linux-kernel - [PATCH] net: sfp: add quirk for DFP-34X-2C2 GPON ONU SFP

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Date: Sun,  7 Jan 2024 17:17:57 +0100
From: Sergio Palumbo <palumbo.ser@...look.it>
To: Russell King <linux@...linux.org.uk>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH]     net: sfp: add quirk for DFP-34X-2C2 GPON ONU SFP

    Add a quirk for a GPON SFP that identifies itself as "OEM"
    "DFP-34X-2C2". This module's PHY is accessible at 1000base-X,
    but can also run at 2500base-X as per specs of the module.
    After application of the quirk the module is enebled to run both
    at 1000base-X as well as at 2500base-X interface mode.

Signed-off-by: Sergio Palumbo <palumbo.ser@...look.it>
---
 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 f75c9eb3958e..1a447e3567c8 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -506,6 +506,9 @@ static const struct sfp_quirk sfp_quirks[] = {
 	SFP_QUIRK_M("OEM", "SFP-2.5G-T", sfp_quirk_oem_2_5g),
 	SFP_QUIRK_F("OEM", "RTSFP-10", sfp_fixup_rollball_cc),
 	SFP_QUIRK_F("OEM", "RTSFP-10G", sfp_fixup_rollball_cc),
+	// DFP-34X-2C2 GPON ONU supports 2500base-X
+	SFP_QUIRK_M("OEM", "DFP-34X-2C2", sfp_quirk_2500basex),
+
 	SFP_QUIRK_F("Turris", "RTSFP-10", sfp_fixup_rollball),
 	SFP_QUIRK_F("Turris", "RTSFP-10G", sfp_fixup_rollball),
 };
-- 
2.34.1