Re: [alsa-devel] [PATCH 06/19] ASoC: rsnd: add .set_sysclk on snd_soc_dai_ops

Hi Mark

...

This patch adds struct snd_soc_dai_ops :: set_sysclk. But, it do nothing, since rsnd sysclk is controlled by ADG. Without this patch, simple-card init will be failed if DT case.

We should fix the simple-card code so that it does not need this rather than adding empty functions to all the drivers - I'd expect it to handle -ENOTSUPP as not an error.

Ahh...

Current simple-card will get sysclk absolutely in normal (?) way. Can you see end of asoc_simple_card_sub_parse_of() ?

rsnd got sysclk from it, but it is "module" clock, not "sysclk".

I guess I can avoid this issue if dtsi has

system-clock-frequency = 0;

but it is strange.