+SectionPCMCapabilities."DMIC-Capture" {
+ formats "S16_LE"
+ rates "48000"
+ channels_min "2"
+ channels_max "2"
+ sig_bits "16"
+}
NHLT reports 4 microphones on a number of devices, is there any specific
reason to limit the capture to 2ch?
I believe the generic Hdaudio card now reports the number of channels to
pulseaudio, so it's possible that PulseAudio would open a 4ch stream but
be told sorry no can do by topology.
FWIW we ended-up selecting different topology files in SOF, depending on
whether we had 0, 2 or 4 mics.
