For anyone with this problem, the switch must be configured before bringing up eth0.

These commands are needed for everything to work:

swconfig dev switch0 set reset 1 swconfig dev switch0 set enable_vlan 0 swconfig dev switch0 set apply 1

Cheers!

@luz , my response was for @Peter-Hatina.

I'm sorry if was not clear.

I'm currently adding support for Omega2 in Yocto and I already managed to get the Linux kernel (4.9.37) compiled applying LEDE specific implementations and patches and rampis patches. But I haven't tested it yet.

And now I just realized that it seems that there is no u-boot source code available. Do you know anything about this?