 6921973, Web: http://www.schweigstill.de/