Does it have crng? If so, how to make it work? I use Linux kernel from RVCK Project (or should I use another one?).
Yes, at least on Fedora 44, it supports it out of the box.
Aug 13 00:00:01 localhost kernel: random: crng init done
Here is a dmesg fragment from my RV2 (spacemit k1-based):
[ 2.828865] ky_hwcrng f0703800.crng: registered RNG driver
[ 2.829963] random: crng init done
Is there something similar to the first line?