Nobody has this problem?

Does anybody know how to force the HDMI-IN to NV12?

with this command I can force 422 but not 420

v4l2-ctl --get-edid > edid.txt
v4l2-ctl --set-edid file=edid.txt,format=hex,ycbcr422

any ideas?

Sorry, I have found it "rk3588-nanopi6-rev01.dts".
Didn't think that for me the newere board has rev01.dts

Is there a complete device tree for T6, the last which I found in git is for R6C?