linux-kernel - Re: [PATCH v2 0/2] Add period size constraint for Atom Chromebook

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Message-ID: <s5h8sf1caer.wl-tiwai@suse.de>
Date:   Thu, 30 Jul 2020 17:03:40 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Brent Lu <brent.lu@...el.com>
Cc:     alsa-devel@...a-project.org,
        Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        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 v2 0/2] Add period size constraint for Atom Chromebook

On Thu, 30 Jul 2020 10:13:33 +0200,
Brent Lu wrote:
> 
> Two different constraints are implemented: one is in platform's CPU
> DAI to enforce period sizes which are already used in Android BSP. The
> other is in Atom Chromebook's machine driver to use 240 as period size.
> 
> Changes since v1:
> -Add comma at the end of media_period_size array declaration.

Is it a hardware restriction?  Unless it's a must for some hardware
issues, enforcing such a small period size is nothing but a drawback
for a system without CRAS.


thanks,

Takashi

> 
> Brent Lu (1):
>   ASoC: intel: atom: Add period size constraint
> 
> Yu-Hsuan Hsu (1):
>   ASoC: Intel: Add period size constraint on strago board
> 
>  sound/soc/intel/atom/sst-mfld-platform-pcm.c | 15 +++++++++++++++
>  sound/soc/intel/boards/cht_bsw_max98090_ti.c | 14 +++++++++++++-
>  sound/soc/intel/boards/cht_bsw_rt5645.c      | 14 +++++++++++++-
>  3 files changed, 41 insertions(+), 2 deletions(-)
> 
> -- 
> 2.7.4
>