From edde25e55d87f0046db64ed7ce634e5a586229e3 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Fri, 16 Aug 2019 21:57:38 +0200 Subject: [PATCH] net: phy: realtek: support NBase-T MMD EEE registers on RTL8125 Emulate the 802.3bz MMD EEE registers for 2.5Gbps EEE on RTL8125. Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/phy/realtek.c | 45 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 2 deletions(-) diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index fa662099fb85..677c45985338 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -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", -- 2.20.1