Re: Audio support on OMAP 3430LDP or 4430SDP boards

[Russell King - ARM Linux <linux@arm.linux.org.uk>]

On Mon, Apr 30, 2012 at 10:26:45AM +0300, Peter Ujfalusi wrote:
> On 04/29/2012 11:35 PM, Russell King - ARM Linux wrote:
> > Please can someone at TI take a current mainline kernel, build it, and
> > test out audio support on the 4430SDP - specifically output through the
> > headset jack into a line input, and report when it works.  Thanks.
> 
> Try to use my attached aconf for SDP4430 to configure the HS playback.
> Note that the HS is not a line out, so on your line-in device it will
> cause distortion. If you have a headset/headphone you will have better
> quality.
> alsactl -f blaze.aconf restore
> 
> To play samples with aplay:
> aplay -Dplughw:0,0 <wav file>
> The sample format fot Legacy McPDM is S32_LE, 96KHz, 24bit (32 bit
> sample with 24 LSB).

I'm just having another go with OMAP4430 audio... and again I find that
I can't get anything out of the board.

I've followed what you've said above, and it doesn't work.  I've undone
my DMA engine changes.  Still doesn't work.  I've checked
/sys/kernel/debug/asoc for the codecs and DAIs, and they're there, and
the SDP4430 audio is shown in /proc/asound/cards too, and yes, you
guessed it, it still doesn't work.

It's just a really expensive /dev/null from what I can tell at the moment.

Frustrated.