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From:   Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
To:     <netdev@vger.kernel.org>
CC:     <davem@davemloft.net>, <kuba@kernel.org>,
        <linux-kernel@vger.kernel.org>, <andrew@lunn.ch>,
        <linux@armlinux.org.uk>, <UNGLinuxDriver@microchip.com>
Subject: [PATCH net-next 1/2] net: sfp: add quirk for FS's 2.5G copper SFP
Date:   Fri, 21 Jul 2023 11:30:56 +0530
Message-ID: <20230721060057.2998-2-Raju.Lakkaraju@microchip.com>
In-Reply-To: <20230721060057.2998-1-Raju.Lakkaraju@microchip.com>
References: <20230721060057.2998-1-Raju.Lakkaraju@microchip.com>
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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>
---
 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 d855a18308d7..ee049efdf71b 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),
-- 
2.25.1