Hello Morimoto-san,
Do you have any plans on adding support for multiple mclk-fs values
in simple-card?
Usually one constant mclk-fs value is not enough because usually codecs
have different value depending on rate.
For example, for wm8524 [1] one can use
mclk-fs = 256 for rates between 8kHz and 96kHz
but it needs to change mclk-fs = 128 for 176.4hHz
and 192kHz.
I am thinking of something like this:
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -44,6 +44,8 @@
compatible = "simple-audio-card";
simple-audio-card,name = "wm8524-audio";
simple-audio-card,format = "i2s";
+ simple-audio-card,lrclk-fs = <8000>, <32000>, <44100>
<48000>, <96000>, <176400>, <192000>;
+ simple-audio-card,mclk-fs = <256>, <256>, <256>,
<256>, <256>, <128>, <128>;
Let me know if this would be a good direction and I will send a patch.
thanks,
Daniel.
[1] https://www.cirrus.com/products/wm8524/
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