Get armbian working on my h96 pro plus tv box (green pcb ver)

Hardware Specs:

• soc: amlogic s912
• memory: 3gb ddr4
• ethernet: RTL8211F
• wifi: Fn-link 8223A-SR (QCA9377)

Fix Wifi/Bluetooth/HDMI Audio:

With meson-gxm-q200.dtb included in armbian we can boot armbian just ok but there is no wifi/bluetooth/hdmi audio, so I created meson-gxm-q200-mod.dtb that fixes these problems.
Source code can be found in amlogic_dts/, run build.sh to build dtb file. The actual modification can be viewed in amlogic_dts/h96_pro_plus.patch.
Also we need some firmware that exists in mainline linux firmware repo but ignored by armbian build system. copy lib-firmware/* to <ARMBIAN_ROOT>/lib/firmware/.

Known Problems:

Hardware acceleration can be enabled via Panfrost, but the perfomance is far from usable (slow, and crashes randomly). Hardware video decoding is available if firmware in lib-firmware/meson/vdec are present, but playback is not satisfying due to poor opengl support.

Convert EMMC Root Filesystem From Ext4 to Btrfs

• Boot to usb drive or sd card with armbian installed
• Convert root filesystem
  • # btrfs-convert /dev/mmcblk1p2
• Mount emmc boot and root
  • # mkdir /tmp/boot
  • # mount /dev/mmcblk1p1 /tmp/boot
  • # mkdir /tmp/root
  • # mount /dev/mmcblk1p2 /tmp/root
• open /tmp/boot/extlinux/extlinux.conf in vim/nano and remove data=writeback from rootflags. After Editing the file should look like this:

LABEL Armbian
LINUX /zImage
INITRD /uInitrd
FDT /dtb/amlogic/meson-gxm-q200-mod.dtb
APPEND root=LABEL=ROOT_EMMC rootflags=rw console=ttyAML0,115200n8 console=tty0 no_console_suspend consoleblank=0 fsck.fix=yes fsck.repair=yes net.ifnames=0

• open /tmp/root/etc/fstab in vim/nano and modify root filesystem type. After Editing the file should look like this:

#/var/swap none swap sw 0 0
#/dev/root      /               auto            noatime,errors=remount-ro       0 1
#proc           /proc           proc            defaults                                0 0
#/dev/root      /               ext4            defaults,noatime,errors=remount-ro      0 1
/dev/root      /               btrfs            rw,relatime,compress=zstd,space_cache   0 1
tmpfs           /tmp            tmpfs           defaults,nosuid                         0 0
LABEL=BOOT_EMMC /boot           vfat            defaults                                0 2