Florian Fainelli | 2ba1b16 | 2014-08-27 17:04:47 -0700 | [diff] [blame] | 1 | * Broadcom UniMAC MDIO bus controller |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible: should one from "brcm,genet-mdio-v1", "brcm,genet-mdio-v2", |
| 5 | "brcm,genet-mdio-v3", "brcm,genet-mdio-v4" or "brcm,unimac-mdio" |
| 6 | - reg: address and length of the regsiter set for the device, first one is the |
| 7 | base register, and the second one is optional and for indirect accesses to |
| 8 | larger than 16-bits MDIO transactions |
| 9 | - reg-names: name(s) of the register must be "mdio" and optional "mdio_indir_rw" |
| 10 | - #size-cells: must be 1 |
| 11 | - #address-cells: must be 0 |
| 12 | |
| 13 | Optional properties: |
| 14 | - interrupts: must be one if the interrupt is shared with the Ethernet MAC or |
| 15 | Ethernet switch this MDIO block is integrated from, or must be two, if there |
| 16 | are two separate interrupts, first one must be "mdio done" and second must be |
| 17 | for "mdio error" |
| 18 | - interrupt-names: must be "mdio_done_error" when there is a share interrupt fed |
| 19 | to this hardware block, or must be "mdio_done" for the first interrupt and |
| 20 | "mdio_error" for the second when there are separate interrupts |
| 21 | |
| 22 | Child nodes of this MDIO bus controller node are standard Ethernet PHY device |
| 23 | nodes as described in Documentation/devicetree/bindings/net/phy.txt |
| 24 | |
| 25 | Example: |
| 26 | |
| 27 | mdio@403c0 { |
| 28 | compatible = "brcm,unimac-mdio"; |
| 29 | reg = <0x403c0 0x8 0x40300 0x18>; |
| 30 | reg-names = "mdio", "mdio_indir_rw"; |
| 31 | #size-cells = <1>; |
| 32 | #address-cells = <0>; |
| 33 | |
| 34 | ... |
| 35 | phy@0 { |
| 36 | compatible = "ethernet-phy-ieee802.3-c22"; |
| 37 | reg = <0>; |
| 38 | }; |
| 39 | }; |