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From: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Shengjiu Wang <shengjiu.wang-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: pawel.moll-5wv7dgnIgG8@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
	galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
	timur-N01EOCouUvQ@public.gmane.org,
	nicoleotsuka-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	Xiubo.Lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	perex-/Fr2/VpizcU@public.gmane.org,
	tiwai-IBi9RG/b67k@public.gmane.org,
	shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org,
	linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH V2 3/3] ASoC: fsl_asrc: spba clock is needed by asrc device
Date: Fri, 20 Nov 2015 08:29:46 -0600	[thread overview]
Message-ID: <20151120142946.GA6949@rob-hp-laptop> (raw)
In-Reply-To: <7b40da78c965d4152c15794ec527c75198c9e2f9.1447997800.git.shengjiu.wang-KZfg59tc24xl57MIdRCFDg@public.gmane.org>

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-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> ---
>  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.

Rob
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  parent reply	other threads:[~2015-11-20 14:29 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 [this message]
2015-11-20 22:00       ` Nicolin Chen

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