On Mon, Feb 10, 2020 at 04:16:51PM +0800, Brent Lu wrote: > Intel sst firmware turns on BCLK/WCLK in START Ioctl call which timing is > later than the DAPM SUPPLY event handler da7219_dai_event is called (in > PREPARED state). Therefore, the SRM lock check always fail. > > Moving the check to trigger callback could ensure the SRM is locked before > DSP starts to process data and avoid possisble noise. Independently of any other discussion trigger is expected to run very fast so doesn't feel like a good place to do this - given that we're talking about doing this to avoid noise the mute operation seems like a more idiomatic place to do this, it exists to avoid playing back glitches from the digitial interface during startup.
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