RTC_TIMER_CLOCK_FREQ  164 arch/m68k/bvme6000/config.c #define RTC_TIMER_CYCLES     (RTC_TIMER_CLOCK_FREQ / HZ)
RTC_TIMER_CLOCK_FREQ  219 arch/m68k/bvme6000/config.c     clocksource_register_hz(&bvme6000_clk, RTC_TIMER_CLOCK_FREQ);