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[FAQ] TDA4VM: I do not see CPSW5G/9G interface when booting up with Linux on J7200/J721E devices

Part Number: TDA4VM

I do not see the eth1 interface when booting up with Linux on J7200/J721E devices using SD Card, there is no output on 3rd Main UART instance as well where Ethernet Firmware output usually comes.

  • 1. If this happens then halt at Uboot prompt

    2. use command "printenv" and check if the variable dorprocboot is set to 1 ?

    3. If it's set to 0 then use command "setenv dorprocboot 1" to set to 1 and then use "saveenv" to save variables

    4. Now boot the board with "boot" command

    5. If everything is ok then there will be an eth0 and eth1 interface

    6. If it still doesn't work then go back to uboot and reset environment variables using the command "env default -a" and then use "setenv dorprocboot 1" followed by "saveenv"

    7. You can check Ethernet Firmware output using the command

    "cat /sys/kernel/debug/remoteproc/remoteproc*/trace0"

    It will show something like this

    Regards

    Vineet