[alsa-devel] Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

Mark Brown broonie at opensource.wolfsonmicro.com
Fri Aug 10 13:31:09 CEST 2012

On Fri, Aug 10, 2012 at 07:00:05PM +0800, Dong Aisheng wrote:

> Since sgtl5000 on slave mode, the mclk can only be 256*fs, 384*fs, 512*fs,
> the maximum mclk of 8Khz 4096000(512 * 8000) < 8Mhz, it does not meet
> the minimum clock requirement of mclk.
> It looks like hw limitation on slave mode.

> Will spend some time double check if any solution for this later.
> If anyone else know it, please share the comments.

The CODEC driver ought to be setting a constraint for this if there's no
way it can support 8kHz in slave mode.

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