PHY_M_EC_M_DSC   1452 drivers/net/ethernet/marvell/skge.h #define PHY_M_EC_M_DSC(x)	((u16)(x)<<10) /* 00=1x; 01=2x; 10=3x; 11=4x */
PHY_M_EC_M_DSC   1435 drivers/net/ethernet/marvell/sky2.h #define PHY_M_EC_M_DSC(x)	((u16)(x)<<10 & PHY_M_EC_M_DSC_MSK)