SA1100 serial port support

modulename: sa1100.ko

configname: CONFIG_SERIAL_SA1100

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>SA1100 serial port support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
can enable its onboard serial port by enabling this option.
Please read Documentation/arm/SA1100/serial_UART for further
info.

source code:
drivers/tty/serial/sa1100.c