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 = 0x 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
---
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)
--
2.19.1
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