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Documentation / devicetree / bindings / net / marvell-orion-mdio.txt




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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:55 EST.

1	* Marvell MDIO Ethernet Controller interface
2	
3	The Ethernet controllers of the Marvel Kirkwood, Dove, Orion5x,
4	MV78xx0, Armada 370, Armada XP, Armada 7k and Armada 8k have an
5	identical unit that provides an interface with the MDIO bus.
6	Additionally, Armada 7k and Armada 8k has a second unit which
7	provides an interface with the xMDIO bus. This driver handles
8	these interfaces.
9	
10	Required 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	
17	Optional properties:
18	- interrupts: interrupt line number for the SMI error/done interrupt
19	- clocks: phandle for up to three required clocks for the MDIO instance
20	
21	The child nodes of the MDIO driver are the individual PHY devices
22	connected to this MDIO bus. They must have a "reg" property given the
23	PHY address on the MDIO bus.
24	
25	Example at the SoC level without an interrupt property:
26	
27	mdio {
28		#address-cells = <1>;
29		#size-cells = <0>;
30		compatible = "marvell,orion-mdio";
31		reg = <0xd0072004 0x4>;
32	};
33	
34	Example with an interrupt property:
35	
36	mdio {
37		#address-cells = <1>;
38		#size-cells = <0>;
39		compatible = "marvell,orion-mdio";
40		reg = <0xd0072004 0x84>;
41		interrupts = <30>;
42	};
43	
44	And at the board level:
45	
46	mdio {
47		phy0: ethernet-phy@0 {
48			reg = <0>;
49		};
50	
51		phy1: ethernet-phy@1 {
52			reg = <1>;
53		};
54	}
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