@eselarmI've been working on this for several days, and as far as I can tell, on Armbian 24.8.3, if the "simple test" for whether an overlay has installed is to see if it shows up in `/proc/device-tree` then they are not loading, whether they are added via the overlays= or user_overlays= lines in /boot/armbianEnv.txt. This is for exisitng .dbto files (like s0-ext-antenna, bs, bs@1.3ghz, sdio@10mhz, etc), ones I've copied from websites or forums, or self-created ones.
The ONLY way I've been able to successfully install an overlay is by decompiling rk3308-rock-pi-s.dtb, editing it, and recompiling it. Annoyingly, `apt upgrade` will revert that file, so being able to add overlays or user_overlays would be very helpful.
References:
https://docs.armbian.com/User-Guide_Armbian_overlays/
https://forum.radxa.com/t/usb-sound-card-on-type-c-connector/17627
https://source.android.com/docs/core/architecture/dto/syntax#reference