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

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Message-ID: <20130926101147.217015e1@armhf>
Date:	Thu, 26 Sep 2013 10:11:47 +0200
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
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

On Sun, 01 Sep 2013 11:26:54 +0200
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com> wrote:

> 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,

In the Cubox, I changed the audio DT to:

&i2s1 {
	status = "okay";
	clocks = <&gate_clk 13>, <&si5351 1>;
	clock-names = "internal", "extclk";
	pinctrl-0 = <&pmx_audio1_i2s1_spdifo &pmx_gpio_13_audio1>;
};

and the sound does not get out correctly.

There is no sound at all, except when restarting playing which gives
some shrill sound for half a second at start time.

I lowered the rate in kirkwood-i2s, setting the clock by (* 128)
instead of (* 256), and, most of the time, this gives continuous shrill
and chopped sound at various sample rates (22.05, 32 and 44.1 kHz).
Lowering the clock to (* 64) gives no sound at all.

For more information, I use i2s input in the tda998x with audio rate
96kHz on HDMI output. The sound is fine with the internal dco (tested
with 44.1kHz only).

Some idea?

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
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