From: Andrew Morton <akpm@osdl.org>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: vandrove@vc.cvut.cz, cw@f00f.org, linux-kernel@vger.kernel.org
Subject: Re: XScale 8250 patches cause malfunction on AMD-8111
Date: Mon, 7 Mar 2005 18:16:51 -0800 [thread overview]
Message-ID: <20050307181651.4a87651d.akpm@osdl.org> (raw)
In-Reply-To: <20050307213148.B29948@flint.arm.linux.org.uk>
Russell King <rmk+lkml@arm.linux.org.uk> wrote:
>
> On Mon, Mar 07, 2005 at 08:56:54PM +0100, Petr Vandrovec wrote:
> > Well, problem is not in bit 6 in IER, but in bit 6 in high divisor byte,
> > as DLAB is set to one from previous probe. This simple clear of LCR
> > register fixes problem with (probably all 16550A) chips being detected
> > as XScale, and in addition to it it does not switch my 115200Bd serial
> > line to 7Bd mode (0x4001 divisor) anymore.
>
> Good catch, thanks. I'd preferably like to see Chris Wedgwood test this
> before applying it - I'm sure it'll fix his problem as well, but I'd
> like to be sure.
It fixes it on my box. Thanks, all.
next prev parent reply other threads:[~2005-03-08 2:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-07 17:45 Petr Vandrovec
2005-03-07 19:56 ` Petr Vandrovec
2005-03-07 21:31 ` Russell King
2005-03-08 2:16 ` Andrew Morton [this message]
2005-03-10 21:05 ` Chris Wedgwood
2005-03-10 21:21 ` Russell King
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