Hello all!

I have a custom board that has been based on the at91sam9g20ek using the Micrel KS8721BL PHY in MII mode. In u-boot ethernet is working fine.
But after linux boots the ethernet doesn't work. In ifconfig command RX and TX bytes counter are increments, but i have no ping requests and can`t establish any connections.
As I'm using a mii interface the is_rmii = 1 is changed to is_rmii = 0 in board file.

Thanks for any help anyone can give us.
Anton

Review the board configuration file, paying particular attention to the GPIO/PIN assignments, and which ones you've changed compared to the real 9G20-EK board. Particularly the MMC interface pins.

Thanks!

Problem is fixed! In board configuration file pins PA23 and PA24 were assigned to ethernet and to I2C interface. I remove I2C on free pins and now ethernet is working!