> > > > I also wonder what's really missing, too :) > > > > BTW, I took a look back at the thread, and CRAS seems using a very > > large buffer, namely: > > [ 52.434791] sound pcmC1D0p: PERIOD_SIZE [240:240] > > [ 52.434802] sound pcmC1D0p: BUFFER_SIZE [204480:204480] > > yes, that's 852 periods and 4.260 seconds. Never seen such values :-)
CRAS calls snd_pcm_hw_params_set_buffer_size_max() to use as large buffer as possible. So the period size is an arbitrary number in different platforms. Atom SST platform happens to be 256, and CML SOF platform is 1056 for example. Regards, Brent
