xref: /linux/Documentation/devicetree/bindings/net/qcom,ipq4019-mdio.yaml (revision 55d0969c451159cff86949b38c39171cab962069) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/qcom,ipq4019-mdio.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Qualcomm IPQ40xx MDIO Controller
8
9maintainers:
10  - Robert Marko <robert.marko@sartura.hr>
11
12properties:
13  compatible:
14    oneOf:
15      - enum:
16          - qcom,ipq4019-mdio
17          - qcom,ipq5018-mdio
18
19      - items:
20          - enum:
21              - qcom,ipq6018-mdio
22              - qcom,ipq8074-mdio
23              - qcom,ipq9574-mdio
24          - const: qcom,ipq4019-mdio
25
26  "#address-cells":
27    const: 1
28
29  "#size-cells":
30    const: 0
31
32  reg:
33    minItems: 1
34    maxItems: 2
35    description:
36      the first Address and length of the register set for the MDIO controller.
37      the second Address and length of the register for ethernet LDO, this second
38      address range is only required by the platform IPQ50xx.
39
40  clocks:
41    items:
42      - description: MDIO clock source frequency fixed to 100MHZ
43
44  clock-names:
45    items:
46      - const: gcc_mdio_ahb_clk
47
48  clock-frequency:
49    description:
50      The MDIO bus clock that must be output by the MDIO bus hardware, if
51      absent, the default hardware values are used.
52
53      MDC rate is feed by an external clock (fixed 100MHz) and is divider
54      internally. The default divider is /256 resulting in the default rate
55      applied of 390KHz.
56
57      To follow 802.3 standard that instruct up to 2.5MHz by default, if
58      this property is not declared and the divider is set to /256, by
59      default 1.5625Mhz is select.
60    enum: [ 390625, 781250, 1562500, 3125000, 6250000, 12500000 ]
61    default: 1562500
62
63required:
64  - compatible
65  - reg
66  - "#address-cells"
67  - "#size-cells"
68
69allOf:
70  - $ref: mdio.yaml#
71
72  - if:
73      properties:
74        compatible:
75          contains:
76            enum:
77              - qcom,ipq5018-mdio
78              - qcom,ipq6018-mdio
79              - qcom,ipq8074-mdio
80              - qcom,ipq9574-mdio
81    then:
82      required:
83        - clocks
84        - clock-names
85    else:
86      properties:
87        clocks: false
88        clock-names: false
89
90unevaluatedProperties: false
91
92examples:
93  - |
94    mdio@90000 {
95      #address-cells = <1>;
96      #size-cells = <0>;
97      compatible = "qcom,ipq4019-mdio";
98      reg = <0x90000 0x64>;
99
100      ethphy0: ethernet-phy@0 {
101        reg = <0>;
102      };
103
104      ethphy1: ethernet-phy@1 {
105        reg = <1>;
106      };
107
108      ethphy2: ethernet-phy@2 {
109        reg = <2>;
110      };
111
112      ethphy3: ethernet-phy@3 {
113        reg = <3>;
114      };
115
116      ethphy4: ethernet-phy@4 {
117        reg = <4>;
118      };
119    };
120