[PATCH net-next v19 14/15] net: phy: dp83822: Add SFP support through the phy_port interface
From: Maxime Chevallier <maxime.chevallier@bootlin.com>
Date: 2025-11-22 12:44:15
Also in:
linux-arm-kernel, linux-arm-msm, linux-devicetree, lkml
Subsystem:
ethernet phy library, networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The DP83822 can support 100BaseFX. This mode was only accessible through custom DT properties, but there also exist SFP modules that support these modes. As this only requires setting the relevant supported interface in the driver, expose the port capability with the new phy_port API, allowing SFP support. Reviewed-by: Christophe Leroy <redacted> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Christophe Leroy <redacted> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> --- drivers/net/phy/dp83822.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index c012dfab3171..f31b6d974d22 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c@@ -979,6 +979,13 @@ static int dp83822_attach_mdi_port(struct phy_device *phydev, } } + /* If attached from SFP, is_mii is set, but not the mediums. */ + if (port->is_mii) + dp83822->fx_enabled = true; + + if (dp83822->fx_enabled) + __set_bit(PHY_INTERFACE_MODE_100BASEX, port->interfaces); + return 0; }
--
2.49.0