On Mon, 03 Aug 2020 18:45:29 +0200, Lu, Brent wrote: > > > > Hi Takashi, > > > > > > I've double checked with google. It's a must for Chromebooks due to > > > low latency use case. > > > > I wonder if there's a misunderstanding here? > > > > I believe Takashi's question was "is this a must to ONLY accept 240 samples > > for the period size", there was no pushback on the value itself. > > Are those boards broken with e.g. 960 samples? > > I've added google people to discuss directly. > > Hi Yuhsuan, > Would you explain why CRAS needs to use such short period size? Thanks. For avoid further misunderstanding: it's fine that CRAS *uses* such a short period. It's often required for achieving a short latency. However, the question is whether the driver can set *only* this value for making it working. IOW, if we don't have this constraint, what actually happens? If the driver gives the period size alignment, wouldn't CRAS choose 240? Takashi
