I use imx6q custom board's mac to connect a fpga board, which is used as the phy side, and use rgmii mode. I have configured fixed-link and set speed as 1000, now send and recv can work fine. But when I keep sending packet from imx6q to fpga board, sometimes package will lose. I think it may because the tx clock and txdata are too close, so I want to change tx clock phase by 90 degree, how can I do that, where in the code modify?
