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| author | Jakub Kicinski <kuba@kernel.org> | 2025-07-09 04:12:55 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-09 04:12:55 +0300 |
| commit | 3c78f91e82d65d8927dc7976636bc5fae666370a (patch) | |
| tree | ea340a36cc2b811b88f10bac9db06bfe416bd788 /scripts/gdb/linux | |
| parent | 78b7920a03351a8402de2f81914c1d2e2bdf24b7 (diff) | |
| parent | 9dfe110cc0f6ef42af8e81ce52aef34a647d0b8a (diff) | |
| download | linux-3c78f91e82d65d8927dc7976636bc5fae666370a.tar.xz | |
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 'scripts/gdb/linux')
0 files changed, 0 insertions, 0 deletions