Ver 20250303 for rk33xx and rk356x kernel 6.12.17
ust read the rk3588 status from collabora,
I have been testing LE with the main core for a long time (see the link for details https://github.com/LibreELEC/Libr…ment-2631095501 ).
LE with the main core starts and works, but for now there is a problem, the HDMI frequency synchronization out of the box does not work (perhaps this is a local problem of my monitor), I have not yet delved into the essence of the problem, LE with the 6.1 core on the 3588 is enough for me.
I can give you a link to test images with the main core for those who want to try, perhaps on their hardware or with additional settings on the command line, KODI will work fully.
Most of the codecs aren't upstream yet either.
the performance of the 3588 is so high that it does not require HW decoders for video playback up to 4K in the banal SW mode 
