SFP+ ref clock (program clock cleaner?)

Hi, 

I'm working with Arria 10 SoC dev kit and trying to use SFP+ ref clock.

I don't have any information on ref clock frequency on LMK_SFPCLK(P/N) that comes from clock cleaner (U26).

I need to have ref clock by like 322.265625 Mhz, so do I need to program U26 (clock cleaner)??

Where I can find the software to do so?

Another question is what is the default frequency running on LMK_SFPCLK ?

Thanks