CONFIG_VT8500_TIMER (not configurable)

modulename: timer-vt8500.ko

and/or

vt8500_timer.ko

configname: CONFIG_VT8500_TIMER

Linux Kernel Configuration
└─>Device Drivers
└─>Clock Source drivers
└─>VT8500_TIMER
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
drivers/clocksource/vt8500_timer.c
depends
 or CONFIG_GENERIC_CLOCKEVENTS |
| CONFIG_HAS_IOMEM