linux-kernel - [PATCH v1] net: sfp: add quirks for ODI DFP-34X-2C2

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Date: Mon, 26 Feb 2024 21:23:46 +0800
From: Shengyu Qu <wiagn233@...look.com>
To: linux@...linux.org.uk,
	andrew@...n.ch,
	hkallweit1@...il.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Shengyu Qu <wiagn233@...look.com>
Subject: [PATCH v1] net: sfp: add quirks for ODI DFP-34X-2C2

ODI DFP-34X-2C2 is capable of 2500base-X, but incorrectly report its
capabilities in the EEPROM.
So use sfp_quirk_2500basex for this module to allow 2500Base-X mode.

Signed-off-by: Shengyu Qu <wiagn233@...look.com>
---
 drivers/net/phy/sfp.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index f75c9eb3958e..2021cb4ff2f6 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -495,6 +495,13 @@ static const struct sfp_quirk sfp_quirks[] = {
 	// 2500MBd NRZ in their EEPROM
 	SFP_QUIRK_M("Lantech", "8330-262D-E", sfp_quirk_2500basex),
 
+	// ODI DFP-34X-2C2 can operate at 2500base-X, but incorrectly report 1300MBd
+	// NRZ in the EEPROM.
+	// Besides, In early batches, vendor id is set to OEM, but that is fixed in
+	// newer batches.
+	SFP_QUIRK_M("ODI", "DFP-34X-2C2", sfp_quirk_2500basex),
+	SFP_QUIRK_M("OEM", "DFP-34X-2C2", sfp_quirk_2500basex),
+
 	SFP_QUIRK_M("UBNT", "UF-INSTANT", sfp_quirk_ubnt_uf_instant),
 
 	// Walsun HXSX-ATR[CI]-1 don't identify as copper, and use the
-- 
2.39.2