Because i need a more recent kernel than 5.10 on my odroid m2, i tried armbian.
i searched for the nearest model and i manage to find Radxa Rock 5C (rocky 3588s2)
i flash emmc with Bleeding edge images with Armbian Linux v6.11/ Debian 12 (Bookworm)Minimal / IOT for the rock 5c
in /boot/armbianEnv.txt i changed just one line after installation :
fdtfile=rockchip/rk3588s-odroid-m2.dtb
and after a final apt upgrade i can run version 6.12.1-edge-rockchip-rk3588 of the kernel.
for now it seems fine to me.