CommentStreams:Dfd8d00df295e1f0a6de051ef4f2c29a
Issue solved. On Raspberry Pi 5 with Media controller API 6.6.62, the C779 MIPI CSI-2-TX must be connected on the CAM/DISP 1 port as specified from the device tree. Afterwards, a proper EDID file must be loaded on the properly created subdev to be visible by the HDMI-TX source. Example:
v4l2-ctl -d /dev/v4l-subdev2 --set-edid=file=edid.txt --fix-edid-checksums