From 05b29aa0cb6875e1d91eec5ba1949e8d0c1f2618 Mon Sep 17 00:00:00 2001 From: Madalin Bucur Date: Fri, 18 Aug 2017 11:35:24 +0300 Subject: [PATCH] net: phy: realtek: fix enabling of the TX-delay for RTL8211F The old logic always enabled the TX-delay when the phy-mode was set to PHY_INTERFACE_MODE_RGMII. With this patch we enable the TX delay for PHY_INTERFACE_MODE_RGMII_ID and PHY_INTERFACE_MODE_RGMII_TXID and disable it for PHY_INTERFACE_MODE_RGMII. Based on a similar change made in the Linux Realtek PHY driver by Martin Blumenstingl . Signed-off-by: Madalin Bucur Acked-by: Joe Hershberger Acked-by: York Sun --- drivers/net/phy/realtek.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index 635acf5844..6d917f86f4 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -95,17 +95,21 @@ static int rtl8211f_config(struct phy_device *phydev) phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET); - if (phydev->interface == PHY_INTERFACE_MODE_RGMII) { - /* enable TXDLY */ - phy_write(phydev, MDIO_DEVAD_NONE, - MIIM_RTL8211F_PAGE_SELECT, 0xd08); - reg = phy_read(phydev, MDIO_DEVAD_NONE, 0x11); + phy_write(phydev, MDIO_DEVAD_NONE, + MIIM_RTL8211F_PAGE_SELECT, 0xd08); + reg = phy_read(phydev, MDIO_DEVAD_NONE, 0x11); + + /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */ + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || + phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) reg |= MIIM_RTL8211F_TX_DELAY; - phy_write(phydev, MDIO_DEVAD_NONE, 0x11, reg); - /* restore to default page 0 */ - phy_write(phydev, MDIO_DEVAD_NONE, - MIIM_RTL8211F_PAGE_SELECT, 0x0); - } + else + reg &= ~MIIM_RTL8211F_TX_DELAY; + + phy_write(phydev, MDIO_DEVAD_NONE, 0x11, reg); + /* restore to default page 0 */ + phy_write(phydev, MDIO_DEVAD_NONE, + MIIM_RTL8211F_PAGE_SELECT, 0x0); /* Set green LED for Link, yellow LED for Active */ phy_write(phydev, MDIO_DEVAD_NONE,