Device Tree runtime unit tests

modulename: unittest.ko

configname: CONFIG_OF_UNITTEST

Linux Kernel Configuration
└─>Device Drivers
└─>Device Tree and Open Firmware support
└─>Device Tree runtime unit tests
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option builds in test cases for the device tree infrastructure
that are executed once at boot time, and the results dumped to the
console.

If unsure, say N here, but this option is safe to enable.

source code:
selects
CONFIG_IRQ_DOMAIN
CONFIG_OF_EARLY_FLATTREE
CONFIG_OF_RESOLVE

depends
CONFIG_OF
NOT CONFIG_SPARC