[alsa-devel] uda1380 and pxa255 plays nothing but noise

[Vasily Khoruzhick]

On Tue, Aug 7, 2012 at 10:41 PM, nerwusek <luk0104 at gmail.com> wrote:
> On 07.08.2012 21:26, Mark Brown wrote:
>>
>> Have you checked that the output isn't muted, has the audio routed to the
>> output you're using and has a suitable volume?
>
> Yes I have checked all that things. I have 2 routes from VOUTHP{LR} and from
> VOUT{LR} and I think it's ok because of info in logs "asoc: uda1380-hifi <->
> pxa2xx-i2s mapping ok".
> I have also observed that if I change Output Mux from DAC to Analog Mixer
> and change Anolog Mixer volume up the noise and louder.
> In my opinion problem is somewhere else. I think that I forgot to enable sth
> in ALSA. As I said when I enabled I2C debugging data flows only when
> playback is starting or when I change values in alsamixer, when music is
> played no data are send to codec.

Audio data should be sent over I2S, so there's no I2C traffic during
audio playback.

Regards
Vasily

> Łukasz Dałek