Hi!
Using the vanilla ARMBIAN image 23.02.2_Bananapim5_bullseye_current_6.1.11_minimal
Enabling the provided uartA and uartC dtbos fails.
Here is the output from the boot process, as captured via the Serial Debug interface:
238 bytes read in 3 ms (77.1 KiB/s)
Applying kernel provided DT overlay meson-uartA.dtbo
failed on fdt_overlay_apply(): FDT_ERR_NOTFOUND
238 bytes read in 3 ms (77.1 KiB/s)
Applying kernel provided DT overlay meson-uartC.dtbo
failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC
It seems that this image provides invalid dtbos, likely not properly built alongside the same kernel image.
I'm happy to help debug this as I have a system at the ready.