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Mac to Mac communication over SGMII

Question asked by Sedat Altun on Feb 19, 2020
Latest reply on Feb 24, 2020 by Sedat Altun

Hi Community,

We are using 2 T4240 SoC based custom boards. We are trying to connect the 2 macs over sgmii connection.

We connected SGMII pins TX of one MAC to RX of other mac and visa versa.

And we configured both macs as fixed-link as below, no mdio configuration.

   fm1mac2: ethernet@e2000 {
                phy-connection-type = "sgmii";
                fixed-link = <2 1 1000 0 0>;


After connect them we gave ip address to both interface and sent packets with ping. But there is no frame reception form any side. We looked with ethtool and both interfaces are up.

Any help will be appreciated.