It seems the Sound Card Driver for the ADAU1962 only supports 2-channel output, despite having controls for the volume of all 12 DACs.
When I run the command:
speaker-test -D hw:0,0 -c 8 -t sine -F S32_LE
I get an error: "Channels count (8) not available for playbacks: Invalid argument".
Is there anything that can be done to enable 8-channel audio output on this hardware through ALSA?
Thanks for your question, I'll give you update after I debug it locally, thanks a lot.
Any update on this, I have also similar issue, I'm not able to listen any audio output from other than 1st two channels.
Sorry for the late reply.
This multichannel output is not supportted in our exsiting release but is in developing. This new feature needs a new TDM linux driver support rather than I2S driver to support the multi-channel audio output.
Please keep an eye on our next release. Thanks for looking this.