Maximum number of Altera UART ports

configname: CONFIG_SERIAL_ALTERA_UART_MAXPORTS

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Maximum number of Altera UART ports
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
This setting lets you define the maximum number of the Altera
UART ports. The usual default varies from board to board, and
this setting is a way of catering for that.