To disable RGMII1 and use only RGMII2, please modify the device tree file “arch/arm64/boot/dts/ti/k3-am62a7-iwg55s-prgjj-41.dts” as shown below:
&cpsw_port1 {
status = “disabled”;
};
After making these changes, rebuild the device tree, replace the updated DTB, and boot the board. Please refer Section “Linux Kernel” for compilation details.
Once RGMII1 is disabled, only one Ethernet interface will be available. RGMII2 will then be automatically registered as eth0.
Verify using “ifconfig” command and test the addon-on board ethernet port.
For further inquiries, please get in touch with mktg@iwave-global.com
Please find the detailed G55S product information in the below link,