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| author |   Russell King <rmk+kernel@arm.linux.org.uk> | 2017-07-25 15:03:08 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-08-06 20:55:28 -0700 |
| commit | 453d00defba502a48e3f9a218a519b233ff83d16 (patch) | |
| tree | 399004eb51b90393cd31c2ab03474bbb63a5bc24 /drivers/net/phy/Kconfig | |
| parent | net: phy: export phy_start_machine() for phylink (diff) | |
| download | linux-dev-453d00defba502a48e3f9a218a519b233ff83d16.tar.xz linux-dev-453d00defba502a48e3f9a218a519b233ff83d16.zip | |
net: phy: add I2C mdio bus
Add an I2C MDIO bus bridge library, to allow phylib to access PHYs which
are connected to an I2C bus instead of the more conventional MDIO bus.
Such PHYs can be found in SFP adapters and SFF modules.
Since PHYs appear at I2C bus address 0x40..0x5f, and 0x50/0x51 are
reserved for SFP EEPROMs/diagnostics, we must not allow the MDIO bus
to access these I2C addresses.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/Kconfig')
| -rw-r--r-- | drivers/net/phy/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 928fd892f167..a1d6fdba8980 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -106,6 +106,16 @@ config MDIO_HISI_FEMAC This module provides a driver for the MDIO busses found in the Hisilicon SoC that have an Fast Ethernet MAC. +config MDIO_I2C + tristate + depends on I2C + help + Support I2C based PHYs. This provides a MDIO bus bridged + to I2C to allow PHYs connected in I2C mode to be accessed + using the existing infrastructure. + + This is library mode. + config MDIO_MOXART tristate "MOXA ART MDIO interface support" depends on ARCH_MOXART |