I have a custom board that uses the AM3352 and has two Ethernet ports, one with sn SMSC LAN8720Ai phy and the other with a TI TLK106 phy. I believe I've modified the pinmux settings for RMII correctly.
After setting an IP address in U-Boot and performing a ping to a host I know is up, I'm not getting a response, but do get output indicating something is occurring:
U-Boot# setenv ipaddr 192.168.98.200
U-Boot# ping 192.168.98.14
entered cpsw_control line 649
link up on port 0, speed 100, full duplex
Using cpsw device
entered cpsw_control line 649
ping failed; host 192.168.98.14 is not alive
Can anyone suggest how to debug this? Hardware is brand new and untested apart from being able to boot u-Boot and the kernel. Wireshark indicates no outbound traffic from the board.