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net: phy: realtek: support NBase-T MMD EEE registers on RTL8125

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Emulate the 802.3bz MMD EEE registers for 2.5Gbps EEE on RTL8125.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-08-16 21:57:38 +02:00 committed by David S. Miller
parent 99b60d56a3
commit edde25e55d
1 changed files with 43 additions and 2 deletions
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45
drivers/net/phy/realtek.c
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@ -305,6 +305,47 @@ static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
return ret;
}
static int rtl8125_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
{
int ret = rtlgen_read_mmd(phydev, devnum, regnum);
if (ret != -EOPNOTSUPP)
return ret;
if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE2) {
rtl821x_write_page(phydev, 0xa6e);
ret = __phy_read(phydev, 0x16);
rtl821x_write_page(phydev, 0);
} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
rtl821x_write_page(phydev, 0xa6d);
ret = __phy_read(phydev, 0x12);
rtl821x_write_page(phydev, 0);
} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE2) {
rtl821x_write_page(phydev, 0xa6d);
ret = __phy_read(phydev, 0x10);
rtl821x_write_page(phydev, 0);
}
return ret;
}
static int rtl8125_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
u16 val)
{
int ret = rtlgen_write_mmd(phydev, devnum, regnum, val);
if (ret != -EOPNOTSUPP)
return ret;
if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
rtl821x_write_page(phydev, 0xa6d);
ret = __phy_write(phydev, 0x12, val);
rtl821x_write_page(phydev, 0);
}
return ret;
}
static int rtl8125_get_features(struct phy_device *phydev)
{
int val;
@ -473,8 +514,8 @@ static struct phy_driver realtek_drvs[] = {
.resume = genphy_resume,
.read_page = rtl821x_read_page,
.write_page = rtl821x_write_page,
.read_mmd = rtlgen_read_mmd,
.write_mmd = rtlgen_write_mmd,
.read_mmd = rtl8125_read_mmd,
.write_mmd = rtl8125_write_mmd,
}, {
PHY_ID_MATCH_EXACT(0x001cc961),
.name = "RTL8366RB Gigabit Ethernet",