How to write 2 Mac address in the EEPROM

[yyamamoto]

I am developing an OrinNX product with 2 LAN ports.
I want to store the MAC addresses of these 2 LAN ports in the EEP ROM. But according to nVidia’s documentation, there is only one MAC address assigned in the EEP ROM.
Where should I write the second MAC address?

nVidia’s document
https://docs.nvidia.com/jetson/archives/r35.1/DeveloperGuide/text/HR/JetsonEepromLayout.html

[WayneWWW]

Hi,

It is not able to do that in eeprom. Eeprom can only store one MAC address.

Device tree can add extra mac address.

1. In the dts, we can set the nvidia,mac-addr-idx to choose which ‘nvidia,ether-macx’ be used, please make sure it isn’t identical to ‘nvidia,ether-mac’

ethernet@6810000 {
nvidia,mac-addr-idx = <0x00>;

+               nvidia,ether-mac8 = "48:B0:2D:68:C9:24";
+               nvidia,ether-mac6 = "48:B0:2D:68:C9:22";
+               nvidia,ether-mac4 = "48:B0:2D:68:C9:20";
+               nvidia,ether-mac2 = "48:B0:2D:68:C9:1E";
+               nvidia,ether-mac0 = "48:B0:2D:68:C9:1C";
+               nvidia,ether-mac9 = "48:B0:2D:68:C9:25";
+               nvidia,ether-mac7 = "48:B0:2D:68:C9:23";
+               nvidia,ether-mac5 = "48:B0:2D:68:C9:21";
+               nvidia,ether-mac = "48:B0:2D:68:C9:1C";
+               nvidia,ether-mac3 = "48:B0:2D:68:C9:1F";
+               nvidia,ether-mac1 = "48:B0:2D:68:C9:1D";

2. For the ethernet@2310000 use the nvidia,ether-mac