RPI-CM4-IO+Radxa CM3

Image radxa-cm3-io-debian-bullseye-xfce4-arm64-20221101-0302 working.
I need set UART2 as normal console. I tryied change overlays in extlinux.conf
fdtoverlays /dtbs/4.19.193-58-rockchip-gbac1feba87f0/rockchip/overlay/rk3568-uart2-m0.dtbo
No result.
Is not needed rk3566-uart2-m0.dtbo because of RK3566 processor on Rock CM3?
Another solution?
Thanks in advance.

Our image kernel 5.10 uses rsetup to configure hardware, you can refer to https://wiki.radxa.com/Rockpi4/hardware/devtree_overlays_linux5.10

Thank you for idea. How do you switch the kernel? I am testing grub about one day without success.