1* Marvell MDIO Ethernet Controller interface 2 3The Ethernet controllers of the Marvel Kirkwood, Dove, Orion5x, 4MV78xx0, Armada 370, Armada XP, Armada 7k and Armada 8k have an 5identical unit that provides an interface with the MDIO bus. 6Additionally, Armada 7k and Armada 8k has a second unit which 7provides an interface with the xMDIO bus. This driver handles 8these interfaces. 9 10Required properties: 11- compatible: "marvell,orion-mdio" or "marvell,xmdio" 12- reg: address and length of the MDIO registers. When an interrupt is 13 not present, the length is the size of the SMI register (4 bytes) 14 otherwise it must be 0x84 bytes to cover the interrupt control 15 registers. 16 17Optional properties: 18- interrupts: interrupt line number for the SMI error/done interrupt 19- clocks: phandle for up to four required clocks for the MDIO instance 20 21The child nodes of the MDIO driver are the individual PHY devices 22connected to this MDIO bus. They must have a "reg" property given the 23PHY address on the MDIO bus. 24 25Example at the SoC level without an interrupt property: 26 27mdio { 28 #address-cells = <1>; 29 #size-cells = <0>; 30 compatible = "marvell,orion-mdio"; 31 reg = <0xd0072004 0x4>; 32}; 33 34Example with an interrupt property: 35 36mdio { 37 #address-cells = <1>; 38 #size-cells = <0>; 39 compatible = "marvell,orion-mdio"; 40 reg = <0xd0072004 0x84>; 41 interrupts = <30>; 42}; 43 44And at the board level: 45 46mdio { 47 phy0: ethernet-phy@0 { 48 reg = <0>; 49 }; 50 51 phy1: ethernet-phy@1 { 52 reg = <1>; 53 }; 54} 55