netdev - [PATCH net-next V1] net: sfp: add quirk for FS's 2.5G copper SFP

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Date: Mon, 25 Sep 2023 13:30:59 +0530
From: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <Jose.Abreu@...opsys.com>, <linux@...linux.org.uk>,
	<hkallweit1@...il.com>, <UNGLinuxDriver@...rochip.com>
Subject: [PATCH net-next V1] net: sfp: add quirk for FS's 2.5G copper SFP

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@...rochip.com>
---

Change List:
============
V0 -> V1:
  - As per review comments, removed FS's DAC10 cable changes
    (i.e. [PATCH net-next 2/2] net: sfp: add quirk for FS's DAC10G SFP
(SFPP-PC01))

 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 4ecfac227865..297d7ce3e7d0 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -463,6 +463,9 @@ 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),
-- 
2.34.1