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

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Message-ID: <DM6PR11MB3642B5BC2E1E0708088526D8974D0@DM6PR11MB3642.namprd11.prod.outlook.com>
Date:   Mon, 3 Aug 2020 13:00:31 +0000
From:   "Lu, Brent" <brent.lu@...el.com>
To:     Takashi Iwai <tiwai@...e.de>
CC:     "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "Guennadi Liakhovetski" <guennadi.liakhovetski@...ux.intel.com>,
        "Rojewski, Cezary" <cezary.rojewski@...el.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Takashi Iwai <tiwai@...e.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.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>,
        Yu-Hsuan Hsu <yuhsuan@...omium.org>,
        Daniel Stuart <daniel.stuart14@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Damian van Soelen <dj.vsoelen@...il.com>
Subject: RE: [PATCH v3 2/2] ASoC: Intel: Add period size constraint on strago
 board

> > >
> > > Again, is this fixed 240 is a must?  Or is this also an alignment issue?
> > Hi Takashi,
> >
> > I think it's a must for Chromebooks. Google found this value works
> > best with their CRAS server running on their BSW products. They
> > offered this patch for their own Chromebooks.
> 
> Hrm, but it's likely a worse choice on other sound backends.
> 
> Please double-check whether this fixed small period is a must, or it's an
> alignment issue.
Hi Takashi,

I've double checked with google. It's a must for Chromebooks due to low
latency use case.


Regards,
Brent

> 
> 
> Takashi