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From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: Shengjiu Wang <shengjiu.wang@gmail.com>
Cc: Mark Brown <broonie@kernel.org>, <kstewart@linuxfoundation.org>,
	<guennadi.liakhovetski@linux.intel.com>,
	Linux-ALSA <alsa-devel@alsa-project.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	<gregkh@linuxfoundation.org>,
	Shengjiu Wang <shengjiu.wang@nxp.com>,
	Takashi Iwai <tiwai@suse.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	<patches@opensource.cirrus.com>, <tglx@linutronix.de>,
	<allison@lohutok.net>
Subject: Re: [alsa-devel] [PATCH] ASoC: wm8962: fix lambda value
Date: Fri, 13 Dec 2019 10:56:58 +0000	[thread overview]
Message-ID: <20191213105658.GE10451@ediswmail.ad.cirrus.com> (raw)
In-Reply-To: <CAA+D8AP4XNNmQ72xG6gNevtu8i8TJ7AaQMMgXJMCPmv2VO0_HA@mail.gmail.com>

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@kernel.org> 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@opensource.cirrus.com>

Thanks,
Charles

  reply	other threads:[~2019-12-13 10:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-11 11:57 Shengjiu Wang
2019-12-12 16:48 ` Charles Keepax
2019-12-12 16:53   ` Mark Brown
2019-12-13  3:09     ` [alsa-devel] " Shengjiu Wang
2019-12-13 10:56       ` Charles Keepax [this message]
2019-12-13 12:05       ` Fabio Estevam
2019-12-16 12:05 ` Applied "ASoC: wm8962: fix lambda value" to the asoc tree Mark Brown

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