Documentation/devicetree/bindings/net/brcm,mdio-mux-iproc.txt

   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 Additional information regarding generic multiplexer properties can be found
  17 at- Documentation/devicetree/bindings/net/mdio-mux.txt
  18
  19
  20 for example:
  21                 mdio_mux_iproc: mdio-mux@66020000 {
  22                         compatible = "brcm,mdio-mux-iproc";
  23                         reg = <0x66020000 0x250>;
  24                         #address-cells = <1>;
  25                         #size-cells = <0>;
  26
  27                         mdio@0 {
  28                                 reg = <0x0>;
  29                                 #address-cells = <1>;
  30                                 #size-cells = <0>;
  31
  32                                 pci_phy0: pci-phy@0 {
  33                                         compatible = "brcm,ns2-pcie-phy";
  34                                         reg = <0x0>;
  35                                         #phy-cells = <0>;
  36                                 };
  37                         };
  38
  39                         mdio@7 {
  40                                 reg = <0x7>;
  41                                 #address-cells = <1>;
  42                                 #size-cells = <0>;
  43
  44                                 pci_phy1: pci-phy@0 {
  45                                         compatible = "brcm,ns2-pcie-phy";
  46                                         reg = <0x0>;
  47                                         #phy-cells = <0>;
  48                                 };
  49                         };
  50                         mdio@10 {
  51                                 reg = <0x10>;
  52                                 #address-cells = <1>;
  53                                 #size-cells = <0>;
  54
  55                                 gphy0: eth-phy@10 {
  56                                         reg = <0x10>;
  57                                 };
  58                         };
  59                 };