p0rc0_r0ss0

Kernel config is one for all. In our world one per kernel family. With default config https://github.com/armbian/build/blob/master/config/kernel/linux-imx6-current.config it should work fine, right? But it's a bit too much for your use case ... I understand that. That diff you keep for yourself. We don't want to shrink down our default config.

We should also probably use layerfs ... but I just noticed AUFS is back in action https://github.com/sfjro/aufs5-linux/commits?author=sfjro

Add parameter
 
EXTRAWIFI="no"  

Thank you for swift reply. I figured out source of complication. It was data accidentally copied to sources/families/imx6.conf once I got rid of it everything went with flying colors.
I managed to boot system (!) with kernel v5 (!!) and Armbian loading screen (!!!) all of it is awesome
Right now I'm trying to build kernel for wandboard dl/q with no extra "fat" in it. For now I somehow trimmed USB keyboard support , I guess those TI OMAP platform files were not that useless after all. Strangely armbian-hardware-monitor.log shows all USB drivers load fine.
 
[ 1.692772] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.692797] ehci-pci: EHCI PCI platform driver [ 1.692863] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 1.692949] usbcore: registered new interface driver usb-storage [ 1.693037] usbcore: registered new interface driver usbserial_generic [ 1.693071] usbserial: USB Serial support registered for generic [ 1.693292] mousedev: PS/2 mouse device common for all mice [ 1.693534] i2c /dev entries driver [ 1.697027] device-mapper: uevent: version 1.0.3 [ 1.697419] device-mapper: ioctl: 4.43.0-ioctl (2020-10-01) initialised: dm-devel@redhat.com [ 1.698358] ledtrig-cpu: registered to indicate activity on CPUs [ 1.698927] hid: raw HID events driver (C) Jiri Kosina [ 1.699086] usbcore: registered new interface driver usbhid [ 1.699092] usbhid: USB HID core driver
As soon I figure out that kernel is working I'll upload all files to github.
 
  

Thank you for your help, I'll try not to waste your time unless I'm absolutely sure I can't resolve issue myself.