thank you for your questions. I use at the moment a JSK to test purposes.
As I understand the whole thing would have to at TVE, depending on the mode, the corresponding signal to the VGA connector to be tapped. The TV_OUT_MODE-5 (Y / C and CVBS) I would prefer since then would have to the VGA connector on Green Y, Red in C, and CVBS blue bear.
The only question is: How do I get back with the Yocto?
What startup parameters I have to give to the U-BOOT?
Do I need to adjust something in the kernel?
With VGA, the thing runs flawlessly ...
Thank you for your support.