Just discovered these cool resources:
We can test builds if needed.
Bump.
Just found Khadas’ repos with lots stuff for Amlogic S905X, S912, S905X3, S905D3, S922X, A311D, A311D2, Rockchip RK3399, RK3588 and more:
https://github.com/orgs/khadas/repositories
Hope that inspires !
Bump.
New AML devices trees:
https://github.com/LineageOS/android_device_amlogic_common/
https://github.com/LineageOS/android_device_amlogic_gx-common
Kernel:
https://github.com/LineageOS/android_kernel_amlogic_linux-4.9
Vendor:
https://github.com/search?q=android+amlogic+vendor&type=repositories&s=updated
Currently trying to set-up a Banana Pi M5 with LineageOS, as this device is now official.
Waiting for a add-on touch screen as LineageOS Recovery doesn’t work with keyboard, that was unexpected 
Once installed and running, I’ll try to rebuild LOS then /e/ OS. This is the way , but it’s a long way and probably full of pitfalls…
Note : official LOS is 20, aka Android 13/T. Unofficial XDA thread: https://forum.xda-developers.com/t/official-unofficial-lineageos-20-for-amlogic-gxl-gxm-g12-sm1-ne-family-devices.4534935/
Banana Pi M5 first boot with eOS 
(top right is HDMI output, center background is scrcpy).
Lot of things are still to figure out… Will create a thread once usable!
I’m quite confident, home-made LOS 20 is running fine 
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Cool !
Can you build “generic” image for S912 boxes too ?
(if possible, as LE does, by exploiting gxm_q20* dtbs)
We’ll glad to test it on our boxes.
Could you please elaborate a bit? 
*Elec (Libre, Core, etc.) uses dtb - aka config - files for various boards supported.
The question is if, in your opinion, it’s possible to do the same with LOS/e.
Hope it’s more clear now.
Not sure, at all…
Unlike mainline Linux distro, I’ve always seen Android builds being device-specific (not talking about GSI here).
- LibreElec has a specific image for M5: https://libreelec.tv/downloads/amlogic/ (I never could get it to boot !)
- CoreElec is lying on an existing Android: https://wiki.coreelec.org/coreelec:bpi
- even Armbian has device-specific builds: https://www.armbian.com/bananapi-m5/
As I could read on XDA thread for LOS20, most device have specific implementations.
Sorry, but, although maybe buildable, I don’t think that a generic image will boot on any device!