Re: [PATCH] SoC: simple-card-utils: set 0Hz to sysclk when shutdown

Hi Katsuhiro > >> Bad scenario as follows (mclk-fs = 256): > >> - Initialize sysclk by correct value (Ex. 12.288MHz) > >> - Codec set constraints of PCM rate by sysclk > >> 48kHz (1/256), 32kHz (1/384), 24kHz (1/512) > >> - Play 48kHz sound, it's acceptable > >> -

Re: [PATCH] SoC: simple-card-utils: set 0Hz to sysclk when shutdown

On 2019/09/09 9:31, Kuninori Morimoto wrote: Hi Katsuhiro This patch set 0Hz to sysclk when shutdown the card. Some codecs set rate constraints that derives from sysclk. This mechanism works correctly if machine drivers give fixed frequency. But simple-audio and audio-graph card set

Re: [PATCH] SoC: simple-card-utils: set 0Hz to sysclk when shutdown

Hi Katsuhiro > This patch set 0Hz to sysclk when shutdown the card. > > Some codecs set rate constraints that derives from sysclk. This > mechanism works correctly if machine drivers give fixed frequency. > > But simple-audio and audio-graph card set variable clock rate if > 'mclk-fs'

[PATCH] SoC: simple-card-utils: set 0Hz to sysclk when shutdown

This patch set 0Hz to sysclk when shutdown the card. Some codecs set rate constraints that derives from sysclk. This mechanism works correctly if machine drivers give fixed frequency. But simple-audio and audio-graph card set variable clock rate if 'mclk-fs' property exists. In this case, rate