CONFIG_SYS_SUPPORTS_SH_CMT (not configurable)

configname: CONFIG_SYS_SUPPORTS_SH_CMT

Linux Kernel Configuration
└─>Device Drivers
└─>Clock Source drivers
└─>SYS_SUPPORTS_SH_CMT
In linux kernel since version 3.10 (release Date: 2013-06-30)  
depends
NOT CONFIG_ARCH_USES_GETTIMEOFFSET

is depended by
CONFIG_ARCH_RCAR_GEN3