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Re: [PATCH] IP22: Disable EARLY PRINTK, because it breaks serial console

To: Martin Michlmayr <tbm@cyrius.com>
Subject: Re: [PATCH] IP22: Disable EARLY PRINTK, because it breaks serial console
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Wed, 7 Nov 2007 16:55:10 +0000 (GMT)
Cc: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org, Thomas Bogendoerfer <tsbogend@alpha.franken.de>
In-reply-to: <20071030073349.GA15984@deprecation.cyrius.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20070911104459.GB7624@alpha.franken.de> <20071030073349.GA15984@deprecation.cyrius.com>
Sender: linux-mips-bounce@linux-mips.org
On Tue, 30 Oct 2007, Martin Michlmayr wrote:

> * Thomas Bogendoerfer <tsbogend@alpha.franken.de> [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: 
"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.

 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...

  Maciej

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