Is it possible, during the U-Boot stage in L4T 35.1, to send information only to the debug serial port without sending it to other serial ports?

Is it possible, during the U-Boot stage in L4T 35.1, to send information only to the debug serial port without sending it to other serial ports?

Hi liuyuhangpro,

There’s no U-boot in R35.x release, it uses UEFI as bootloader instead.

Are you using the devkit or custom board for Xavier NX?

The serial console log will output to debug port by default.
Which UART interface would you lilke to use?

Besides the debug serial port, UART0 serial port also outputs logs. I would like to ask if it is possible to remove the output from UART0 and only retain the output from the debug port.

Please run the following command to check if it could help for your case.

$ sudo systemctl stop nvgetty.service
$ sudo systemctl disable nvgetty.service

and share the result of the following commnd:

$ cat /proc/cmdline

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