1 Properties for an MDIO bus multiplexer found in Broadcom iProc based SoCs.
2
3 This MDIO bus multiplexer defines buses that could be internal as well as
4 external to SoCs and could accept MDIO transaction compatible to C-22 or
5 C-45 Clause. When child bus is selected, one needs to select these two
6 properties as well to generate desired MDIO transaction on appropriate bus.
7
8 Required properties in addition to the generic multiplexer properties:
9
10 MDIO multiplexer node:
11 - compatible: brcm,mdio-mux-iproc.
12
13 Every non-ethernet PHY requires a compatible so that it could be probed based
14 on this compatible string.
15
16 Optional properties:
17 - clocks: phandle of the core clock which drives the mdio block.
18
19 Additional information regarding generic multiplexer properties can be found
20 at- Documentation/devicetree/bindings/net/mdio-mux.yaml
21
22
23 for 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 };
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