kernel/linux.git/drivers/net/mdio/Makefile, branch v6.19.11

net: mdio: Add MDIO bus controller for Airoha AN7583

2025-06-27T09:09:36+00:00

Airoha AN7583 SoC have 2 dedicated MDIO bus controller in the SCU register map. To driver register an MDIO controller based on the DT reg property and access the register by accessing the parent syscon. The MDIO bus logic is similar to the MT7530 internal MDIO bus but deviates of some setting and some HW bug. On Airoha AN7583 the MDIO clock is set to 25MHz by default and needs to be correctly setup to 2.5MHz to correctly work (by setting the divisor to 10x). There seems to be Hardware bug where AN7583_MII_RWDATA is not wiped in the context of unconnected PHY and the previous read value is returned. Example: (only one PHY on the BUS at 0x1f) - read at 0x1f report at 0x2 0x7500 - read at 0x0 report 0x7500 on every address To workaround this, we reset the Mdio BUS at every read to have consistent values on read operation. Signed-off-by: Christian Marangi Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: mdio: Add RTL9300 MDIO driver

2025-04-15T09:00:37+00:00

Add a driver for the MDIO controller on the RTL9300 family of Ethernet switches with integrated SoC. There are 4 physical SMI interfaces on the RTL9300 however access is done using the switch ports. The driver takes the MDIO bus hierarchy from the DTS and uses this to configure the switch ports so they are associated with the correct PHY. This mapping is also used when dealing with software requests from phylib. Signed-off-by: Chris Packham Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20250409231554.3943115-1-chris.packham@alliedtelesis.co.nz Signed-off-by: Paolo Abeni

net: mdio: Introduce a regmap-based mdio driver

2023-06-05T08:56:36+00:00

There exists several examples today of devices that embed an ethernet PHY or PCS directly inside an SoC. In this situation, either the device is controlled through a vendor-specific register set, or sometimes exposes the standard 802.3 registers that are typically accessed over MDIO. As phylib and phylink are designed to use mdiodevices, this driver allows creating a virtual MDIO bus, that translates mdiodev register accesses to regmap accesses. The reason we use regmap is because there are at least 3 such devices known today, 2 of them are Altera TSE PCS's, memory-mapped, exposed with a 4-byte stride in stmmac's dwmac-socfpga variant, and a 2-byte stride in altera-tse. The other one (nxp,sja1110-base-tx-mdio) is exposed over SPI. Signed-off-by: Maxime Chevallier Reviewed-by: Simon Horman Signed-off-by: David S. Miller

net: mdio: add amlogic gxl mdio mux support

2023-02-01T04:59:07+00:00

Add support for the mdio mux and internal phy glue of the GXL SoC family Reported-by: Da Xue Signed-off-by: Jerome Brunet Reviewed-by: Andrew Lunn Signed-off-by: Jakub Kicinski

net: mdio: Add ACPI support code for mdio

2021-06-11T20:08:53+00:00

Define acpi_mdiobus_register() to Register mii_bus and create PHYs for each ACPI child node. Signed-off-by: Calvin Johnson Signed-off-by: Ioana Ciornei Acked-by: Rafael J. Wysocki Acked-by: Grant Likely Signed-off-by: David S. Miller

net: mdiobus: Introduce fwnode_mdiobus_register_phy()

2021-06-11T20:08:53+00:00

Introduce fwnode_mdiobus_register_phy() to register PHYs on the mdiobus. From the compatible string, identify whether the PHY is c45 and based on this create a PHY device instance which is registered on the mdiobus. Along with fwnode_mdiobus_register_phy() also introduce fwnode_find_mii_timestamper() and fwnode_mdiobus_phy_device_register() since they are needed. While at it, also use the newly introduced fwnode operation in of_mdiobus_phy_device_register(). Signed-off-by: Calvin Johnson Signed-off-by: Ioana Ciornei Acked-by: Grant Likely Signed-off-by: David S. Miller

net: mdio: Add BCM6368 MDIO mux bus controller

2021-03-16T18:52:18+00:00

This controller is present on BCM6318, BCM6328, BCM6362, BCM6368 and BCM63268 SoCs. Signed-off-by: Álvaro Fernández Rojas Signed-off-by: David S. Miller

net: phy: Move of_mdio from drivers/of to drivers/net/mdio

2020-10-10T17:55:05+00:00

Better place for of_mdio.c is drivers/net/mdio. Move of_mdio.c from drivers/of to drivers/net/mdio Signed-off-by: Calvin Johnson Acked-by: Rob Herring Signed-off-by: Jakub Kicinski

net: mdio: Move MDIO drivers into a new subdirectory

2020-08-27T13:55:50+00:00

Move all the MDIO drivers and multiplexers into drivers/net/mdio. The mdio core is however left in the phy directory, due to mutual dependencies between the MDIO core and the PHY core. Take this opportunity to sort the Kconfig based on the menuconfig strings, and move the multiplexers to the end with a separating comment. v2: Fix typo in commit message Acked-by: Florian Fainelli Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller