[alsa-devel] [PATCH] ASoC: Ensure we delay long enough for WM8994 FLL to lock when starting

Sangbeom Kim sbkim73 at samsung.com
Mon Jul 4 03:13:56 CEST 2011

On Mon, Jul 04, 2011 at 09:45 AM +0900, Mark Brown wrote:
> > > This delay is very conservative.
> > What's the meaning of conservative?
> In this context it means safe.
> > It means 5ms delay long enough?
> > or at least, FLL lock time should be ensured 5ms?
> Yes, the 5ms should be more than enough time for the FLL to lock - in
> most situations the time taken to do the register writes surrounding
> enabling and then using the FLL are sufficient to cover the startup
> time.

I have a one more question.
Is there any checking method for locking FLL?
(ex. Checking register bit for FLL lock)
Just using msleep looks not enough to ensure FLL lock.

SB Kim

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