xref: /linux/Documentation/devicetree/bindings/net/amlogic,g12a-mdio-mux.yaml (revision 9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/amlogic,g12a-mdio-mux.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MDIO bus multiplexer/glue of Amlogic G12a SoC family
8
9description:
10  This is a special case of a MDIO bus multiplexer. It allows to choose between
11  the internal mdio bus leading to the embedded 10/100 PHY or the external
12  MDIO bus.
13
14maintainers:
15  - Neil Armstrong <neil.armstrong@linaro.org>
16
17allOf:
18  - $ref: mdio-mux.yaml#
19
20properties:
21  compatible:
22    const: amlogic,g12a-mdio-mux
23
24  reg:
25    maxItems: 1
26
27  clocks:
28    items:
29      - description: peripheral clock
30      - description: platform crytal
31      - description: SoC 50MHz MPLL
32
33  clock-names:
34    items:
35      - const: pclk
36      - const: clkin0
37      - const: clkin1
38
39required:
40  - compatible
41  - reg
42  - clocks
43  - clock-names
44
45unevaluatedProperties: false
46
47examples:
48  - |
49    #include <dt-bindings/interrupt-controller/irq.h>
50    #include <dt-bindings/interrupt-controller/arm-gic.h>
51    mdio-multiplexer@4c000 {
52        compatible = "amlogic,g12a-mdio-mux";
53        reg = <0x4c000 0xa4>;
54        clocks = <&clkc_eth_phy>, <&xtal>, <&clkc_mpll>;
55        clock-names = "pclk", "clkin0", "clkin1";
56        mdio-parent-bus = <&mdio0>;
57        #address-cells = <1>;
58        #size-cells = <0>;
59
60        mdio@0 {
61            reg = <0>;
62            #address-cells = <1>;
63            #size-cells = <0>;
64        };
65
66        mdio@1 {
67            reg = <1>;
68            #address-cells = <1>;
69            #size-cells = <0>;
70
71            ethernet-phy@8 {
72                compatible = "ethernet-phy-id0180.3301",
73                             "ethernet-phy-ieee802.3-c22";
74                interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
75                reg = <8>;
76                max-speed = <100>;
77            };
78        };
79    };
80...
81