linux-kernel - Re: [PATCH 13/18] ARM: ux500: Add ux500 PCM to DB8500 Device Tree

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Date:	Mon, 30 Jul 2012 16:02:53 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	STEricsson_nomadik_linux@...t.st.com, linus.walleij@...ricsson.com,
	arnd@...db.de, olalilja@...oo.se, ola.o.lilja@...ricsson.com,
	alsa-devel@...a-project.org, lrg@...com
Subject: Re: [PATCH 13/18] ARM: ux500: Add ux500 PCM to DB8500 Device Tree

On Mon, Jul 30, 2012 at 03:26:58PM +0100, Lee Jones wrote:
> On 30/07/12 14:40, Mark Brown wrote:

> >>We use it register the driver for probe()ing. In the same way we do
> >>for the PMU and Regulators. All three of which actually belong to a
> >>different hardware block. Do you know of a better way to register
> >>those devices?

> >You've not identified which of the two cases above we're in...  assuming
> >it's a virtal device look at how the DT bindings for the other platforms
> >are doing things.

> I thought it would have been obvious by my response. The PMU seems
> to be a virtual device with no registers or IRQs.

That's not at all obvious, no.

> I've found a DT which seems to do it in the same way as I do
> 'arch/powerpc/boot/dts/p1022ds.dts', but some others call PCM
> registration from the CPU-side DAI probe(). Would that be your
> preference?

Yes, do what the other drivers are doing
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