HPET_FREQ
#define HPET_TARGET_TICKS (HPET_FREQ / 10)
hrtime_t time_target = (tick_delta * NANOSEC) / HPET_FREQ;
cap |= (FS_PER_S / HPET_FREQ) << 32; /* tick period in fs */
val += hrt_freq_count(delta, HPET_FREQ);
const hrtime_t delta = hrt_freq_interval(HPET_FREQ,