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-rw-r--r--target/linux/generic/pending-5.4/730-net-phy-at803x-fix-feature-detection.patch66
1 files changed, 66 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.4/730-net-phy-at803x-fix-feature-detection.patch b/target/linux/generic/pending-5.4/730-net-phy-at803x-fix-feature-detection.patch
new file mode 100644
index 0000000000..f25952a2cc
--- /dev/null
+++ b/target/linux/generic/pending-5.4/730-net-phy-at803x-fix-feature-detection.patch
@@ -0,0 +1,66 @@
+From 97ca310aa18a93329ef5cd68c20de89761962f45 Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Sun, 13 Jun 2021 12:19:36 +0200
+Subject: [PATCH] net: phy: at803x: fix feature detection
+
+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>
+---
+ 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
+@@ -411,6 +411,34 @@ static int at803x_aneg_done(struct phy_d
+ return aneg_done;
+ }
+
++static int at803x_get_features(struct phy_device *phydev)
++{
++ int err;
++
++ err = genphy_read_abilities(phydev);
++ if (err)
++ return err;
++
++ if (!(phydev->phy_id & phydev->drv->phy_id_mask) == (ATH8031_PHY_ID & phydev->drv->phy_id_mask))
++ 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_read_status(struct phy_device *phydev)
+ {
+ int ss, err, old_link = phydev->link;
+@@ -513,7 +541,7 @@ 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,