66AK2H14: We can't enable the four Gigabit Ethernet NetCP interfaces

Alessandro Finocchi

Part Number: 66AK2H14

On our custom board embedding a TI KeyStone II 66AK2H14, we would like to enable the last two NetCP Ethernet interfaces (netcp2 and 3).

We found some interesting settings in your Linux SDK documentation (please search netrx2 on software-dl.ti.com/.../NetCP.html) but hopelessly for the K2E devices.

Would you have a Linux device tree example for 66AK2H14 enabling the four Gigabit Ethernet NetCP interfaces?

Thank you in advance

over 2 years ago

0 Rajarajan Uthayakumar over 2 years ago

TI__Expert 4314 points

Hi Alessandro,

Following are device tree bindings for K2H,

The mode of operation can be decided through the device tree bindings. An example is shown below for K2HK SoC

gbe@90000 { /* ETHSS */
     interfaces {
         gbe0: interface-0 {
             phys = <&serdes_lane0>;
             slave-port = <0>;
             link-interface = <1>;
             phy-handle = <&ethphy0>;
         };
         gbe1: interface-1 {
             phys = <&serdes_lane1>;
             slave-port = <1>;
             link-interface = <1>;
             phy-handle = <&ethphy1>;
         };
     };
        };

AS we can see in the above, the link-interface attribute must be appropriately changed to decide the mode of operation. The link-interface may appear under secondary-slave-ports which are ports on EVM going to edge connectors such as AMC

gbe@90000 { /* ETHSS */
          secondary-slave-ports {
                  port-2 {
                       phys = <&serdes_lane2>;
                       slave-port = <2>;
                       link-interface   = <2>;
                  };
                  port-3 {
                        phys = <&serdes_lane3>;
                        slave-port = <3>;
                        link-interface  = <2>;
                  };
          };
};

which needs to added in "keystone-k2kh-evm.dts". K2E has 8 SGMII ports and K2H has 4 sgmii ports. We can use the bindings in their respective DTS files.

Thanks,

Rajarajan U

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66AK2H14: We can't enable the four Gigabit Ethernet NetCP interfaces