1* Broadcom UniMAC MDIO bus controller 2 3Required properties: 4- compatible: should one from "brcm,genet-mdio-v1", "brcm,genet-mdio-v2", 5 "brcm,genet-mdio-v3", "brcm,genet-mdio-v4", "brcm,genet-mdio-v5" or 6 "brcm,unimac-mdio" 7- reg: address and length of the register set for the device, first one is the 8 base register, and the second one is optional and for indirect accesses to 9 larger than 16-bits MDIO transactions 10- reg-names: name(s) of the register must be "mdio" and optional "mdio_indir_rw" 11- #size-cells: must be 1 12- #address-cells: must be 0 13 14Optional properties: 15- interrupts: must be one if the interrupt is shared with the Ethernet MAC or 16 Ethernet switch this MDIO block is integrated from, or must be two, if there 17 are two separate interrupts, first one must be "mdio done" and second must be 18 for "mdio error" 19- interrupt-names: must be "mdio_done_error" when there is a share interrupt fed 20 to this hardware block, or must be "mdio_done" for the first interrupt and 21 "mdio_error" for the second when there are separate interrupts 22- clocks: A reference to the clock supplying the MDIO bus controller 23- clock-frequency: the MDIO bus clock that must be output by the MDIO bus 24 hardware, if absent, the default hardware values are used 25 26Child nodes of this MDIO bus controller node are standard Ethernet PHY device 27nodes as described in Documentation/devicetree/bindings/net/phy.txt 28 29Example: 30 31mdio@403c0 { 32 compatible = "brcm,unimac-mdio"; 33 reg = <0x403c0 0x8 0x40300 0x18>; 34 reg-names = "mdio", "mdio_indir_rw"; 35 #size-cells = <1>; 36 #address-cells = <0>; 37 38 ... 39 phy@0 { 40 compatible = "ethernet-phy-ieee802.3-c22"; 41 reg = <0>; 42 }; 43}; 44