1Properties for an MDIO bus multiplexer found in Broadcom iProc based SoCs.
2
3This MDIO bus multiplexer defines buses that could be internal as well as
4external to SoCs and could accept MDIO transaction compatible to C-22 or
5C-45 Clause. When child bus is selected, one needs to select these two
6properties as well to generate desired MDIO transaction on appropriate bus.
7
8Required properties in addition to the generic multiplexer properties:
9
10MDIO multiplexer node:
11- compatible: brcm,mdio-mux-iproc.
12
13Every non-ethernet PHY requires a compatible so that it could be probed based
14on this compatible string.
15
16Optional properties:
17- clocks: phandle of the core clock which drives the mdio block.
18
19Additional information regarding generic multiplexer properties can be found
20at- Documentation/devicetree/bindings/net/mdio-mux.yaml
21
22
23for example:
24		mdio_mux_iproc: mdio-mux@66020000 {
25			compatible = "brcm,mdio-mux-iproc";
26			reg = <0x66020000 0x250>;
27			#address-cells = <1>;
28			#size-cells = <0>;
29
30			mdio@0 {
31				reg = <0x0>;
32				#address-cells = <1>;
33				#size-cells = <0>;
34
35				pci_phy0: pci-phy@0 {
36					compatible = "brcm,ns2-pcie-phy";
37					reg = <0x0>;
38					#phy-cells = <0>;
39				};
40			};
41
42			mdio@7 {
43				reg = <0x7>;
44				#address-cells = <1>;
45				#size-cells = <0>;
46
47				pci_phy1: pci-phy@0 {
48					compatible = "brcm,ns2-pcie-phy";
49					reg = <0x0>;
50					#phy-cells = <0>;
51				};
52			};
53			mdio@10 {
54				reg = <0x10>;
55				#address-cells = <1>;
56				#size-cells = <0>;
57
58				gphy0: eth-phy@10 {
59					reg = <0x10>;
60				};
61			};
62		};
63