Created attachment 223826 [details]
.diff file for new port submission
RockPi E is a RK3328-based SBC with dual Ethernet.
Original work was done by Sergey (https://reviews.freebsd.org/p/s199p.wa1k9r_gmail.com/).
Please submit the diff to u-boot upstream first.
Created attachment 223974 [details]
u-boot-rock-pi-e is upstream in u-boot so I have simplified the diff as attached and will contact upstream to get other fixes put in there.
I hope this is suitable to add as port for now.