Why is there a separate CLOCK_PORT and CLOCK_NET config parameters? What is the use case? Don't you always want STA and CTS to use the same clock?

I doesn't look like CLOCK_NET really does anything - perhaps it is a vestige?

Mohamed Shalan just explained to me. So if you had a clock multiplex with a few different sources and one output, it would allow you to define the multiple clock ports , but specify the output of the mux as the one to use for CTS

That's an interesting idea but I don't actually see anything in the code that does that