Hi all,

> Thanks William.  I read that thread (which has more to do with Audio Cape's 
> conflicts with the LCD Cape) and tried on a whim just commenting out pins 18 
> and 19, plus renaming the 
> dtbo to BB-BONE-AUDI-03 but nothing changed... P9_28 is still flat when 
> playing sound.

I'm using a later kernel version but I think the basic configurations should 
still apply (i.e. same pins/same overlay/same cape)

Gists here https://gist.github.com/ca8a33407cdef56cdb3e.git and here 
https://gist.github.com/1605ceb9c4565141cae2.git show slots and pinmux before 
and after loading the audio overlay.

I'm getting a couple of odd messages in dmesg:

[  709.782296] davinci_evm ocp:sound: ASoC: CPU DAI (null) not registered
[  709.789827] davinci_evm ocp:sound: snd_soc_register_card failed (-517)
[  709.813163] davinci_evm ocp:sound: tlv320aic3x-hifi <-> 48038000.mcasp 
mapping ok

Most importantly without an audio cape in place 

root@arm:/# speaker-test -D default:EVM 

appears to work. 

With a cape in place there are recurring error messages about buffer underruns 
as I reported here last week. 

In neither case do I see any obvious I2S activity.  There is a tool set for I2C 
manipulation. It would be really helpful to have one for I2S!.




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