Tool/software:
Hi,
This is a follow-up to this thread:
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1562893/j721excpxevm-using-wkup-uart0-as-main-uart0/6017302
To summarize, the discussion is about using WKUP_UART as a replacement for MAIN_UART0. Our assumption was that WKUP_UART could be used to display different boot logs since it is the first UART available when the processor powers up.
Our concern is the following:
If we use WKUP_UART both for boot logs and as the Linux terminal, could this have any impact on the system?
Since the device tree marks it as /* Wakeup UART is used by System firmware */, we are not entirely sure whether using it as the console could cause issues later on.
It would also be very helpful if you could share some references or documentation about what exactly the "System Firmware" is.
Thanks in advance,