From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 07 Nov 2007 22:04:49 +0000 (GMT) Received: from elvis.franken.de ([193.175.24.41]:31898 "EHLO elvis.franken.de") by ftp.linux-mips.org with ESMTP id S20032348AbXKGWEl (ORCPT ); Wed, 7 Nov 2007 22:04:41 +0000 Received: from uucp (helo=solo.franken.de) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1Ipt0q-000136-00; Wed, 07 Nov 2007 23:04:40 +0100 Received: by solo.franken.de (Postfix, from userid 1000) id 3E6E3C2256; Wed, 7 Nov 2007 22:54:23 +0100 (CET) Date: Wed, 7 Nov 2007 22:54:23 +0100 To: "Maciej W. Rozycki" Cc: Martin Michlmayr , Ralf Baechle , linux-mips@linux-mips.org Subject: Re: [PATCH] IP22: Disable EARLY PRINTK, because it breaks serial console Message-ID: <20071107215423.GA11915@alpha.franken.de> References: <20070911104459.GB7624@alpha.franken.de> <20071030073349.GA15984@deprecation.cyrius.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) From: tsbogend@alpha.franken.de (Thomas Bogendoerfer) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 17442 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: tsbogend@alpha.franken.de Precedence: bulk X-list: linux-mips On Wed, Nov 07, 2007 at 04:55:10PM +0000, Maciej W. Rozycki wrote: > On Tue, 30 Oct 2007, Martin Michlmayr wrote: > > > * Thomas Bogendoerfer [2007-09-11 12:44]: > > > Disable EARLY PRINTK, because it breaks serial console > > > > Ralf, at the moment IP22 output stops after "Serial: IP22 Zilog driver > > (1 chips).". Can you put this patch in until there's a real fix? > > Is it by any chance the same problem that I noticed with the DECstation > and reported in the thread starting at: it's the same problem > "http://marc.info/?l=linux-kernel&m=119030963931879&w=2"? If so, there is > a fix for the DECstation provided somewhere down the discussion which you > may consider porting to IP22. I think the change to the serial core by > RMK mentioned there has already been applied upstream. I ported your fix, but it didn't work for me. Maybe because the IP22 zilog driver is still a little bit different than the DEC one. > Ideally, of course, all the SCC drivers should get merged eventually, but > due to subtle (and sometimes broken, as it is the case with the > DECstation) differences in wiring for various systems it may never really > happen, sigh... having a more generic zilog driver with platform backends is quite high on my todo list. But I won't make promisses when this happens... Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessary a good idea. [ RFC1925, 2.3 ]