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Documentation / devicetree / bindings / net / cavium-mdio.txt




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Based on kernel version 4.8. Page generated on 2016-10-06 23:13 EST.

1	* System Management Interface (SMI) / MDIO
2	
3	Properties:
4	- compatible: One of:
5	
6	   "cavium,octeon-3860-mdio": Compatibility with all cn3XXX, cn5XXX
7	                       and cn6XXX SOCs.
8	
9	   "cavium,thunder-8890-mdio": Compatibility with all cn8XXX SOCs.
10	
11	- reg: The base address of the MDIO bus controller register bank.
12	
13	- #address-cells: Must be <1>.
14	
15	- #size-cells: Must be <0>.  MDIO addresses have no size component.
16	
17	Typically an MDIO bus might have several children.
18	
19	Example:
20		mdio@1180000001800 {
21			compatible = "cavium,octeon-3860-mdio";
22			#address-cells = <1>;
23			#size-cells = <0>;
24			reg = <0x11800 0x00001800 0x0 0x40>;
25	
26			ethernet-phy@0 {
27				...
28				reg = <0>;
29			};
30		};
31	
32	
33	* System Management Interface (SMI) / MDIO Nexus
34	
35	  Several mdio buses may be gathered as children of a single PCI
36	  device, this PCI device is the nexus of the buses.
37	
38	Properties:
39	
40	- compatible: "cavium,thunder-8890-mdio-nexus";
41	
42	- reg: The PCI device and function numbers of the nexus device.
43	
44	- #address-cells: Must be <2>.
45	
46	- #size-cells: Must be <2>.
47	
48	- ranges: As needed for mapping of the MDIO bus device registers.
49	
50	- assigned-addresses: As needed for mapping of the MDIO bus device registers.
51	
52	Example:
53	
54	        mdio-nexus@1,3 {
55	                compatible = "cavium,thunder-8890-mdio-nexus";
56	                #address-cells = <2>;
57	                #size-cells = <2>;
58	                reg = <0x0b00 0 0 0 0>; /* DEVFN = 0x0b (1:3) */
59	                assigned-addresses = <0x03000000 0x87e0 0x05000000 0x0 0x800000>;
60	                ranges = <0x87e0 0x05000000 0x03000000 0x87e0 0x05000000 0x0 0x800000>;
61	
62	                mdio0@87e0,05003800 {
63	                        compatible = "cavium,thunder-8890-mdio";
64	                        #address-cells = <1>;
65	                        #size-cells = <0>;
66	                        reg = <0x87e0 0x05003800 0x0 0x30>;
67	
68	                        ethernet-phy@0 {
69	                                ...
70	                                reg = <0>;
71	                        };
72	                };
73	                mdio0@87e0,05003880 {
74	                        compatible = "cavium,thunder-8890-mdio";
75	                        #address-cells = <1>;
76	                        #size-cells = <0>;
77	                        reg = <0x87e0 0x05003880 0x0 0x30>;
78	
79	                        ethernet-phy@0 {
80	                                ...
81	                                reg = <0>;
82	                        };
83	                };
84	        };
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