RE: [PATCH 0/3] add channel constraint for BDW machine drivers

[Lu, Brent]

> >
> > Apart from review given for each and every patch (although most issues
> > are shared so there is not as much to address) my question is:
> > - are these hw limitations or software (machine board) limitations?

The limitation comes from board. Bdw-rt5677 and Broadwell are using I2S with
2 microphones while Bdw-rt5650 is using PCM TDM with 4 microphones. Our
DSP supports stereo playback and 2 or 4-channel capture (haswell/sst-haswell-pcm.c).


> >
> > Czarek
> >
> >> Brent Lu (3):
> >> ÂÂ ASoC: bdw-rt5677: channel constraint support
> >> ÂÂ ASoC: bdw-rt5650: channel constraint support
> >> ÂÂ ASoC: broadwell: channel constraint support
> >>
> >> Â sound/soc/intel/boards/bdw-rt5650.c | 34
> >> ++++++++++++++++++++++++++++++++++
> >> Â sound/soc/intel/boards/bdw-rt5677.c | 33
> >> +++++++++++++++++++++++++++++++++
> >>  sound/soc/intel/boards/broadwell.c | 33
> >> +++++++++++++++++++++++++++++++++
> >> Â 3 files changed, 100 insertions(+)
> >>