MGMT_PAL_EXT_MDIO
#define MGMT_CLKON (MGMT_PAL_INT_MDIO|MGMT_PAL_EXT_MDIO|MGMT_PAL_OENAB|MGMT_PAL_DCLOCK)
#define MGMT_CLKOFF (MGMT_PAL_INT_MDIO|MGMT_PAL_EXT_MDIO|MGMT_PAL_OENAB)
sbus_writel(bit | (MGMT_PAL_OENAB | MGMT_PAL_EXT_MDIO),
sbus_writel(bit | MGMT_PAL_OENAB | MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK,
sbus_writel(MGMT_PAL_EXT_MDIO, tregs + TCVR_MPAL);
sbus_writel(MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK,
retval = (sbus_readl(tregs + TCVR_MPAL) & MGMT_PAL_EXT_MDIO) >> 2;
sbus_writel(MGMT_PAL_EXT_MDIO, tregs + TCVR_MPAL);
sbus_writel(MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK, tregs + TCVR_MPAL);
retval = (sbus_readl(tregs + TCVR_MPAL) & MGMT_PAL_EXT_MDIO) >> 2;
sbus_writel(MGMT_PAL_INT_MDIO | MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK,
sbus_writel(MGMT_PAL_INT_MDIO | MGMT_PAL_EXT_MDIO, tregs + TCVR_MPAL);
if (mpal & MGMT_PAL_EXT_MDIO) {