Hi,
I hope you are doing well.
Please accept my apologies for the delay in response.
LAN7430 will be supported by IMX6Q as long as the logic level matches and the PCIe specifications match with the iMX6Q. Unfortunately, there is no schematic reference available.
The driver is already present in Linux BSP. One can enable the same with the help of enabling with the help of CONFIG_LAN743X Linux kernel configuration
Thanks & Regards,
Ritesh M Patel