SHIFT6
#define PHY_M_LED_MO_100(x) SHIFT6(x) /* Bit 7.. 6: Link 100 */
#define PHY_M_POLC_LOS_CTRL(x) (SHIFT6(x) & PHY_M_POLC_LOS_MSK)
#define GM_SMI_CT_REG_AD(x) (SHIFT6(x) & GM_SMI_CT_REG_A_MSK)