[alsa-devel] [PATCH] ASoC: da7219: remove SRM lock check retry

[Lu, Brent]

> 
> But on platforms where they can enable the WCLK early they shouldn't be
> looping around here for anything like 400ms. In an ideal world when that
> widget is run SRM should hopefully be already locked but the code does
> allow for some delay. Actually, having a long delay also helps show the user
> that something isn't right here so I'm somewhat loathed to change this.
> 
> Even if you do reduce the retry timings what you're still not protecting
> against is the possibility of audio artefacts when SRM finally locks. You want
> this to lock before the any of the audio path is up so I think we need to find a
> way to resolve that rather than relying on getting lucky with a smooth power-
> up.
> 
Hi Adam,

Thanks for the explanation. So the purpose of the code is providing some
timing tolerance for SRM to lock? If so, I would suggest adding warning message
for the lock fail so people have a clue if their design fails the CTS test. Hard to say
if Google further reduces the Cold latency again in the future.


Regards,
Brent