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

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Message-ID: <20140225035558.GA7393@MrMyself>
Date:	Tue, 25 Feb 2014 11:55:59 +0800
From:	Nicolin Chen <Guangyu.Chen@...escale.com>
To:	Fabio Estevam <festevam@...il.com>
CC:	Mark Brown <broonie@...nel.org>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"Austin, Brian" <Brian.Austin@...rus.com>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	"Handrigan, Paul" <Paul.Handrigan@...rus.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"rob@...dley.net" <rob@...dley.net>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
Subject: Re: [alsa-devel] [PATCH] ASoC: cs42888: Add codec driver support

On Tue, Feb 25, 2014 at 12:54:04AM -0300, Fabio Estevam wrote:
> Hi Nicolin,
> 
> On Tue, Feb 25, 2014 at 12:46 AM, Nicolin Chen
> <Guangyu.Chen@...escale.com> wrote:
> >> So register it from the ESAI driver then.
> >
> > Then I think I need to find a way to pass the clock to CODEC driver...
> 
> Does this example from mxs-saif help?

Absolutely yes! Thank you in advance :)

> 
> commit 7c9e6150f2e7cbd60e0bc9a19118ca1dc97d2780
> Author: Shawn Guo <shawn.guo@...aro.org>
> Date:   Mon Jul 1 16:16:10 2013 +0800
> 
>     ASoC: mxs: register saif mclk to clock framework
> 
>     Mostly the mxs system design uses saif0 mclk output as the clock source
>     of codec.  Since the mclk is implemented as a general divider with the
>     saif clk as the parent clock, let's register the mclk as a basic
>     clk-divider to common clock framework.  Then with it being a clock
>     provdier, clk_get() call in codec driver probe function will just work.
> 
>     Signed-off-by: Shawn Guo <shawn.guo@...aro.org>
>     Signed-off-by: Mark Brown <broonie@...aro.org>
> 
> 


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