You can try this 5.15.0 kernel that I’m running right now. Just sudo dpkg -i linux-image-5.15.0_5.15.0-1_riscv64.deb and sudo dpkg -i linux-headers-5.15.0_5.15.0-1_riscv64.deb.
https://www.w6rz.net/linux-image-5.15.0_5.15.0-1_riscv64.deb
https://www.w6rz.net/linux-headers-5.15.0_5.15.0-1_riscv64.deb