ADV7511 register configuration

Hi ADI experts,

I have two questions on ADV7511 when I'm using it, please help to check and answer, thanks a lot.

1. how to config the register under 1080p 30Hz format? I only find 1080p 60Hz format in register configuratin file, like this:

2.ADV7511 use General Control packet register to avoid function registers partly updated, but register file doesn't point out how to identify different register configuration, so how does GCP know which register I'm configing?

waiting for your feedback, thanks.