The purpose and design method of the clock signal (MCLK) of the camera module

I would like to ask what are these clock signals on AGX Xavier used for? It seems to be an optional signal from the camera module design guide to supplement the signal integrity.
I don’t quite understand, what are the functions of these clocks and how to design them? Thank you

It’s output to sensor as working clock. If your board don’t need it you can just ignore it.