linux-kernel - Re: [PATCH 2/2] ARM: Dove: Add the audio device to the Cubox DT

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Date:	Sun, 01 Sep 2013 11:26:54 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	"Jean-Francois Moine" <moinejf@...e.fr>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	Jason Cooper <jason@...edaemon.net>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ian.campbell@...rix.com>,
	Russell King <linux@....linux.org.uk>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] ARM: Dove: Add the audio device to the Cubox DT

Jean-Francois,
Sorry for the messy reply, posting from mobile.

Can you please try <&si5351 1>, iirc audio ist connected to it. I will also 
look it up later.

Sebastian



On August 31, 2013 12:51:28 PM Jean-Francois Moine <moinejf@...e.fr> wrote:
> On Wed, 28 Aug 2013 12:14:24 +0200
> Sebastian Hesselbarth <sebastian.hesselbarth@...il.com> wrote:
>
> > > +&i2s1 {
> > > +	status = "okay";
> > > +	pinctrl-0 = <&pmx_audio1_i2s1_spdifo>;
> > > +	pinctrl-names = "default";
> > > +};
> > Please also add the external clock connected from si5351.
>
> Hi Sebastian and Russell,
>
> I tried it on my Cubox (<&si5351 2>), and I have problems with HDMI
> output and some audio streams like webradios with sample rates 32 or
> 22.05 kHz.
>
> According to the Dove specification, the audio controller works with
> the samples rates 44.1, 48 and 96 kHz, so, I don't see the usage of the
> external clock, except when using the two audio controllers with
> different sample rates.
>
> But, BTW, as the kirkwood-i2 driver is written, this last case does not
> work: for 44.1, 48 and 96 kHz, the external clock is never used and
> there is only one DCO.
>
> --
> Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
> Jef		|		http://moinejf.free.fr/


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