openwrt/target/linux/generic/backport-5.4/743-v5.5-net-sfp-add-some-quirks-for-GPON-modules.patch

From ecaa542cfed078dbc356dadff0bad4b6a8e704a0 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 17 May 2019 10:14:45 +0100
Subject: [PATCH 641/660] net: sfp: add some quirks for GPON modules

Marc Micalizzi reports that Huawei MA5671A and Alcatel/Lucent G-010S-P
modules are capable of 2500base-X, but incorrectly report their
capabilities in the EEPROM.  It seems rather common that GPON modules
mis-report.

Let's fix these modules by adding some quirks.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/sfp-bus.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -38,7 +38,32 @@ struct sfp_bus {
 	bool started;
 };
 
+static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id,
+				unsigned long *modes)
+{
+	phylink_set(modes, 2500baseX_Full);
+}
+
 static const struct sfp_quirk sfp_quirks[] = {
+	{
+		// Alcatel Lucent G-010S-P can operate at 2500base-X, but
+		// incorrectly report 2500MBd NRZ in their EEPROM
+		.vendor = "ALCATELLUCENT",
+		.part = "G010SP",
+		.modes = sfp_quirk_2500basex,
+	}, {
+		// Alcatel Lucent G-010S-A can operate at 2500base-X, but
+		// report 3.2GBd NRZ in their EEPROM
+		.vendor = "ALCATELLUCENT",
+		.part = "3FE46541AA",
+		.modes = sfp_quirk_2500basex,
+	}, {
+		// Huawei MA5671A can operate at 2500base-X, but report 1.2GBd
+		// NRZ in their EEPROM
+		.vendor = "HUAWEI",
+		.part = "MA5671A",
+		.modes = sfp_quirk_2500basex,
+	},
 };
 
 static size_t sfp_strlen(const char *str, size_t maxlen)