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ls1020a RGMII interface not working

Question asked by Serge Frolov on Apr 14, 2019
Latest reply on Apr 16, 2019 by ufedor

Hi, I am using ls1020a with two ksz9031rnxi PHYs connecting to EC1, EC2 in RGMII mode.  The input 125 MGz clock is present on EC1_GTX_CLK125 and on EC2_GTX_CLK125. I checked by scope, that there is no transmission clocks on EC1_GTX_CLK and EC2_GTX_CLK. The friquency on this pins is about 900 kGz. MDIO is working and present link status of the PHYs in linux. I think, that eTSEC takes the input 125 MGz from EC3_GTX_CLK125 for all EC. Can you help me to configure interfaces in u_boot and dts?