How to ensure the value of master clock?
sudo grep aud_mclk /sys/kernel/debug/clk/clk_summary
While decompiling DTB with command
sudo dtc -I fs -O dts -o extracted_proc.dts /proc/device-tree
shows dts with correct value : nvidia,mclk-rate=<0xbb8000>;
that exactly what I need - 12.288MHz
But I suspect that master clock is not 12.288, 'cos when I use external generator with 12.288 I have correct signal from mics, and when I use Jetson internal master clock I get poor signal from mics