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From: Nicolin Chen <nicoleotsuka@gmail.com>
To: Rob Herring <robh@kernel.org>
Cc: Shengjiu Wang <shengjiu.wang@freescale.com>,
	pawel.moll@arm.com, mark.rutland@arm.com,
	ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
	timur@tabi.org, Xiubo.Lee@gmail.com, lgirdwood@gmail.com,
	broonie@kernel.org, perex@perex.cz, tiwai@suse.com,
	shawnguo@kernel.org, alsa-devel@alsa-project.org,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org
Subject: Re: [PATCH V2 3/3] ASoC: fsl_asrc: spba clock is needed by asrc device
Date: Fri, 20 Nov 2015 14:00:16 -0800	[thread overview]
Message-ID: <20151120220015.GA10156@Asurada> (raw)
In-Reply-To: <20151120142946.GA6949@rob-hp-laptop>

On Fri, Nov 20, 2015 at 08:29:46AM -0600, Rob Herring wrote:
> On Fri, Nov 20, 2015 at 02:17:53PM +0800, Shengjiu Wang wrote:
> > ASRC need to enable the spba clock, when sdma is using share peripheral
> > script. In this case, there is two spba master port is used, if don't
> > enable the clock, the spba bus will have arbitration issue, which may
> > cause read/write wrong data from/to ASRC registers
> > 
> > Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
> > ---
> >  Documentation/devicetree/bindings/sound/fsl,asrc.txt |  2 ++
> >  sound/soc/fsl/fsl_asrc.c                             | 10 ++++++++++
> >  sound/soc/fsl/fsl_asrc.h                             |  1 +
> >  3 files changed, 13 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/sound/fsl,asrc.txt b/Documentation/devicetree/bindings/sound/fsl,asrc.txt
> > index b93362a..d8eeee3 100644
> > --- a/Documentation/devicetree/bindings/sound/fsl,asrc.txt
> > +++ b/Documentation/devicetree/bindings/sound/fsl,asrc.txt
> > @@ -25,6 +25,8 @@ Required properties:
> >  	"mem"		  Peripheral access clock to access registers.
> >  	"ipg"		  Peripheral clock to driver module.
> >  	"asrck_<0-f>"	  Clock sources for input and output clock.
> > +	"spba"		  The spba clock is needed when two spba master port
> > +			  is used.
> 
> I'm assuming the same comments on patch 1 apply to all 3.

Yes. I should have mentioned that.

Nicolin

      reply	other threads:[~2015-11-20 22:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-20  6:17 [PATCH V2 0/3] add spba clock for fsl audio IP Shengjiu Wang
2015-11-20  6:17 ` [PATCH V2 1/3] ASoC: fsl_esai: spba clock is needed by esai device Shengjiu Wang
2015-11-20  7:39   ` Nicolin Chen
2015-11-20  6:17 ` [PATCH V2 2/3] ASoC: fsl_spdif: spba clk is needed by spdif device Shengjiu Wang
2015-11-20  6:17 ` [PATCH V2 3/3] ASoC: fsl_asrc: spba clock is needed by asrc device Shengjiu Wang
     [not found]   ` <7b40da78c965d4152c15794ec527c75198c9e2f9.1447997800.git.shengjiu.wang-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2015-11-20 14:29     ` Rob Herring
2015-11-20 22:00       ` Nicolin Chen [this message]

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