xref: /linux/Documentation/devicetree/bindings/net/qcom,ipq4019-mdio.yaml (revision 621cde16e49b3ecf7d59a8106a20aaebfb4a59a9)

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/qcom,ipq4019-mdio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm IPQ40xx MDIO Controller

maintainers:
  - Robert Marko <robert.marko@sartura.hr>

properties:
  compatible:
    oneOf:
      - enum:
          - qcom,ipq4019-mdio
          - qcom,ipq5018-mdio

      - items:
          - enum:
              - qcom,ipq6018-mdio
              - qcom,ipq8074-mdio
              - qcom,ipq9574-mdio
          - const: qcom,ipq4019-mdio

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

  reg:
    minItems: 1
    maxItems: 2
    description:
      the first Address and length of the register set for the MDIO controller.
      the second Address and length of the register for ethernet LDO, this second
      address range is only required by the platform IPQ50xx.

  clocks:
    items:
      - description: MDIO clock source frequency fixed to 100MHZ

  clock-names:
    items:
      - const: gcc_mdio_ahb_clk

  clock-frequency:
    description:
      The MDIO bus clock that must be output by the MDIO bus hardware, if
      absent, the default hardware values are used.

      MDC rate is feed by an external clock (fixed 100MHz) and is divider
      internally. The default divider is /256 resulting in the default rate
      applied of 390KHz.

      To follow 802.3 standard that instruct up to 2.5MHz by default, if
      this property is not declared and the divider is set to /256, by
      default 1.5625Mhz is select.
    enum: [ 390625, 781250, 1562500, 3125000, 6250000, 12500000 ]
    default: 1562500

required:
  - compatible
  - reg
  - "#address-cells"
  - "#size-cells"

allOf:
  - $ref: mdio.yaml#

  - if:
      properties:
        compatible:
          contains:
            enum:
              - qcom,ipq5018-mdio
              - qcom,ipq6018-mdio
              - qcom,ipq8074-mdio
              - qcom,ipq9574-mdio
    then:
      required:
        - clocks
        - clock-names
    else:
      properties:
        clocks: false
        clock-names: false

unevaluatedProperties: false

examples:
  - |
    mdio@90000 {
      #address-cells = <1>;
      #size-cells = <0>;
      compatible = "qcom,ipq4019-mdio";
      reg = <0x90000 0x64>;

      ethphy0: ethernet-phy@0 {
        reg = <0>;
      };

      ethphy1: ethernet-phy@1 {
        reg = <1>;
      };

      ethphy2: ethernet-phy@2 {
        reg = <2>;
      };

      ethphy3: ethernet-phy@3 {
        reg = <3>;
      };

      ethphy4: ethernet-phy@4 {
        reg = <4>;
      };
    };