linux-mips
[Top] [All Lists]

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

To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Subject: Re: [PATCH] IP22: Disable EARLY PRINTK, because it breaks serial console
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Thu, 8 Nov 2007 11:12:21 +0000 (GMT)
Cc: Martin Michlmayr <tbm@cyrius.com>, Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org
In-reply-to: <20071107215423.GA11915@alpha.franken.de>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20070911104459.GB7624@alpha.franken.de> <20071030073349.GA15984@deprecation.cyrius.com> <Pine.LNX.4.64N.0711071648040.14970@blysk.ds.pg.gda.pl> <20071107215423.GA11915@alpha.franken.de>
Sender: linux-mips-bounce@linux-mips.org
On Wed, 7 Nov 2007, Thomas Bogendoerfer wrote:

> 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...

 Synchronous and DMA operation is the tough part, at least for the 
DECstation.  OTOH, such a framework actually exists already as 
drivers/net/wan/z85230.[ch], but fitting it into the serial subsystem is a 
lot of work as the serial core currently has no notion of synchronous 
modes at all.  Ultimately you'd like to be able to switch between 
asynchronous and synchronous line disciplines on a port by port basis 
(possibly including halves of the same chip).

  Maciej

<Prev in Thread] Current Thread [Next in Thread>