Allwinner A64 DE2 Bus Driver

modulename: sun50i-de2.ko

configname: CONFIG_SUN50I_DE2_BUS

Linux Kernel Configuration
└─>Device Drivers
└─>Bus devices
└─>Allwinner A64 DE2 Bus Driver
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Say y here to enable support for Allwinner A64 DE2 bus driver. It's
mostly transparent, but a SRAM region needs to be claimed in the SRAM
controller to make the all blocks in the DE2 part accessible.

source code: