[PATCH net v2] net: phy: realtek: Clear MDIO_AN_10GBT_CTRL_ADV10G bit
From: Jan Klos
Date: Fri Jun 19 2026 - 21:22:07 EST
On RTL8127A connected to a link partner that advertises 10000baseT
speed cannot be changed to anything other than 10000baseT as 10GbE
is always advertised regardless of any setting. Fix this by
clearing MDIO_AN_10GBT_CTRL_ADV10G bit in rtl822x_config_aneg()'s
call to phy_modify_mmd_changed().
Fixes: 83d962316128 ("net: phy: realtek: add RTL8127-internal PHY")
Reviewed-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
Signed-off-by: Jan Klos <honza.klos@xxxxxxxxx>
---
v2: Patch formalities (rebase, tree name, tags, ccs)
drivers/net/phy/realtek/realtek_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index 27268811f564..b65d0f5fa1a0 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -1802,7 +1802,8 @@ static int rtl822x_config_aneg(struct phy_device *phydev)
ret = phy_modify_mmd_changed(phydev, MDIO_MMD_VEND2,
RTL_MDIO_AN_10GBT_CTRL,
MDIO_AN_10GBT_CTRL_ADV2_5G |
- MDIO_AN_10GBT_CTRL_ADV5G, adv);
+ MDIO_AN_10GBT_CTRL_ADV5G |
+ MDIO_AN_10GBT_CTRL_ADV10G, adv);
if (ret < 0)
return ret;
}
--
2.54.0