Support for Sipped LicheeRV Nano

Hardware Questions and Recommendations
1

Hello. I want to ask about support for this board: https://wiki.sipeed.com/hardware/en/lichee/RV_Nano/1_intro.html

It has version with WiFi+BLE, Ethernet and WiFi+BLE+Ethernet. And it's crazy small and relatively cheap.

It could be used as travel router (Ethernet->WiFi AP), (WiFi client -> Ethernet).

It also supports USB-OTG so we theoretically could add one more network interface through USB and connect it to the laptop as usb network card (add ethernet to the laptop with USB).

Device has 256Mb of RAM and 1Ghz RISC-V or ARM A53 core (switchable by pins on the board). And some built-in MCU cores and video encoders. Boots from SD card.

Seems as t has buildroot and Debian Linux support, but through patched kernel. Patches are not mainlined.

Could be interesting to have OpenWRT on it. Because Debian is heavy for 256Mb device with low-power CPU. OpenWRT could support only one type of cores RISC or ARM.

2
3

Chances for wireless support would be minimal, at best.

4

From what I see wifi chip is AIC8800D which is the same as in Radxa Zero 3W. Armbian has it working on the latest kernel.

5

…and its mainline status is below zero.

6

Got device, spent some time on soldering (0201 soldering by hand is awful). It works more-or-less fine on debian, but official image is really strange.

They have DT files and configs here: https://github.com/scpcom/sophgo-sg200x-debian but seems as it's heavy patched 5.10 kernel.