MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL
ret = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL);
ret = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,