E1000_TIMINCA_16NS_SHIFT   66 drivers/net/ethernet/intel/igb/igb_ptp.c #define INCPERIOD_82576			BIT(E1000_TIMINCA_16NS_SHIFT)
E1000_TIMINCA_16NS_SHIFT   67 drivers/net/ethernet/intel/igb/igb_ptp.c #define INCVALUE_82576_MASK		GENMASK(E1000_TIMINCA_16NS_SHIFT - 1, 0)