PCC_TIMER_CLOCK_FREQ
#define PCC_TIMER_CYCLES (PCC_TIMER_CLOCK_FREQ / HZ)
clocksource_register_hz(&mvme147_clk, PCC_TIMER_CLOCK_FREQ);
#define PCC_TIMER_CYCLES (PCC_TIMER_CLOCK_FREQ / HZ)
clocksource_register_hz(&mvme16x_clk, PCC_TIMER_CLOCK_FREQ);