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67e3ba9783
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 <ansuelsmth@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
289 lines
9 KiB
Text
289 lines
9 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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#
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# MDIO Layer Configuration
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#
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config MDIO_BUS
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tristate "MDIO bus consumer layer"
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help
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MDIO bus consumer layer
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if PHYLIB
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config FWNODE_MDIO
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def_tristate (ACPI || OF) || COMPILE_TEST
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select FIXED_PHY
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help
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FWNODE MDIO bus (Ethernet PHY) accessors
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config OF_MDIO
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def_tristate OF
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select FIXED_PHY
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help
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OpenFirmware MDIO bus (Ethernet PHY) accessors
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config ACPI_MDIO
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def_tristate ACPI
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help
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ACPI MDIO bus (Ethernet PHY) accessors
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config MDIO_AIROHA
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tristate "Airoha AN7583 MDIO bus controller"
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depends on ARCH_AIROHA || COMPILE_TEST
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help
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This module provides a driver for the MDIO busses found in the
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Airoha AN7583 SoC's.
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config MDIO_SUN4I
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tristate "Allwinner sun4i MDIO interface support"
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depends on ARCH_SUNXI || COMPILE_TEST
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help
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This driver supports the MDIO interface found in the network
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interface units of the Allwinner SoC that have an EMAC (A10,
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A12, A10s, etc.)
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config MDIO_XGENE
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tristate "APM X-Gene SoC MDIO bus controller"
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depends on ARCH_XGENE || COMPILE_TEST
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help
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This module provides a driver for the MDIO busses found in the
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APM X-Gene SoC's.
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config MDIO_ASPEED
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tristate "ASPEED MDIO bus controller"
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depends on ARCH_ASPEED || COMPILE_TEST
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depends on OF_MDIO && HAS_IOMEM
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help
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This module provides a driver for the independent MDIO bus
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controllers found in the ASPEED AST2600 SoC. This is a driver for the
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third revision of the ASPEED MDIO register interface - the first two
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revisions are the "old" and "new" interfaces found in the AST2400 and
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AST2500, embedded in the MAC. For legacy reasons, FTGMAC100 driver
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continues to drive the embedded MDIO controller for the AST2400 and
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AST2500 SoCs, so say N if AST2600 support is not required.
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config MDIO_BITBANG
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tristate "Bitbanged MDIO buses"
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help
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This module implements the MDIO bus protocol in software,
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for use by low level drivers that export the ability to
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drive the relevant pins.
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If in doubt, say N.
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config MDIO_BCM_IPROC
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tristate "Broadcom iProc MDIO bus controller"
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depends on ARCH_BCM_IPROC || COMPILE_TEST
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depends on HAS_IOMEM && OF_MDIO
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default ARCH_BCM_IPROC
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help
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This module provides a driver for the MDIO busses found in the
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Broadcom iProc SoC's.
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config MDIO_BCM_UNIMAC
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tristate "Broadcom UniMAC MDIO bus controller"
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depends on HAS_IOMEM
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help
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This module provides a driver for the Broadcom UniMAC MDIO busses.
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This hardware can be found in the Broadcom GENET Ethernet MAC
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controllers as well as some Broadcom Ethernet switches such as the
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Starfighter 2 switches.
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config MDIO_CAVIUM
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tristate
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config MDIO_GPIO
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tristate "GPIO lib-based bitbanged MDIO buses"
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depends on MDIO_BITBANG
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depends on GPIOLIB || COMPILE_TEST
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help
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Supports GPIO lib-based MDIO busses.
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To compile this driver as a module, choose M here: the module
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will be called mdio-gpio.
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config MDIO_HISI_FEMAC
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tristate "Hisilicon FEMAC MDIO bus controller"
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depends on HAS_IOMEM && OF_MDIO
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help
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This module provides a driver for the MDIO busses found in the
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Hisilicon SoC that have an Fast Ethernet MAC.
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config MDIO_I2C
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tristate
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depends on I2C
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help
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Support I2C based PHYs. This provides a MDIO bus bridged
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to I2C to allow PHYs connected in I2C mode to be accessed
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using the existing infrastructure.
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This is library mode.
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config MDIO_MVUSB
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tristate "Marvell USB to MDIO Adapter"
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depends on USB
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help
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A USB to MDIO converter present on development boards for
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Marvell's Link Street family of Ethernet switches.
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config MDIO_MSCC_MIIM
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tristate "Microsemi MIIM interface support"
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depends on HAS_IOMEM && REGMAP_MMIO
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help
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This driver supports the MIIM (MDIO) interface found in the network
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switches of the Microsemi SoCs; it is recommended to switch on
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CONFIG_HIGH_RES_TIMERS
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config MDIO_MOXART
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tristate "MOXA ART MDIO interface support"
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depends on ARCH_MOXART || COMPILE_TEST
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help
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This driver supports the MDIO interface found in the network
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interface units of the MOXA ART SoC
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config MDIO_OCTEON
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tristate "Octeon and some ThunderX SOCs MDIO buses"
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depends on (64BIT && OF_MDIO) || COMPILE_TEST
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depends on HAS_IOMEM
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select MDIO_CAVIUM
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help
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This module provides a driver for the Octeon and ThunderX MDIO
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buses. It is required by the Octeon and ThunderX ethernet device
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drivers on some systems.
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config MDIO_IPQ4019
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tristate "Qualcomm IPQ4019 MDIO interface support"
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depends on HAS_IOMEM && OF_MDIO
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depends on COMMON_CLK
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help
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This driver supports the MDIO interface found in Qualcomm
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IPQ40xx, IPQ60xx, IPQ807x and IPQ50xx series Soc-s.
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config MDIO_IPQ8064
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tristate "Qualcomm IPQ8064 MDIO interface support"
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depends on HAS_IOMEM && OF_MDIO
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depends on MFD_SYSCON
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help
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This driver supports the MDIO interface found in the network
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interface units of the IPQ8064 SoC
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config MDIO_REALTEK_RTL9300
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tristate "Realtek RTL9300 MDIO interface support"
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depends on MACH_REALTEK_RTL || COMPILE_TEST
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help
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This driver supports the MDIO interface found in the Realtek
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RTL9300 family of Ethernet switches with integrated SoC.
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config MDIO_REGMAP
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tristate
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help
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This driver allows using MDIO devices that are not sitting on a
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regular MDIO bus, but still exposes the standard 802.3 register
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layout. It's regmap-based so that it can be used on integrated,
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memory-mapped PHYs, SPI PHYs and so on. A new virtual MDIO bus is
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created, and its read/write operations are mapped to the underlying
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regmap. Users willing to use this driver must explicitly select
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REGMAP.
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config MDIO_THUNDER
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tristate "ThunderX SOCs MDIO buses"
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depends on 64BIT
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depends on PCI
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select MDIO_CAVIUM
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help
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This driver supports the MDIO interfaces found on Cavium
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ThunderX SoCs when the MDIO bus device appears as a PCI
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device.
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comment "MDIO Multiplexers"
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config MDIO_BUS_MUX
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tristate
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depends on OF_MDIO
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help
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This module provides a driver framework for MDIO bus
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multiplexers which connect one of several child MDIO busses
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to a parent bus. Switching between child busses is done by
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device specific drivers.
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config MDIO_BUS_MUX_MESON_G12A
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tristate "Amlogic G12a based MDIO bus multiplexer"
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depends on ARCH_MESON || COMPILE_TEST
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depends on OF_MDIO && HAS_IOMEM && COMMON_CLK
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select MDIO_BUS_MUX
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default m if ARCH_MESON
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help
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This module provides a driver for the MDIO multiplexer/glue of
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the amlogic g12a SoC. The multiplexers connects either the external
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or the internal MDIO bus to the parent bus.
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config MDIO_BUS_MUX_MESON_GXL
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tristate "Amlogic GXL based MDIO bus multiplexer"
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depends on ARCH_MESON || COMPILE_TEST
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depends on OF_MDIO && HAS_IOMEM && COMMON_CLK
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select MDIO_BUS_MUX
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default m if ARCH_MESON
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help
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This module provides a driver for the MDIO multiplexer/glue of
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the amlogic GXL SoC. The multiplexer connects either the external
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or the internal MDIO bus to the parent bus.
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config MDIO_BUS_MUX_BCM6368
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tristate "Broadcom BCM6368 MDIO bus multiplexers"
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depends on OF && OF_MDIO && (BMIPS_GENERIC || COMPILE_TEST)
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select MDIO_BUS_MUX
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default BMIPS_GENERIC
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help
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This module provides a driver for MDIO bus multiplexers found in
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BCM6368 based Broadcom SoCs. This multiplexer connects one of several
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child MDIO bus to a parent bus. Buses could be internal as well as
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external and selection logic lies inside the same multiplexer.
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config MDIO_BUS_MUX_BCM_IPROC
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tristate "Broadcom iProc based MDIO bus multiplexers"
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depends on OF && OF_MDIO && (ARCH_BCM_IPROC || COMPILE_TEST)
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select MDIO_BUS_MUX
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default ARCH_BCM_IPROC
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help
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This module provides a driver for MDIO bus multiplexers found in
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iProc based Broadcom SoCs. This multiplexer connects one of several
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child MDIO bus to a parent bus. Buses could be internal as well as
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external and selection logic lies inside the same multiplexer.
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config MDIO_BUS_MUX_GPIO
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tristate "GPIO controlled MDIO bus multiplexers"
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depends on OF_GPIO && OF_MDIO
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select MDIO_BUS_MUX
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help
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This module provides a driver for MDIO bus multiplexers that
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are controlled via GPIO lines. The multiplexer connects one of
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several child MDIO busses to a parent bus. Child bus
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selection is under the control of GPIO lines.
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config MDIO_BUS_MUX_MULTIPLEXER
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tristate "MDIO bus multiplexer using kernel multiplexer subsystem"
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depends on OF_MDIO
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select MULTIPLEXER
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select MDIO_BUS_MUX
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help
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This module provides a driver for MDIO bus multiplexer
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that is controlled via the kernel multiplexer subsystem. The
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bus multiplexer connects one of several child MDIO busses to
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a parent bus. Child bus selection is under the control of
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the kernel multiplexer subsystem.
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config MDIO_BUS_MUX_MMIOREG
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tristate "MMIO device-controlled MDIO bus multiplexers"
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depends on OF_MDIO && HAS_IOMEM
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select MDIO_BUS_MUX
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help
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This module provides a driver for MDIO bus multiplexers that
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are controlled via a simple memory-mapped device, like an FPGA.
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The multiplexer connects one of several child MDIO busses to a
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parent bus. Child bus selection is under the control of one of
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the FPGA's registers.
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Currently, only 8/16/32 bits registers are supported.
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endif
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