CONFIG_SYS_SUPPORTS_EM_STI (not configurable)

configname: CONFIG_SYS_SUPPORTS_EM_STI

Linux Kernel Configuration
└─>Device Drivers
└─>Clock Source drivers
└─>SYS_SUPPORTS_EM_STI
In linux kernel since version 3.15 (release Date: 2014-06-08)  
depends
NOT CONFIG_ARCH_USES_GETTIMEOFFSET

is depended by
CONFIG_ARCH_EMEV2