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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 <martin.blumenstingl@googlemail.com>.

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Madalin Bucur 2017-08-18 11:35:24 +03:00 committed by Joe Hershberger
parent 84a42069f2
commit 05b29aa0cb
1 changed files with 14 additions and 10 deletions
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10
drivers/net/phy/realtek.c
View File

@ -95,17 +95,21 @@ static int rtl8211f_config(struct phy_device *phydev)
phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET); 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, phy_write(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PAGE_SELECT, 0xd08); MIIM_RTL8211F_PAGE_SELECT, 0xd08);
reg = phy_read(phydev, MDIO_DEVAD_NONE, 0x11); 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; reg |= MIIM_RTL8211F_TX_DELAY;
else
reg &= ~MIIM_RTL8211F_TX_DELAY;
phy_write(phydev, MDIO_DEVAD_NONE, 0x11, reg); phy_write(phydev, MDIO_DEVAD_NONE, 0x11, reg);
/* restore to default page 0 */ /* restore to default page 0 */
phy_write(phydev, MDIO_DEVAD_NONE, phy_write(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PAGE_SELECT, 0x0); MIIM_RTL8211F_PAGE_SELECT, 0x0);
}
/* Set green LED for Link, yellow LED for Active */ /* Set green LED for Link, yellow LED for Active */
phy_write(phydev, MDIO_DEVAD_NONE, phy_write(phydev, MDIO_DEVAD_NONE,