Hello Karsten,
thank you for all your informations about A20 specifications. I will
test them ASAP ! I guessI will spend time on uboot...
However, I have a new information about Jessie on my A20-Olinuxino
Micro. Yesterday night, I installed Jessie on my board using my
USB-Ethernet interface. Two informations.
I first used a 128M micro SD, with no speed indication. The (small) size
would have been enought for the installer but I could not boot the
installer, probably because the card is too slow. I attempted another
install with a Class10 8G Micro SD and then it ran fine. I don't know if
it is really a bug.
Second and more important regarding #864562 : after reboot, the board
network interface is still unable to connect to the switch. This means
that the issue is probably in the kernel, even in Jessie kernel.
Hope it helps
Regards
Jean-Louis