TARGET_PERIOD
CG_TACH_CTRL, TARGET_PERIOD, tach_period);
CG_TACH_CTRL, TARGET_PERIOD,
CG_TACH_CTRL, TARGET_PERIOD,
CG_TACH_CTRL, TARGET_PERIOD,
CG_TACH_CTRL, TARGET_PERIOD,
CG_TACH_CTRL, TARGET_PERIOD,
tmp |= TARGET_PERIOD(tach_period);
tmp |= TARGET_PERIOD(tach_period);