I use a Radxa Rock5 model B with a RK3588.
Started to test it in december 2022 with default image, and then ARMbian image with Arch Linux ARM (ALARM) chrooted to add functionnalities
Since few days my board is mainlined, so the next step will be to boot natively on ALARM. I will probably need to chroot the opposite way, as riscv64-gcc is missing on ALARM.
I compiled crossbuild binutils and older riscv64-gcc crosscompiler on ARMv7h few month ago (see the ../ArchLinuxARM/ dir), but at this time (2023 01 15 didn't managed to have them for aarch64 on ALARM, they are avaiable on Debian and Ubuntu). I more and more dislike Ubuntu due to greater usage of snapd, and goes far away from it as most as possible.

See the current boot sequence on ARMbian 22.12 ubuntu+gnome version: https://asciinema.org/a/551846
* Don't use XFCE version on recent board, (rev 1.42) you will not be able to have HDMI output).
* Default boot on Ubuntu 22.04 GNOME version (kernel 5.10.110 blob) doesn't have HDMI output either, need to downgroad on 5.10.72.

casts/ subdirectory contains some ASCIInema screencast of boot sequences and other various configuration process.