How ADI recommends to connect 2 Graphics port on the ADV7842.
My project needs to connect 2 graphics ports , 1 Component , 2 Composite video and 2 HDMI ports
If you take a look at the Analog Input Routing Recommendation in the Hardware guide it shows this:
RGB Graphics: AIN 1,2,3
Component: AIN 4,5,6
SCART RGB AIN 7,8,9
SCART CVBS AIN 10
CVBS AIN 11
YC AIN 10,12
So for you, just map the SCART RGB to your 2nd graphics, and the SCART CVBS to your 2nd composite. That would put you as close to the recommendations (and easier script usage) as possible I think.
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