kernel/linux.git/include/linux/phy.h, branch v7.3-rc1

net: phy: c45: add genphy_c45_pma_soft_reset()

2026-08-01T01:22:48+00:00

Add a generic Clause 45 software reset helper. The helper sets the reset bit in the PMA/PMD control register and waits until the bit is cleared by hardware. Reviewed-by: Maxime Chevallier Reviewed-by: Nicolai Buchwitz Signed-off-by: Javen Xu Link: https://patch.msgid.link/20260728073106.1515-2-javen_xu@realsil.com.cn Signed-off-by: Jakub Kicinski

net: phy: add generic helpers for direct C45 MMD access

2026-07-21T08:53:24+00:00

Some PHYs support direct C45 register access but not C22 indirect MMD access (registers 0xD and 0xE). When discovered via C22, phylib routes MMD access through the indirect path, which won't work on these devices. Add genphy_read_mmd_c45() and genphy_write_mmd_c45() as read_mmd/ write_mmd callbacks that bypass the C22 indirect path and use the bus C45 accessors directly. Reviewed-by: Andrew Lunn Signed-off-by: Ciprian Regus Link: https://patch.msgid.link/20260708-adin1140-driver-v5-10-4aca7b51a58b@analog.com Signed-off-by: Paolo Abeni

net: phy: at803x: Use a helper to check for phy reset existence

2026-07-17T13:43:32+00:00

The at803x family of devices are subjected to an errata that requires hard-reseting the PHY upon link change. That can only work if there's a physical reset line wired to the PHY, which the driver checks by looking if there's a reset GPIO configured for the MDIO device. The reset may however be controlled through a reset controller, which isn't accounted for in the errata handling. Besides that, PHY drivers aren't expected to directly access the mdiodev's resources directly, let's therefore wrap this with a phylib helper, that uses a similar mdio helper to check for reset existence. This was found in preparation for bus-level resource management for better mdio scan support. Signed-off-by: Maxime Chevallier Reviewed-by: Andrew Lunn Reviewed-by: Nicolai Buchwitz Link: https://patch.msgid.link/20260715101355.88536-1-maxime.chevallier@bootlin.com Signed-off-by: Paolo Abeni

Replace by more specific (headers)

2026-07-03T05:38:16+00:00

is included in a many files: $ git grep '' ef0c9f75a195 | wc -l 1598 ; some of them are widely used headers. To stop mixing up different and unrelated driver( type)s let the subsystem headers only use the subset of the recently split that are relevant for them. The fallout (I hope) is addressed in the previous commits that handle sources relying on e.g. pulling in the full legacy header and thus providing pci_device_id. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Link: https://patch.msgid.link/199fe46b624ba07fb9bd3e0cd6ff13757932cb5f.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

net: phy: add support for disabling PHY-autonomous EEE

2026-04-12T18:33:23+00:00

Some PHYs (e.g. Broadcom BCM54xx, Realtek RTL8211F) implement autonomous EEE where the PHY manages LPI signaling without forwarding it to the MAC. This conflicts with MAC drivers that implement their own LPI control. Add a .disable_autonomous_eee callback to struct phy_driver and call it from phy_support_eee(). When a MAC driver indicates it supports EEE via phy_support_eee(), the PHY's autonomous EEE is automatically disabled so the MAC can manage LPI entry/exit. Signed-off-by: Nicolai Buchwitz Link: https://patch.msgid.link/20260406-devel-autonomous-eee-v1-1-b335e7143711@tipi-net.de Signed-off-by: Jakub Kicinski

net: phy: move remaining provider code to mdio_bus_provider.c

2026-03-14T19:23:02+00:00

This moves definition of mdio_bus class and bus_type to the provider side, what allows to make them private to libphy. As a prerequisite MDIO statistics handling is moved to the provider side as well. Note: This patch causes a checkpatch error "Macros with complex values should be enclosed in parentheses" for MDIO_BUS_STATS_ADDR_ATTR_GROUP. I consider this a false positive here, in addition the patch just moves existing code. Signed-off-by: Heiner Kallweit Link: https://patch.msgid.link/47b85676-b349-4aa0-a5ef-cd37769a4c69@gmail.com Signed-off-by: Jakub Kicinski

net: phy: remove phy_attach

2026-03-07T00:47:56+00:00

378e6523ebb1 ("net: bcmgenet: remove unused platform code") removed the last user of phy_attach(). So remove this function. Signed-off-by: Heiner Kallweit Link: https://patch.msgid.link/8812176a-e319-4e9f-815d-99ea339df8b2@gmail.com Signed-off-by: Jakub Kicinski

net: phy: add a new phy_device flag to keep preamble before sfd

2026-01-23T02:27:32+00:00

Add a new flag, PHY_F_KEEP_PREAMBLE_BEFORE_SFD, to indicate that the PHY shall not remove the preamble before the SFD if it supports it. MACs that do not support receiving frames without a preamble can set this flag. Signed-off-by: Stefan Eichenberger Reviewed-by: Andrew Lunn Tested-by: Maxime Chevallier Reviewed-by: Maxime Chevallier Link: https://patch.msgid.link/20260120203905.23805-2-eichest@gmail.com Signed-off-by: Jakub Kicinski

net: phy: remove unused fixup unregistering functions

2026-01-16T03:48:26+00:00

No user of PHY fixups unregisters these. IOW: The fixup unregistering functions are unused and can be removed. Remove also documentation for these functions. Whilst at it, remove also mentioning of phy_register_fixup() from the Documentation, as this function has been static since ea47e70e476f ("net: phy: remove fixup-related definitions from phy.h which are not used outside phylib"). Fixup unregistering functions were added with f38e7a32ee4f ("phy: add phy fixup unregister functions") in 2016, and last user was removed with 6782d06a47ad ("net: usb: lan78xx: Remove KSZ9031 PHY fixup") in 2024. Signed-off-by: Heiner Kallweit Link: https://patch.msgid.link/ff8ac321-435c-48d0-b376-fbca80c0c22e@gmail.com Signed-off-by: Jakub Kicinski

net: phy: Only rely on phy_port for PHY-driven SFP

2026-01-14T02:52:35+00:00

Now that all PHY drivers that support downstream SFP have been converted to phy_port serdes handling, we can make the generic PHY SFP handling mandatory, thus making all phylib sfp helpers static. Reviewed-by: Christophe Leroy Reviewed-by: Andrew Lunn Tested-by: Christophe Leroy Signed-off-by: Maxime Chevallier Link: https://patch.msgid.link/20260108080041.553250-14-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski