https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers/linux
https://github.com/juliagoda/CH341SER/issues/18
https://wiki.banana-pi.org/Banana_Pi_BPI-R2
https://forum.openwrt.org/t/banana-pi-r2-emmc-installation/130531/8
https://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:storage
https://openwrt.org/toh/views/toh_packagedownload?dataflt%5BBrand*%7E%5D=sino
https://forum.banana-pi.org/t/bpi-r64-v1-1-openwrt-image-expansion/12996/5