From mboxrd@z Thu Jan  1 00:00:00 1970
From: broonie@opensource.wolfsonmicro.com (Mark Brown)
Date: Thu, 10 Mar 2011 16:19:18 +0000
Subject: [RFC PATCHv1 1/2] Export SoC info through sysfs
In-Reply-To: <201103101711.59544.arnd@arndb.de>
References: <1299689961-5028-1-git-send-email-maxime.coquelin-nonst@stericsson.com>
	<201103101602.19241.arnd@arndb.de>
	<20110310152011.GH22195@opensource.wolfsonmicro.com>
	<201103101711.59544.arnd@arndb.de>
Message-ID: <20110310161917.GD27206@opensource.wolfsonmicro.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Thu, Mar 10, 2011 at 05:11:59PM +0100, Arnd Bergmann wrote:
> On Thursday 10 March 2011, Mark Brown wrote:

> > You could, though the bus will just be a noop.  Typically it's more than
> > one bus but software basically can't tell.

> Yes. The main reason for representing such a bus in sysfs would be
> to match the SOC's block diagram with the structure in the kernel.

If you're doing that things like power domains tend to be a lot more
interesting since you can do something meaningful with them in software.
The non-visible buses aren't reliably documented anyway and the first
procesor datasheet I just pulled up had a whole bunch of devices that
span multiple buses anyway :)