xref: /openbmc/linux/Documentation/devicetree/bindings/net/mdio-mux-multiplexer.yaml (revision 762f99f4f3cb41a775b5157dd761217beba65873)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/mdio-mux-multiplexer.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Properties for an MDIO bus multiplexer consumer device

maintainers:
  - Andrew Lunn <andrew@lunn.ch>

description: |+
  This is a special case of MDIO mux when MDIO mux is defined as a consumer
  of a mux producer device. The mux producer can be of any type like mmio mux
  producer, gpio mux producer or generic register based mux producer.


allOf:
  - $ref: /schemas/net/mdio-mux.yaml#

properties:
  compatible:
    const: mdio-mux-multiplexer

  mux-controls:
    maxItems: 1

required:
  - compatible
  - mux-controls

unevaluatedProperties: false

examples:
  - |
    mux: mux-controller { // Mux Producer
        compatible = "reg-mux";
        #mux-control-cells = <1>;
        mux-reg-masks = <0x54 0xf8>, /* 0: reg 0x54, bits 7:3 */
                        <0x54 0x07>; /* 1: reg 0x54, bits 2:0 */
    };

    mdio-mux-1 { // Mux consumer
        compatible = "mdio-mux-multiplexer";
        mux-controls = <&mux 0>;
        mdio-parent-bus = <&emdio1>;
        #address-cells = <1>;
        #size-cells = <0>;

        mdio@0 {
            reg = <0x0>;
            #address-cells = <1>;
            #size-cells = <0>;
        };

        mdio@8 {
            reg = <0x8>;
            #address-cells = <1>;
            #size-cells = <0>;
        };
    };

    mdio-mux-2 { // Mux consumer
        compatible = "mdio-mux-multiplexer";
        mux-controls = <&mux 1>;
        mdio-parent-bus = <&emdio2>;
        #address-cells = <1>;
        #size-cells = <0>;

        mdio@0 {
            reg = <0x0>;
            #address-cells = <1>;
            #size-cells = <0>;
        };

        mdio@1 {
            reg = <0x1>;
            #address-cells = <1>;
            #size-cells = <0>;
        };
    };
...