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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: "Lu, Brent" <brent.lu@intel.com>,
	"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Cc: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>,
	"Rojewski, Cezary" <cezary.rojewski@intel.com>,
	Kai Vehmanen <kai.vehmanen@linux.intel.com>,
	Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
	Jie Yang <yang.jie@linux.intel.com>,
	Takashi Iwai <tiwai@suse.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Liam Girdwood <liam.r.girdwood@linux.intel.com>,
	Sam McNally <sammc@chromium.org>, Mark Brown <broonie@kernel.org>,
	Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
	Daniel Stuart <daniel.stuart14@gmail.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Yu-Hsuan Hsu <yuhsuan@chromium.org>,
	Damian van Soelen <dj.vsoelen@gmail.com>
Subject: Re: [PATCH 2/2] ASoC: Intel: Add period size constraint on strago board
Date: Thu, 30 Jul 2020 10:27:58 -0500	[thread overview]
Message-ID: <f1386a05-8866-9251-c751-21c9109aa35f@linux.intel.com> (raw)
In-Reply-To: <DM6PR11MB36421D9A808D401416B72D2D97710@DM6PR11MB3642.namprd11.prod.outlook.com>



>> Is this patch required if you've already constrained the period sizes for the
>> platform driver in patch1?
> 
> Yes or alsa will select 320 as default period size for it.

ok, then that's a miss in your patch1. 320 samples is a multiple of 1ms 
for 48kHz rates. I think it was valid only for the 16kHz VoIP paths used 
in some versions of Android, but that we don't support in the upstream code.

To build on Takashi's answer, the real ask here is to require that the 
period be a multiple of 1ms, because that's the fundamental 
design/limitation of firmware. It doesn't matter if it's 48, 96, 192, 
240, 480, 960 samples.

  reply	other threads:[~2020-07-30 15:28 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-29 11:03 [PATCH 0/2] Add period size constraint for Atom Chromebook Brent Lu
2020-07-29 11:03 ` [PATCH 1/2] ASoC: intel: atom: Add period size constraint Brent Lu
2020-07-29 11:19   ` Andy Shevchenko
2020-07-29 11:03 ` [PATCH 2/2] ASoC: Intel: Add period size constraint on strago board Brent Lu
2020-07-29 14:08   ` Pierre-Louis Bossart
2020-07-30  8:02     ` Lu, Brent
2020-07-30 15:27       ` Pierre-Louis Bossart [this message]
2020-07-30 15:44         ` Pierre-Louis Bossart
2020-07-30 16:17           ` Lu, Brent
2020-07-30 16:56         ` Takashi Iwai
2020-07-31 12:28           ` Lu, Brent
2020-07-29 11:20 ` [PATCH 0/2] Add period size constraint for Atom Chromebook Andy Shevchenko
2020-07-31 12:26 ` [PATCH v3 " Brent Lu
2020-07-31 12:26   ` [PATCH v3 1/2] ASoC: intel: atom: Add period size constraint Brent Lu
2020-07-31 12:26   ` [PATCH v3 2/2] ASoC: Intel: Add period size constraint on strago board Brent Lu
2020-07-31 13:34     ` Takashi Iwai
2020-08-01  8:58       ` Lu, Brent
2020-08-01  9:26         ` Takashi Iwai
2020-08-03 13:00           ` Lu, Brent
2020-08-03 15:13             ` Pierre-Louis Bossart
2020-08-03 16:45               ` Lu, Brent
2020-08-03 16:56                 ` Takashi Iwai
2020-08-04  4:33                   ` Lu, Brent
2020-08-04 14:24                     ` Pierre-Louis Bossart
2020-08-06 16:41                       ` Lu, Brent
2020-08-10 15:03                         ` Pierre-Louis Bossart
2020-08-10 17:38                           ` Yu-Hsuan Hsu
2020-08-11  2:16                             ` Lu, Brent
2020-08-11  2:29                               ` Yu-Hsuan Hsu
2020-08-11  7:43                                 ` Takashi Iwai
2020-08-11  8:25                                   ` Yu-Hsuan Hsu
2020-08-11  8:39                                     ` Takashi Iwai
2020-08-11  9:35                                       ` Yu-Hsuan Hsu
2020-08-11 14:53                                         ` Mark Brown
2020-08-11 16:54                                           ` Pierre-Louis Bossart
2020-08-11 17:22                                             ` Mark Brown
2020-08-12  3:09                                               ` Yu-Hsuan Hsu
2020-08-12  6:13                                                 ` Takashi Iwai
2020-08-12  6:53                                                   ` Yu-Hsuan Hsu
2020-08-12  6:58                                                     ` Takashi Iwai
2020-08-12  7:43                                                       ` Yu-Hsuan Hsu
2020-08-12  7:47                                                         ` Takashi Iwai
2020-08-12 14:46                                                           ` Pierre-Louis Bossart
2020-08-12 14:55                                                             ` Takashi Iwai
2020-08-12 15:54                                                               ` Pierre-Louis Bossart
2020-08-12 16:08                                                                 ` Lu, Brent
2020-08-12 16:38                                                                   ` Pierre-Louis Bossart
2020-08-13  6:24                                                                     ` Yu-Hsuan Hsu
2020-08-13  7:55                                                                       ` Lu, Brent
2020-08-13  8:36                                                                         ` Yu-Hsuan Hsu
2020-08-13  8:45                                                                           ` Takashi Iwai
2020-08-13 12:57                                                                             ` Pierre-Louis Bossart
2020-08-13 17:15                                                                               ` Yu-Hsuan Hsu
2020-08-21 16:40   ` [PATCH v3 0/2] Add period size constraint for Atom Chromebook Mark Brown

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