lwn.git/drivers/net/phy/dp83822.c, branch docs-mw

net: phy: dp83822: Add support for phy_port representation

2026-01-14T02:52:34+00:00

With the phy_port representation introduced, we can use .attach_port to populate the port information based on either the straps or the ti,fiber-mode property. This allows simplifying the probe function and allow users to override the strapping configuration. Reviewed-by: Christophe Leroy Reviewed-by: Andrew Lunn Tested-by: Christophe Leroy Signed-off-by: Maxime Chevallier Link: https://patch.msgid.link/20260108080041.553250-5-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski

net: phy: simplify phy_get_internal_delay()

2025-06-13T01:23:54+00:00

Simplify the arguments passed to phy_get_internal_delay() - the "dev" argument is always &phydev->mdio.dev, and as the phydev is passed in, there's no need to also pass in the struct device, especially when this function is the only reason for the caller to have a local "dev" variable. Remove the redundant "dev" argument, and update the callers. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Reviewed-by: Jacob Keller Link: https://patch.msgid.link/E1uPLwB-003VzR-4C@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-04-24T18:20:52+00:00

Cross-merge networking fixes after downstream PR (net-6.15-rc4). This pull includes wireless and a fix to vxlan which isn't in Linus's tree just yet. The latter creates with a silent conflict / build breakage, so merging it now to avoid causing problems. drivers/net/vxlan/vxlan_vnifilter.c 094adad91310 ("vxlan: Use a single lock to protect the FDB table") 087a9eb9e597 ("vxlan: vnifilter: Fix unlocked deletion of default FDB entry") https://lore.kernel.org/20250423145131.513029-1-idosch@nvidia.com No "normal" conflicts, or adjacent changes. Signed-off-by: Jakub Kicinski

net: dp83822: Fix OF_MDIO config check

2025-04-24T09:19:35+00:00

When CONFIG_OF_MDIO is set to be a module the code block is not compiled. Use the IS_ENABLED macro that checks for both built in as well as module. Fixes: 5dc39fd5ef35 ("net: phy: DP83822: Add ability to advertise Fiber connection") Signed-off-by: Johannes Schneider Reviewed-by: Maxime Chevallier Link: https://patch.msgid.link/20250423044724.1284492-1-johannes.schneider@leica-geosystems.com Signed-off-by: Paolo Abeni

net: phy: dp83822: Add support for changing the MAC termination

2025-04-23T00:49:48+00:00

The dp83822 provides the possibility to set the resistance value of the the MAC termination. Modifying the resistance to an appropriate value can reduce signal reflections and therefore improve signal quality. Reviewed-by: Russell King (Oracle) Signed-off-by: Dimitri Fedrau Link: https://patch.msgid.link/20250416-dp83822-mac-impedance-v3-4-028ac426cddb@liebherr.com Signed-off-by: Jakub Kicinski

net: phy: dp83822: fix transmit amplitude if CONFIG_OF_MDIO not defined

2025-03-24T16:52:36+00:00

When CONFIG_OF_MDIO is not defined the index for selecting the transmit amplitude voltage for 100BASE-TX is set to 0, but it should be -1, if there is no need to modify the transmit amplitude voltage. Move initialization of the index from dp83822_of_init to dp8382x_probe. Fixes: 4f3735e82d8a ("net: phy: dp83822: Add support for changing the transmit amplitude voltage") Reviewed-by: Gerhard Engleder Signed-off-by: Dimitri Fedrau Link: https://patch.msgid.link/20250317-dp83822-fix-transceiver-mdio-v2-1-fb09454099a4@liebherr.com Signed-off-by: Jakub Kicinski

net: phy: dp83822: Add support for changing the transmit amplitude voltage

2025-02-18T00:40:42+00:00

Add support for changing the transmit amplitude voltage in 100BASE-TX mode. Modifying it can be necessary to compensate losses on the PCB and connector, so the voltages measured on the RJ45 pins are conforming. Signed-off-by: Dimitri Fedrau Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20250214-dp83822-tx-swing-v5-3-02ca72620599@liebherr.com Signed-off-by: Jakub Kicinski

net: phy: Constify struct mdio_device_id

2025-01-14T23:01:32+00:00

'struct mdio_device_id' is not modified in these drivers. Constifying these structures moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 27014 12792 0 39806 9b7e drivers/net/phy/broadcom.o After: ===== text data bss dec hex filename 27206 12600 0 39806 9b7e drivers/net/phy/broadcom.o Signed-off-by: Christophe JAILLET Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/403c381b7d9156b67ad68ffc44b8eee70c5e86a9.1736691226.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski

net: phy: dp83822: Fix typo "outout" -> "output"

2025-01-14T21:25:12+00:00

There is a typo in a phydev_err message. Fix it. Signed-off-by: Colin Ian King Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20250113091555.23594-1-colin.i.king@gmail.com Signed-off-by: Jakub Kicinski

net: phy: dp83822: Add support for PHY LEDs on DP83822

2025-01-11T21:08:27+00:00

The DP83822 supports up to three configurable Light Emitting Diode (LED) pins: LED_0, LED_1 (GPIO1), COL (GPIO2) and RX_D3 (GPIO3). Several functions can be multiplexed onto the LEDs for different modes of operation. LED_0 and COL (GPIO2) use the MLED function. MLED can be routed to only one of these two pins at a time. Add minimal LED controller driver supporting the most common uses with the 'netdev' trigger. Signed-off-by: Dimitri Fedrau Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20250107-dp83822-leds-v2-1-5b260aad874f@gmail.com Signed-off-by: Jakub Kicinski