From: Nicolin Chen <nicoleotsuka@gmail.com>
To: Alexander Shiyan <shc_work@mail.ru>
Cc: alsa-devel@alsa-project.org, Liam Girdwood <lgirdwood@gmail.com>,
Xiubo Li <Xiubo.Lee@gmail.com>, Timur Tabi <timur@tabi.org>,
Takashi Iwai <tiwai@suse.com>, Mark Brown <broonie@kernel.org>,
Fabio Estevam <fabio.estevam@nxp.com>
Subject: Re: [PATCH 2/2] ASoC: fsl_ssi: Fix number of words per frame for I2S-slave mode
Date: Wed, 29 Jun 2016 13:56:57 -0700 [thread overview]
Message-ID: <20160629205656.GA31609@Asurada-Nvidia> (raw)
In-Reply-To: <1467226224.156244316@f360.i.mail.ru>
On Wed, Jun 29, 2016 at 09:50:24PM +0300, Alexander Shiyan wrote:
> >Среда, 29 июня 2016, 21:26 +03:00 от Nicolin Chen <nicoleotsuka@gmail.com>:
> >
> >On Wed, Jun 29, 2016 at 10:52:01AM +0300, Alexander Shiyan wrote:
> >
> >> >your failed case. Could you please tell me what were the FSclk,
> >> >BITclk and size of your case?
> >
> >> Here is my oscillograms with/without patch:
> >> Bclk=12 MHz, sound is just a "cat /dev/urandom > /dev/dsp", i.e. FS=8 KHz, MONO.
> >> Upper (yellow) line is TXDATA, Lower (blue) is FS.
> >>
> >> Measurement without patch: https://cloud.mail.ru/public/Rcsv/xr88V5Sa1
> >> Measurement with patch: https://cloud.mail.ru/public/NCwn/DQnzioQEL
> >
> >Thanks for the reply. So in the case without patch, it looks like
> >SSI just sent the data ignoring the slot size right?
>
> I could be wrong, but think that WL (word length) still point to number of valid
> data bits within 32bit chunk (as defined for I2S-Master mode),
> but since DC=0, this cause to send next word to the channel again and again.
I see. Thanks for the fix.
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next prev parent reply other threads:[~2016-06-29 20:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-25 4:59 [PATCH 2/2] ASoC: fsl_ssi: Fix number of words per frame for I2S-slave mode Alexander Shiyan
2016-06-28 18:20 ` Nicolin Chen
[not found] ` <1467143972.433375523@f318.i.mail.ru>
2016-06-28 22:06 ` Nicolin Chen
2016-06-29 7:52 ` Alexander Shiyan
2016-06-29 18:26 ` Nicolin Chen
[not found] ` <1467226224.156244316@f360.i.mail.ru>
2016-06-29 20:56 ` Nicolin Chen [this message]
2016-06-28 22:02 ` Nicolin Chen
2016-06-29 18:20 ` Applied "ASoC: fsl_ssi: Fix number of words per frame for I2S-slave mode" to the asoc tree Mark Brown
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