Add support for an MDIO bus multiplexer controlled by a regmap device, like an FPGA.
This driver is an extension of the existing driver drivers/net/phy/mdio-mux-mmioreg.c. The problem with mmioreg driver is that it can operate only on memory mapped devices. but if we have a device that controls mdio muxing and that device is controlled using i2c or spi, then it will not work. Therefore, added a driver that uses regmap device to control mdio mux. Tested on a NXP LX2160AQDS board which uses the "QIXIS" FPGA attached to the i2c bus. Cc: Varun Sethi <v.se...@nxp.com> Pankaj Bansal (2): dt-bindings: net: add MDIO bus multiplexer driven by a regmap device netdev/phy: add MDIO bus multiplexer driven by a regmap .../bindings/net/mdio-mux-regmap.txt | 95 ++++++++++ drivers/net/phy/Kconfig | 13 ++ drivers/net/phy/Makefile | 1 + drivers/net/phy/mdio-mux-regmap.c | 171 ++++++++++++++++++ 4 files changed, 280 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/mdio-mux-regmap.txt create mode 100644 drivers/net/phy/mdio-mux-regmap.c -- 2.17.1
