1eab9b8a9b
bfc17c1658353 net: phy: realtek: disable PHY-mode EEE fabcfd6d10999 net: phy: realtek: add defines for shadowed c45 standard registers 8af2136e77989 net: phy: realtek: add helper RTL822X_VND2_C22_REG 02d3b306ac2f0 net: phy: realtek: switch from paged to MMD ops in rtl822x functions da681ed73fb98 net: phy: realtek: improve mmd register access for internal PHY's 0bea93fdbaf86 net: phy: realtek: use string choices helpers 51773846fab24 net: phy: realtek: make HWMON support a user-visible Kconfig symbol Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> (cherry picked from commit 7673a165a955269773eb604d3678d86d0bb7f49c)
28 lines
1.0 KiB
Diff
28 lines
1.0 KiB
Diff
From: Daniel Golle <daniel@makrotopia.org>
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Date: Thu, 30 Jan 2025 05:38:31 +0000
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Subject: [PATCH] net: phy: realtek: disable MDIO broadcast
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RealTek's PHYs by default also listen on MDIO address 0 which is defined
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as broadcast address. This can lead to problems if there is an actual PHY
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(such as MT7981 built-in PHY) present at this address, as accessing that
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PHY may then confuse the RealTek PHY.
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Disabled listening on the MDIO broadcast address to avoid such problems.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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--- a/drivers/net/phy/realtek/realtek_main.c
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+++ b/drivers/net/phy/realtek/realtek_main.c
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@@ -852,6 +852,11 @@ static int rtl822xb_config_init(struct p
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phydev->host_interfaces) ||
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phydev->interface == PHY_INTERFACE_MODE_SGMII;
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+ /* disable listening on MDIO broadcast address (0) */
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+ ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2, 0xa430, BIT(13));
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+ if (ret < 0)
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+ return ret;
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+
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/* fill in possible interfaces */
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__assign_bit(PHY_INTERFACE_MODE_2500BASEX, phydev->possible_interfaces,
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has_2500);
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