linux-kernel - [PATCH net-next v2] net: sfp: add quirk for FS SFP-10GM-T copper SFP+ module

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Message-ID: <20250227071058.1520027-1-ms@dev.tdt.de>
Date: Thu, 27 Feb 2025 08:10:58 +0100
From: Martin Schiller <ms@....tdt.de>
To: linux@...linux.org.uk, andrew@...n.ch, hkallweit1@...il.com,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Martin Schiller <ms@....tdt.de>
Subject: [PATCH net-next v2] net: sfp: add quirk for FS SFP-10GM-T copper SFP+ module

Add quirk for a copper SFP that identifies itself as "FS" "SFP-10GM-T".
It uses RollBall protocol to talk to the PHY and needs 4 sec wait before
probing the PHY.

Signed-off-by: Martin Schiller <ms@....tdt.de>
---

=== Changelog ===
>From v1:
* rename sfp_fixup_fs_2_5gt to sfp_fixup_rollball_wait4s

---
 drivers/net/phy/sfp.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 9369f5297769..c88217af44a1 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -385,7 +385,7 @@ static void sfp_fixup_rollball(struct sfp *sfp)
 	sfp->phy_t_retry = msecs_to_jiffies(1000);
 }
 
-static void sfp_fixup_fs_2_5gt(struct sfp *sfp)
+static void sfp_fixup_rollball_wait4s(struct sfp *sfp)
 {
 	sfp_fixup_rollball(sfp);
 
@@ -399,7 +399,7 @@ static void sfp_fixup_fs_2_5gt(struct sfp *sfp)
 static void sfp_fixup_fs_10gt(struct sfp *sfp)
 {
 	sfp_fixup_10gbaset_30m(sfp);
-	sfp_fixup_fs_2_5gt(sfp);
+	sfp_fixup_rollball_wait4s(sfp);
 }
 
 static void sfp_fixup_halny_gsfp(struct sfp *sfp)
@@ -479,9 +479,10 @@ static const struct sfp_quirk sfp_quirks[] = {
 	// PHY.
 	SFP_QUIRK_F("FS", "SFP-10G-T", sfp_fixup_fs_10gt),
 
-	// Fiberstore SFP-2.5G-T uses Rollball protocol to talk to the PHY and
-	// needs 4 sec wait before probing the PHY.
-	SFP_QUIRK_F("FS", "SFP-2.5G-T", sfp_fixup_fs_2_5gt),
+	// Fiberstore SFP-2.5G-T and SFP-10GM-T uses Rollball protocol to talk
+	// to the PHY and needs 4 sec wait before probing the PHY.
+	SFP_QUIRK_F("FS", "SFP-2.5G-T", sfp_fixup_rollball_wait4s),
+	SFP_QUIRK_F("FS", "SFP-10GM-T", sfp_fixup_rollball_wait4s),
 
 	// Fiberstore GPON-ONU-34-20BI can operate at 2500base-X, but report 1.2GBd
 	// NRZ in their EEPROM
-- 
2.39.5