OpenWRT on banana pi
OpenWRT have support many allwinner chip . so easy to use it on banana pi
Allwinner Sun4i/5i/6i/7i/9i (sunxi) Various vendors are offering development boards / single-board computer based on the Allwinner SoCs. These are running various flavors of the A1x, A20, A31, and soon H3 SoCs, with different buildouts. The mach is called "sunxi".
For some specs rather see Allwinner_Technology#A-Series.
more please see: