Re: [PATCH net] net: dsa: mv88e6xxx: Set correct interface mode for CPU/DSA ports

[Greg Ungerer]

Hi Andrew,

On 28/5/19 11:17 pm, Andrew Lunn wrote:

My hardware has the CPU port on 9, and it is SGMII. The existing working
devicetree setup I used is:

                        port@9 {
                                 reg = <9>;
                                 label = "cpu";
                                 ethernet = <&eth0>;
                                 fixed-link {
                                         speed = <1000>;
                                         full-duplex;
                                 };
                         };

Hi Greg

You might need to set the phy-mode to SGMII. I'm surprised you are
using SGMII, not 1000Base-X. Do you have a PHY connected?

No, no PHY connected. Direct Armada 380 to 6390 switch with SGMII.

Adding

  phy-mode = "sgmii";

to that port fixes it.

Thanks!
Greg