linux-kernel - Re: [PATCH] ASoC: cs42888: Add codec driver support

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Date:	Tue, 25 Feb 2014 12:39:29 +0900
From:	Mark Brown <broonie@...nel.org>
To:	Nicolin Chen <Guangyu.Chen@...escale.com>
Cc:	"Austin, Brian" <Brian.Austin@...rus.com>,
	"Handrigan, Paul" <Paul.Handrigan@...rus.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"rob@...dley.net" <rob@...dley.net>,
	Liam Girdwood <lgirdwood@...il.com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
Subject: Re: [PATCH] ASoC: cs42888: Add codec driver support

On Tue, Feb 25, 2014 at 11:13:14AM +0800, Nicolin Chen wrote:
> On Tue, Feb 25, 2014 at 12:09:47PM +0900, Mark Brown wrote:

> > We should be able to arrange to have the ESAI be a clock provider
> > shouldn't we?  If the clocks need to interface to other things (and they
> > do) then we should be able to use the standard interface we have to
> > clocks.

> Excuse me, I think I just don't get the approach how to use clock API to
> standardize the MCLK derived from ESAI IP: it's surely not a fixed-clock
> so we couldn't register in DT and it's not SoC internal clock which means
> we couldn't register it in the SoC clock driver either.

> Could you please shed me some light on it?

So register it from the ESAI driver then.

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