Hi Mark > > AUDIO-CLKOUTn can synchronizes with L/R clock, and Salvator board > > needs it. Otherwise, specific frequency sound will be noisy. > > Why would a user not want these clocks to be synchronous? A lot of > CODECs will at least have better performance if their master clock is > synchronous to the audio clocks so it'd be a better default, is there an > advantage to not doing it? I'm now confusing. We can set system clock on audio card, for example simple-card case, it is called as "system-clock-frequency". In my understanding, this "system clock" and above "master clock" are same clock. but "system clock" is fixed rate (= not related to audio clock in many cases). Because of this, some codec doesn't request synchronous between master clock <-> audio clock, but, some codec requests synchronous it. Am I wrong ??
