AM625: Using WKUP_UART0 and MCU_UART0 in Linux

Part Number: AM625

Hello,

My understanding of the default use of the UARTs per [FAQ] SK-AM62: Purpose Of Different UARTs

MAIN_UART0: Used for Linux and U-Boot on A53

MAIN_UART1: TIFS logging console

WKUP_UART0: DM logging console

MCU_UART0: MCU+SDK console

I also understand that TIFS logging can be disabled per AM625: Disable MAIN_UART1 in TIFS firmware so that MAIN_UART1 can be used in Linux running on the A53 cores.

My question is: can the same be done for WKUP_UART0 and MCU_UART0? It's unclear to me from documentation online whether this can be done, and comments in the Linux device tree suggest that it shouldn't be done:

&wkup_uart0 {
        /* WKUP UART0 is used by DM firmware */
        status = "reserved";
};

I want to be certain that there won't be a conflict between domains if we use WKUP_UART0 and MCU_UART0 in Linux.

Thanks,

DB