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Subject[PATCH AUTOSEL 6.6 20/31] net: sfp: add quirk for FS's 2.5G copper SFP
Date
From: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>

[ Upstream commit e27aca3760c08b7b05aea71068bd609aa93e7b35 ]

Add a quirk for a copper SFP that identifies itself as "FS" "SFP-2.5G-T".
This module's PHY is inaccessible, and can only run at 2500base-X with the
host without negotiation. Add a quirk to enable the 2500base-X interface mode
with 2500base-T support and disable auto negotiation.

Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Link: https://lore.kernel.org/r/20230925080059.266240-1-Raju.Lakkaraju@microchip.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/sfp.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index a50038a452507..3679a43f4eb02 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -468,6 +468,9 @@ static const struct sfp_quirk sfp_quirks[] = {
SFP_QUIRK("HUAWEI", "MA5671A", sfp_quirk_2500basex,
sfp_fixup_ignore_tx_fault),

+ // FS 2.5G Base-T
+ SFP_QUIRK_M("FS", "SFP-2.5G-T", sfp_quirk_oem_2_5g),
+
// Lantech 8330-262D-E can operate at 2500base-X, but incorrectly report
// 2500MBd NRZ in their EEPROM
SFP_QUIRK_M("Lantech", "8330-262D-E", sfp_quirk_2500basex),
--
2.42.0
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