fec_nic_drv no packet ever send on imx8mm

[Christian Helmuth]

Hello Jean-Adrien,

I have no device-specific hints, just some general tips/questions.

- Your board seems to use a different PHY from imx8q_evk. Is this
  correct?

- The driver logs the link is up in full-duplex 1Gbps.
  Does your switch confirm this with its LED state?

- I spotted some messages about fec_enet_rx_queue in the log.
  Does your driver receive any packets from the wire yet?
  If yes, is the content of the packets reasonable (you could just log
  some bytes into the packet while sending ARP requests from your
  host)?

- What happens if you unplug/plug the ethernet cable at runtime?

- Did you check that a minimal Linux with your configuration is able
  to drive the FEC?

Regards
-- 
Christian Helmuth
Genode Labs

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