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
7 title: Qualcomm IPQ40xx MDIO Controller
8
9 maintainers:
10 - Robert Marko <robert.marko@sartura.hr>
11
12 properties:
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
63 required:
64 - compatible
65 - reg
66 - "#address-cells"
67 - "#size-cells"
68
69 allOf:
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
90 unevaluatedProperties: false
91
92 examples:
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 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.