Wedge100 device kernel to 4.18 missed eth0

[simon-fan]

I have a Wedge100 board, I want to change the kernel to 4.18.
it is my configure:
KERNEL_DEVICETREE = "aspeed-bmc-facebook-wedge100.dtb"
PREFERRED_VERSION_linux-aspeed = "4.18.16"
PREFERRED_VERSION_libwatchdog = "0.2"

It can executes to login, though many warnings and error.
My concerns is device missed eth0.
kernel we are sure:
CONFIG_NET_VENDOR_FARADAY=y
CONFIG_FTGMAC100=y

What configure do I msiss?

Thanks.
Simon Fan

[simon-fan]

If I modify aspeed-bmc-facebook-wedge100.dts
field: mac1: status --> from "disabled" to "okay"

eth0 can appear.
But cannot send and receive packet!
tx/rx counters are zero.

Please help solve this!