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| author |   Jakub Kicinski <kuba@kernel.org> | 2025-07-08 18:12:55 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-08 18:12:55 -0700 |
| commit | 3c78f91e82d65d8927dc7976636bc5fae666370a (patch) | |
| tree | ea340a36cc2b811b88f10bac9db06bfe416bd788 /tools/perf/scripts | |
| parent | net: stmmac: Fix interrupt handling for level-triggered mode in DWC_XGMAC2 (diff) | |
| parent | net: phy: smsc: Fix link failure in forced mode with Auto-MDIX (diff) | |
| download | wireguard-linux-3c78f91e82d65d8927dc7976636bc5fae666370a.tar.xz wireguard-linux-3c78f91e82d65d8927dc7976636bc5fae666370a.zip | |
Merge branch 'net-phy-smsc-robustness-fixes-for-lan87xx-lan9500'
Oleksij Rempel says:
====================
net: phy: smsc: robustness fixes for LAN87xx/LAN9500
The SMSC 10/100 PHYs (LAN87xx family) found in smsc95xx (lan95xx)
USB-Ethernet adapters show several quirks around the Auto-MDIX feature:
- A hardware strap (AUTOMDIX_EN) may boot the PHY in fixed-MDI mode, and
the current driver cannot always override it.
- When Auto-MDIX is left enabled while autonegotiation is forced off,
the PHY endlessly swaps the TX/RX pairs and never links up.
- The driver sets the enable bit for Auto-MDIX but forgets the override
bit, so userspace requests are silently ignored.
- Rapid configuration changes can wedge the link if PHY IRQs are
enabled.
The four patches below make the MDIX state fully predictable and prevent
link failures in every tested strap / autoneg / MDI-X permutation.
Tested on LAN9512 Eval board.
====================
Link: https://patch.msgid.link/20250703114941.3243890-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts')
0 files changed, 0 insertions, 0 deletions