[PATCH 6.18 281/752] net: sfp: add quirk for Lantech 8330-265D

Sasha Levin
2026-02-28T17:52:03Z

From: Marek Behún <kabel@kernel.org>

[ Upstream commit 86a8e8e0ddbc3d14c799536eb888180b84d002f3 ]

Similar to Lantech 8330-262D-E, the Lantech 8330-265D also reports
2500MBd instead of 3125MBd.

Also, all 8330-265D report normal RX_LOS in EEPROM, but some signal
inverted RX_LOS. We therefore need to ignore RX_LOS on these modules.

Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://patch.msgid.link/20260128170044.15576-1-kabel@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/sfp.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 3e023723887c4..43aefdd8b70f7 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -532,9 +532,13 @@ static const struct sfp_quirk sfp_quirks[] = {
SFP_QUIRK("HUAWEI", "MA5671A", sfp_quirk_2500basex,
sfp_fixup_ignore_tx_fault),

- // Lantech 8330-262D-E can operate at 2500base-X, but incorrectly report
- // 2500MBd NRZ in their EEPROM
+ // Lantech 8330-262D-E and 8330-265D can operate at 2500base-X, but
+ // incorrectly report 2500MBd NRZ in their EEPROM.
+ // Some 8330-265D modules have inverted LOS, while all of them report
+ // normal LOS in EEPROM. Therefore we need to ignore LOS entirely.
SFP_QUIRK_S("Lantech", "8330-262D-E", sfp_quirk_2500basex),
+ SFP_QUIRK("Lantech", "8330-265D", sfp_quirk_2500basex,
+ sfp_fixup_ignore_los),

SFP_QUIRK_S("UBNT", "UF-INSTANT", sfp_quirk_ubnt_uf_instant),

--
2.51.0