Hello Ilya Krasavin,
For MAC to MAC connection Ethernet devices without connecting to a normal MDIO-managed PHY device, the user needs to use fixed-link sub-node in the Ethernet port device node definition in the device tree file.Please refer to the following definition
enet3: ethernet@e6000 {
fixed-link = <0 1 1000 0 0>;
phy-connection-type = "rgmii";
};
Please refer to the following properties definition for "fixed-link".* A 'fixed-link' property in the Ethernet MAC node, with 5 cells, of the form with the following accepted values:
- a: emulated PHY ID, choose any but but unique to the all specified fixed-links, from 0 to 31
- b: duplex configuration: 0 for half duplex, 1 for full duplex
- c: link speed in Mbits/sec, accepted values are: 10, 100 and 1000
- d: pause configuration: 0 for no pause, 1 for pause
- e: asymmetric pause configuration: 0 for no asymmetric pause, 1 for asymmetric pause
For Marvell dsa l2switch definition, you could refer to "dsa@0" definition in arch/arm/boot/dts/kirkwood-rd88f6281.dtsi. Marwel 88E6176 Linux Kernel is in drivers/net/dsa/mv88e6352.c, please build it into Linux Kernel image.
Have a great day,
TIC
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