linux-kernel - Re: [PATCH 1/2] ARM: debug: Add CLSP711X

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Message-ID: <20110919224151.GB28237@n2100.arm.linux.org.uk>
Date:	Mon, 19 Sep 2011 23:41:51 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Will Deacon <will.deacon@....com>, Arnd Bergmann <arnd@...db.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/2] ARM: debug: Add CLSP711X_UART1 config choice

On Mon, Sep 19, 2011 at 03:12:04PM -0700, Stephen Boyd wrote:
> On 09/19/11 14:25, Will Deacon wrote:
> > Thanks for cooking the patch, it was somewhere on my list of things to do
> > this week! I think we also need to fix the DEBUG_DC21285_PORT option as that
> > has a similar `if not selected then use a different UART' behaviour. It can be
> > fixed in the same way as you have done in this patch.'
> 
> Ah my eyes glossed over the DC21285 one. Here's one on top of patch 2.
> Feel free to squash, etc.

Err, the DC21285 only has one serial port.

Some footbridge platforms expose the DC21285 to the outside world, others
don't.  Some footbridge platforms have a separate 8250 UART at the standard
PCI COM1 address, others don't.

What DEBUG_DC21285_PORT is selecting between is whether to use the DC21285
port (when set) or the 8250 at PCI COM1 (when unset).
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