From: Jon Anders Haugum <jonah@omegav.ntnu.no>
To: Mark Schank <mschank@dcbnet.com>
Cc: linux-mips@linux-mips.org
Subject: Re: Alchemy Au1550 Early Console
Date: Fri, 24 Mar 2006 11:58:35 +0100 (CET) [thread overview]
Message-ID: <20060324114653.S15728@invalid.ed.ntnu.no> (raw)
In-Reply-To: <5.1.0.14.2.20060322165104.02a32800@205.166.54.3>
On Wed, 22 Mar 2006, Mark Schank wrote:
> I am working with a Au1550 based system an am trying to upgrade
> from the 2.6.12 kernel to the 2.6.16 kernel . I have noticed that the
> au1x00_uart.c driver has been remove and replaced with functionality in
> 8250.c and 8250_au1x00.c. So far, I have been unable to get the early
> console running. Under this new driver model, what is the proper
> way to bring up an early console on a Au1550 internal serial port?
Have you enabled the console for 8250-based serial ports?
(CONFIG_SERIAL_8250_CONSOLE)
Another issue might be if you have got some PCI-based serial ports in the
system, because they will be assigned before the internal ones. So you
might end up having the console on a PCI serial port.
Third: There is a bug in the new driver regarding divisor settings, but
the console should still be working since the boot loader will init the
uart properly. (I've posted a patch for this bug earlier:
http://www.linux-mips.org/archives/linux-mips/2006-03/msg00041.html).
Jon
next prev parent reply other threads:[~2006-03-24 10:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-22 23:08 Alchemy Au1550 Early Console Mark Schank
2006-03-24 10:58 ` Jon Anders Haugum [this message]
2006-03-26 3:24 ` Mark Schank
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