Re: [alsa-devel] [PATCH 1/2] ASoC: ak4613: add use CTRL2::CKS = 00

16 Jun 2017


      Hi Mark
...
...
ak4613 CTRL2::CKS controls Speed Mode (Normal/Double/Quad) for Master
Mode. In default, Normal Mode uses 512fs, but in such case, requested
input clock for all mode will be same. Then, it might not be eble to
support correct output if input clock was not enough.
This patch uses 256fs, and reduse requested imput clock for Noral Mode.
...
snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);

snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);


/* CKS = 00 */
snd_soc_update_bits(codec, CTRL2, (CKS_MASK | DFS_MASK), ctrl2);

This looks board specific - shouldn't we be setting the speed mode based
on a combination of the sampling rate and the master clock for the
device?
I removed "FIXME" comments, but OK.
I will fixup this patch-set
Best regards
---
Kuninori Morimoto