[alsa-devel] Question about codec which is supporting TDM / 5.1ch

[Kuninori Morimoto]

Hi Mark

> > Now, we want to create new board, and then, we want to use below codec if exist.
> > Can you show it to us if it was exist ?
> > (I researched it on upstream Linux source tree, but couldn't find....)
> 
> >  - upstream Linux supports its driver
> >  - it supports TDM format
> >  - it supports 5.1ch sound
> >  - it supports DT bindings (if possible) 
> 
> Some of the Wolfson/Cirrus mobile CODECs can do that with some fiddling
> and mixing of output types but they're not really a good fit.  Most of
> the things doing 5.1 are like the WM8580 - they use separate data lines
> rather than TDM, as far as I can tell a lot of 5.1 systems out there do
> this by hooking up multiple stereo CODECs in parallel as slaves rather
> than by using a single 5.1 CODEC.

Thank you for your information.
I guess multi-codec is for this purpose ?

If yes, I wonder what is different between DPCM and multi-codec ?


Best regards
---
Kuninori Morimoto