For HC1 and HC2 we provide specially optimized config which has to be applied manually. This results in shorter boot time and lower consumption. Edit /boot/armbianEnv.txt and add:
board_name=xu4 # or xu3, xu3, hc1
Overlay management via armbian-config is not supported. You need to edit /boot/boot.ini and add overlays manually. Look for a line:
setenv overlays "i2c0 i2c1 hktft-cs-ogst"
Here you add what you need. More you can find in /boot/dtb/ or /boot/dtb/overlays
Make sure to adjust path in
ext4load mmc 0:1 0x60000000 /boot/dtb/overlays/${overlay}.dtbo
accordingly.