According to the datasheet to access the extended registers we have to:

1. Write Register 31 Data = 0x0XYZ (Page 0xXYZ) 2. Read/Write the target Register Data 3. Write Register 31 Data = 0x0000 or 0xa42 (switch back to IEEE Standard Registers)

Hook the missing functions so that we can use the `mdio rx/wx` command to easily access the extended registers.

Signed-off-by: Carlo Caione ccaione@baylibre.com --- drivers/net/phy/realtek.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index b3e6578df9..3bea1fa9d0 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -57,6 +57,31 @@ #define MIIM_RTL8211F_TX_DELAY 0x100 #define MIIM_RTL8211F_LCR 0x10

+static int rtl8211f_phy_extread(struct phy_device *phydev, int addr, + int devaddr, int regnum) +{ + int oldpage = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT); + int val; + + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, devaddr); + val = phy_read(phydev, MDIO_DEVAD_NONE, regnum); + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, oldpage); + + return val; +} + +static int rtl8211f_phy_extwrite(struct phy_device *phydev, int addr, + int devaddr, int regnum, u16 val) +{ + int oldpage = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT); + + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, devaddr); + phy_write(phydev, MDIO_DEVAD_NONE, regnum, val); + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, oldpage); + + return 0; +} + static int rtl8211b_probe(struct phy_device *phydev) { #ifdef CONFIG_RTL8211X_PHY_FORCE_MASTER @@ -336,6 +361,8 @@ static struct phy_driver RTL8211F_driver = { .config = &rtl8211f_config, .startup = &rtl8211f_startup, .shutdown = &genphy_shutdown, + .readext = &rtl8211f_phy_extread, + .writeext = &rtl8211f_phy_extwrite, };

int phy_realtek_init(void)