From: Yu-Hsuan Hsu <yuhsuan@xxxxxxxxxxxx>
The CRAS server does not set the period size in hw_param so ALSA will
calculate a value for period size which is based on the buffer size
and other parameters. The value may not always be aligned with Atom's
dsp design so a constraint is added to make sure the board always has
a good value.
Cyan uses chtmax98090 and others(banon, celes, edgar, kefka...) use
rt5650.