I am trying to enable memory split on my board. I am using Armbian Stretch with mainline based kernel 4.19.y.
No matter what I do, after reboot I get:
root@bananapi:~# free -h
total used free shared buff/cache available
Mem: 996M 170M 613M 4.8M 212M 799M
Swap: 498M 0B 498M
I've already tried adding to armbianEnv.txt:
disp_mem_reserves=on
extraargs=cma=96M
After first boot I've already relinked /boot/script.bin to /boot/bin/bananapim1plus.bin and added fdtfile=sun7i-a20-bananapi-m1-plus.dtb to /boot/armbianEnv.txt in order to have wifi.
Additionally, when I tried to use Armbian Xenial with desktop legacy kernel 3.4.y, but it doesn't seem to be able to get wifi working, cause after I've added fdtfile=sun7i-a20-bananapi-m1-plus.dtb to /boot/armbianEnv.txt system stopped booting.
Does anyone know how to get memory split to work?
Thanks in advance