For those who are seeking to enable video decode i've been able to get it working with those libs
https://www.elektroda.pl/rtvforum/topic4018092.html#20840047
download h618_hwdec.tar.gz and replace the libs and add "extraargs=cma=256M" to your /boot/armbianEnv.txt , mpv works flawlessly with --hwdec=drm --profile=fast, scrcpy is also fast and with minimal cpu usage...
i'm also using rolling edge kernel, and latest 25.2 mesa from source
libva-v4l2-request-HACK_HEVC.zip