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LS1021A-IOT gateway: eTSEC0/1 not working properly in SGMII mode

Question asked by Abhilash Abraham on Dec 9, 2015
Latest reply on Dec 11, 2015 by Abhilash Abraham

We were trying to use the LS1021A-IOT gateway(rev 1) reference board ethernet ports(SGMII). It works properly in uboot. But in linux it comes up but after a few ping it fails. On debugging we could observe that we are getting an error interrupt, IEVENT_BSY and then the board only receives packets and not processing or transmitting the reply.  As per reference manual, "Busy condition interrupt - Indicates that a frame was received and discarded due to a lack of buffers.". Can anyone guide us on why this could be happening and how to fix it.