I got a particularly tricky display, which requires overriding the EDID on Odroid N2 (this maybe more of a feature of meson-drm ff900000) but Armbian doesn't come compiled on it with the CONFIG_DRM_LOAD_EDID_FIRMWARE kernel config option. Seems that it would be a fairly harmless thing to enable on Amlogic/Odroid and possibly on all devices.