linux-kernel - Re: Handling of modular boards

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Date:	Wed, 9 May 2012 18:12:33 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org,
	Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Arnd Bergmann <arnd@...b.de>, Olof Johansson <olof@...om.net>,
	Stephen Warren <swarren@...dotorg.org>,
	Igor Grinberg <grinberg@...pulab.co.il>,
	linux-embedded@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Handling of modular boards

On Tue, May 08, 2012 at 02:26:54PM +0200, Linus Walleij wrote:
> On Fri, May 4, 2012 at 9:34 PM, Arnd Bergmann <arnd@...db.de> wrote:

> > Thanks for getting the discussion started. I've seen the same issue come
> > up for arch/arm/mach-ux500/board-mop500*uib.c and for the beaglebone.
> > I'm sure there are many more, but we should make sure that everyone
> > of these can live with whatever we come up with.

> The same issue sort of comes up with any system that uses the idiom
> to have a few GPIO lines indicate in a binary code what version of the
> board we're dealing with and what devices are thus on it, right?

> We have this issue for the U9540 reference design and potentially
> on the Snowball as well.

Yes, I think that's basically the same problem.

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