[PATCH net-next v2] net: sfp: add quirk for OEM SFP+ONU-XGSPON

[PATCH net-next v2] net: sfp: add quirk for OEM SFP+ONU-XGSPON

[Romit Sagu]

This XGS-PON ONU stick (vendor OEM, part SFP+ONU-XGSPON)
needs the same handling as other Potron-based modules. Without it,
the module fails to connect and the kernal shows these errors:
sfp sfp1: module transmit fault indicated
sfp sfp1: module persistently indicates fault, disabling

This module requires TX_FAULT/LOS behaviour and boot delay tuning.
Add a quirk using the existing sfp_fixup_potron.

Signed-off-by: Romit Sagu <romit@romitsagu.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
v2:
- Move the new quirk to be better sorted alphabetically within the
  OEM section and next to another XGS-PON ONT (requested by Jakub Kicinski)
- Added LOS in the quirk comment (recommended by Sashiko)

v1: https://lore.kernel.org/all/20261103011849.181392-1-romit@romitsagu.com/

---
 drivers/net/phy/sfp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 85e57a16bb52..915156743701 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -638,6 +638,10 @@ static const struct sfp_quirk sfp_quirks[] = {
 	SFP_QUIRK_F("OEM", "RTSFP-10", sfp_fixup_rollball_cc),
 	SFP_QUIRK_F("OEM", "RTSFP-10G", sfp_fixup_rollball_cc),
 
+	// OEM SFP+ONU-XGSPON is a XGS-PON ONT stick with broken TX_FAULT and
+	// LOS indicators and slow startup, just like potron.
+	SFP_QUIRK_F("OEM", "SFP+ONU-XGSPON", sfp_fixup_potron),
+
 	// OEM XGSPONST2001 is an XGS-PON ONT stick with broken TX_FAULT and
 	// LOS indicators and slow startup, just like potron. On cold
 	// power-up the EEPROM vendor PN field reads back with non-printable
-- 
2.43.0