linux-kernel - RE: [PATCH v3 2/2] ASoC: Intel: Add period size constraint on strago board

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Date:   Mon, 3 Aug 2020 16:45:29 +0000
From:   "Lu, Brent" <brent.lu@...el.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Takashi Iwai <tiwai@...e.de>
CC:     Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "Kuninori Morimoto" <kuninori.morimoto.gx@...esas.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        "Rojewski, Cezary" <cezary.rojewski@...el.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        "Sam McNally" <sammc@...omium.org>,
        Mark Brown <broonie@...nel.org>,
        "Ranjani Sridharan" <ranjani.sridharan@...ux.intel.com>,
        Daniel Stuart <daniel.stuart14@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Yu-Hsuan Hsu <yuhsuan@...omium.org>,
        Damian van Soelen <dj.vsoelen@...il.com>,
        "yuhsuan@...gle.com" <yuhsuan@...gle.com>
Subject: RE: [PATCH v3 2/2] ASoC: Intel: Add period size constraint on strago
 board

> > Hi Takashi,
> >
> > I've double checked with google. It's a must for Chromebooks due to
> > low latency use case.
> 
> I wonder if there's a misunderstanding here?
> 
> I believe Takashi's question was "is this a must to ONLY accept 240 samples
> for the period size", there was no pushback on the value itself.
> Are those boards broken with e.g. 960 samples?

I've added google people to discuss directly.

Hi Yuhsuan,
Would you explain why CRAS needs to use such short period size? Thanks.


Regards,
Brent