--- /dev/null
+From b856150c8098f12996ee81c3ab2a65adbaeeb3ec Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Sun, 27 Jun 2021 12:16:07 +0200
+Subject: [PATCH] net: phy: at803x: mask 1000 Base-X link mode
+
+AR8031/AR8033 have different status registers for copper
+and fiber operation. However, the extended status register
+is the same for both operation modes.
+
+As a result of that, ESTATUS_1000_XFULL is set to 1 even when
+operating in copper TP mode.
+
+Remove this mode from the supported link modes, as this driver
+currently only supports copper operation.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/at803x.c | 30 +++++++++++++++++++++++++++++-
+ 1 file changed, 29 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -583,6 +583,34 @@ static void at803x_remove(struct phy_dev
+ regulator_disable(priv->vddio);
+ }
+
++static int at803x_get_features(struct phy_device *phydev)
++{
++ int err;
++
++ err = genphy_read_abilities(phydev);
++ if (err)
++ return err;
++
++ if (!at803x_match_phy_id(phydev, ATH8031_PHY_ID))
++ return 0;
++
++ /* AR8031/AR8033 have different status registers
++ * for copper and fiber operation. However, the
++ * extended status register is the same for both
++ * operation modes.
++ *
++ * As a result of that, ESTATUS_1000_XFULL is set
++ * to 1 even when operating in copper TP mode.
++ *
++ * Remove this mode from the supported link modes,
++ * as this driver currently only supports copper
++ * operation.
++ */
++ linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
++ phydev->supported);
++ return 0;
++}
++
+ static int at803x_clk_out_config(struct phy_device *phydev)
+ {
+ struct at803x_priv *priv = phydev->priv;
+@@ -1156,7 +1184,7 @@ static struct phy_driver at803x_driver[]
+ .resume = at803x_resume,
+ .read_page = at803x_read_page,
+ .write_page = at803x_write_page,
+- /* PHY_GBIT_FEATURES */
++ .get_features = at803x_get_features,
+ .read_status = at803x_read_status,
+ .aneg_done = at803x_aneg_done,
+ .ack_interrupt = &at803x_ack_interrupt,