Disabling UART0 by modifying enabled_uarts flag causes all other UARTs to malfunction

For my custom project using the OMAP-L138 processor, I will not be using the UART0 and hence, I would like to shut it down. I know that by default, all UARTs are enabled in the beginning and they are only shutdown later if not required. In order to try to reduce the powerup time, I would like to not enable the unused UART from the start. Meaning that I modify the codes "enabled_uarts = ( (1<<0) | (1<<1) | (1<<2))" in the file board-da850-evm.c to "enabled_uarts = ( (0<<0) | (1<<1) | (1<<2))". By doing this, I find that not only is UART0 being disabled, but both UART1 and UART2 are disabled as well. Is there a way for me to go about this? Thanks.