> Enabling SOF interrupts will be a big pain :-) Well, enabling the
> interrupt itself is a no-brainer, but it'll cause terrible CPU overload.

Oh, I see. Hmm... would it be possible to allow upper levels to config this 
dynamically ? I.e. for the ALSA subsystem there is no need for the SOF 
timestamps, whereas for my proposal they would be needed.

 And what kind of CPU overhead are we talking about ? The IRQs shouldn't come 
more often than every 125 us, and all that is needed is to take a timestamp 
value 😊 But I'm probably overlooking a lot of stuff... 

Regards
/Robert

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