From fc8f5aded1cf9f5505c55694b36174621c7ac88c Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Mon, 12 Nov 2012 17:03:47 +0100 Subject: net: mvmdio: new Marvell MDIO driver This patch adds a separate driver for the MDIO interface of the Marvell Ethernet controllers. There are two reasons to have a separate driver rather than including it inside the MAC driver itself: *) The MDIO interface is shared by all Ethernet ports, so a driver must guarantee non-concurrent accesses to this MDIO interface. The most logical way is to have a separate driver that handles this single MDIO interface, used by all Ethernet ports. *) The MDIO interface is the same between the existing mv643xx_eth driver and the new mvneta driver. Even though it is for now only used by the mvneta driver, it will in the future be used by the mv643xx_eth driver as well. Signed-off-by: Thomas Petazzoni Acked-by: David S. Miller --- .../devicetree/bindings/net/marvell-orion-mdio.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/marvell-orion-mdio.txt (limited to 'Documentation/devicetree/bindings/net') diff --git a/Documentation/devicetree/bindings/net/marvell-orion-mdio.txt b/Documentation/devicetree/bindings/net/marvell-orion-mdio.txt new file mode 100644 index 00000000000..34e7aafa321 --- /dev/null +++ b/Documentation/devicetree/bindings/net/marvell-orion-mdio.txt @@ -0,0 +1,35 @@ +* Marvell MDIO Ethernet Controller interface + +The Ethernet controllers of the Marvel Kirkwood, Dove, Orion5x, +MV78xx0, Armada 370 and Armada XP have an identical unit that provides +an interface with the MDIO bus. This driver handles this MDIO +interface. + +Required properties: +- compatible: "marvell,orion-mdio" +- reg: address and length of the SMI register + +The child nodes of the MDIO driver are the individual PHY devices +connected to this MDIO bus. They must have a "reg" property given the +PHY address on the MDIO bus. + +Example at the SoC level: + +mdio { + #address-cells = <1>; + #size-cells = <0>; + compatible = "marvell,orion-mdio"; + reg = <0xd0072004 0x4>; +}; + +And at the board level: + +mdio { + phy0: ethernet-phy@0 { + reg = <0>; + }; + + phy1: ethernet-phy@1 { + reg = <1>; + }; +} -- cgit v1.2.3