[PATCH 2/2] ASoC: Intel: Add period size constraint on strago board

Pierre-Louis Bossart pierre-louis.bossart at linux.intel.com
Thu Jul 30 17:44:47 CEST 2020



On 7/30/20 10:27 AM, Pierre-Louis Bossart wrote:
> 
> 
>>> 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 

typo: is NOT

> 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.


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