Support for Synopsys DesignWare 8250 quirks

modulename: 8250_dw.ko

configname: CONFIG_SERIAL_8250_DW

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Support for Synopsys DesignWare 8250 quirks
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Selecting this option will enable handling of the extra features
present in the Synopsys DesignWare APB UART.

source code:
drivers/tty/serial/8250/8250_dw.c