imx6ull MCIMX6Y7DVM09AB chip ethernet not work

[chenfeng2016]

Hello, about imx6ull, I have a question about Ethernet  need your help

In our project, when using imx6ull MCIMX6Y2CVM08AB chip, the ethernet  network can work normally.  you can see eth0 and eth1, by  ifconf -a ,but  the same hardware is replaced with imx6ull chip to MCIMX6Y7DVM09AB, the Ethernet network does not work, and eth0 or eth1 cannot be seen by  ifconfig -a 

Help to analyze the causes, thanks

 MCIMX6Y2CVM08AB and MCIMX6Y7DVM09AB boot log attached.

[Rita_Wang]

The two chip have some difference,the MCIMX6Y7DVM09AB only support one Ethernet, and the MCIMX6Y2CVM08AB  support Ethernet x2.