Re: [alsa-devel] [PATCH] ASoC: wm8962: fix lambda value

From: Charles Keepax
Date: Fri Dec 13 2019 - 05:57:26 EST


On Fri, Dec 13, 2019 at 11:09:09AM +0800, Shengjiu Wang wrote:
> Hi
>
> On Fri, Dec 13, 2019 at 12:54 AM Mark Brown <broonie@xxxxxxxxxx> wrote:
> >
> > On Thu, Dec 12, 2019 at 04:48:35PM +0000, Charles Keepax wrote:
> > > On Wed, Dec 11, 2019 at 07:57:22PM +0800, Shengjiu Wang wrote:
> > > > According to user manual, it is required that FLL_LAMBDA > 0
> > > > in all cases (Integer and Franctional modes).
> >
> > > How well tested is this change, and is it addressing an issue you
> > > have observed? I agree this does better fit the datasheet just a
> > > little nervous as its an older part that has seen a lot of usage.
> >
> > I've got a feeling that requirement might've been added in later
> > versions of the datasheet...
>
> We encounter an issue that when Integer mode, the lambda=theta=0,
> the output sound is slower than expected. After change lambda=1
> the issue is gone.
>

Cool alright if there is a real issue here, then we should be
getting it fixed.

Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>

Thanks,
Charles