Assign static mac to second ethernet

Technical Support
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1

I am using an iMX6 Solo in the evaluation board.
IN my application I have to use two ethernet. One is default ethernet and second i am adding using SPI ethernet.
I have used the ENC28J60 module with SPI interface. I had add below code in device-tree file.

/* Colibri SSP */
&ecspi4 {
	enc28j60x0: enc28j60x@0 {
		compatible = "microchip,enc28j60";
		reg = <0>;
	//	clocks = <&clk16m>;
		interrupt-parent = <&gpio3>;
		interrupts = <27 0x2>;
		spi-max-frequency = <10000000>;
		status = "okay";
	};
	/* To keep the CAN controller enabled by default,
	 * disable conflicting spidev. This spidev device
	 * enables with the devicetree overlay.
	 */
	spidev0: spidev@0 {
		status = "disabled";
	};
};

My second ethernet is working. but the problem is the MAC address is changed in every boot.
How can I assign static mac to this interface?

2

Hi Brijesh,

Have you tried adding optional property local-mac-address or mac-address in device tree node

 /* Colibri SSP */
 &ecspi4 {
     enc28j60x0: enc28j60x@0 {
         compatible = "microchip,enc28j60";
         reg = <0>;
     //    clocks = <&clk16m>;
         interrupt-parent = <&gpio3>;
         interrupts = <27 0x2>;
         spi-max-frequency = <10000000>;
         local-mac-address = [aa ee 03 04 01 02];
         status = "okay";
     };
     /* To keep the CAN controller enabled by default,
      * disable conflicting spidev. This spidev device
      * enables with the devicetree overlay.
      */
     spidev0: spidev@0 {
         status = "disabled";
     };
 };

Let me know if that works for you.

Best Regards

Ritesh Kumar

3

Hi

I had tried this but still mac address change at every boot.

4

Hi Brijesh,

We do not have hardware to test, ideally as per documentation this should be enough to set MAC.
Another method you can try from systemd-networkd setting the MAC.

/etc/systemd/network/00-eth1.link
    
[Match]
Interface=eth1

[Link]
MACAddress=aa:ee:03:04:01:02

Reference link below

https://wiki.archlinux.org/index.php/MAC_address_spoofing

Best Regards

Ritesh Kumar