This adds support for internal delay on RX and TX on RGMII interface for the
AR8035 phy.
This is basically the same Linux driver do. Tested on a Zynq Zturn board (for
which u-boot support in is my tree; first patch waiting ML approval)
Signed-off-by: Andrea Merello <andrea.mere...@gmail.com>
diff --git a/drivers/net/phy/atheros.c b/drivers/net/phy/atheros.c
index e57c412..694a338 100644
--- a/drivers/net/phy/atheros.c
+++ b/drivers/net/phy/atheros.c
@@ -31,6 +31,22 @@ static int ar8035_config(struct phy_device *phydev)
regval = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, (regval|0x0100));
+ if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
+ (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
+ /* select debug reg 5 */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1D, 0x5);
+ /* enable tx delay */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1E, 0x0100);
+ }
+
+ if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
+ (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)) {
+ /* select debug reg 0 */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1D, 0x0);
+ /* enable rx delay */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1E, 0x8000);
+ }
+
phydev->supported = phydev->drv->features;
genphy_config_aneg(phydev);
--
2.1.4
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