MSCC_EXT_PAGE_CSR_CNTL_19
phy_base_write(phydev, MSCC_EXT_PAGE_CSR_CNTL_19,
val = phy_base_read(phydev, MSCC_EXT_PAGE_CSR_CNTL_19);
phy_base_write(phydev, MSCC_EXT_PAGE_CSR_CNTL_19,
val = phy_base_read(phydev, MSCC_EXT_PAGE_CSR_CNTL_19);