[PATCH net-next v8 14/15] net: phy: dp83822: Add SFP support through the phy_port interface
From: Maxime Chevallier <maxime.chevallier@bootlin.com>
Date: 2025-07-10 13:46:02
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. 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 2657be2e9034..aa2c0085a900 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c@@ -979,6 +979,13 @@ static int dp83822_attach_port(struct phy_device *phydev, struct phy_port *port) } } + /* 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