NEC VR4100 series Serial Interface Unit support

modulename: vr41xx_siu.ko

configname: CONFIG_SERIAL_VR41XX

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>NEC VR4100 series Serial Interface Unit support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you have a NEC VR4100 series processor and you want to use
Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
(not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.

source code:

depends
CONFIG_CPU_VR41XX
CONFIG_GENERIC_HARDIRQS
CONFIG_HAS_IOMEM
CONFIG_TTY