[U-Boot] UART2 Console in u-boot

hi all, this might a little silly question. but still wanted to confirm with you all.

i have a board with PPC440 EP where I load u-boot configuring for yosemite as my design is similar to that. I want the console to configured for the UART's second channel. Is it enough if I change the base address to second channel..Because there are UART base address defined only for UART0 and UART1 even if CONFIG_SERIAL_MULTI is defined.

Some one please clarify my doubt.

Thanks & Regards, Prathika R