xref: /linux/Documentation/devicetree/bindings/net/loongson,ls1b-gmac.yaml (revision 9e56ff53b4115875667760445b028357848b4748) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/loongson,ls1b-gmac.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Loongson-1B Gigabit Ethernet MAC Controller
8
9maintainers:
10  - Keguang Zhang <keguang.zhang@gmail.com>
11
12description: |
13  Loongson-1B Gigabit Ethernet MAC Controller is based on
14  Synopsys DesignWare MAC (version 3.50a).
15
16  Main features
17  - Dual 10/100/1000Mbps GMAC controllers
18  - Full-duplex operation (IEEE 802.3x flow control automatic transmission)
19  - Half-duplex operation (CSMA/CD Protocol and back-pressure support)
20  - RX Checksum Offload
21  - TX Checksum insertion
22  - MII interface
23  - RGMII interface
24
25select:
26  properties:
27    compatible:
28      contains:
29        enum:
30          - loongson,ls1b-gmac
31  required:
32    - compatible
33
34properties:
35  compatible:
36    items:
37      - enum:
38          - loongson,ls1b-gmac
39      - const: snps,dwmac-3.50a
40
41  reg:
42    maxItems: 1
43
44  clocks:
45    maxItems: 1
46
47  clock-names:
48    items:
49      - const: stmmaceth
50
51  interrupts:
52    maxItems: 1
53
54  interrupt-names:
55    items:
56      - const: macirq
57
58  loongson,ls1-syscon:
59    $ref: /schemas/types.yaml#/definitions/phandle
60    description:
61      Phandle to the syscon containing some extra configurations
62      including PHY interface mode.
63
64  phy-mode:
65    enum:
66      - mii
67      - rgmii-id
68
69required:
70  - compatible
71  - reg
72  - clocks
73  - clock-names
74  - interrupts
75  - interrupt-names
76  - loongson,ls1-syscon
77
78allOf:
79  - $ref: snps,dwmac.yaml#
80
81unevaluatedProperties: false
82
83examples:
84  - |
85    #include <dt-bindings/clock/loongson,ls1x-clk.h>
86    #include <dt-bindings/interrupt-controller/irq.h>
87
88    gmac0: ethernet@1fe10000 {
89        compatible = "loongson,ls1b-gmac", "snps,dwmac-3.50a";
90        reg = <0x1fe10000 0x10000>;
91
92        clocks = <&clkc LS1X_CLKID_AHB>;
93        clock-names = "stmmaceth";
94
95        interrupt-parent = <&intc1>;
96        interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
97        interrupt-names = "macirq";
98
99        loongson,ls1-syscon = <&syscon>;
100
101        phy-handle = <&phy0>;
102        phy-mode = "mii";
103        snps,pbl = <1>;
104
105        mdio {
106            #address-cells = <1>;
107            #size-cells = <0>;
108            compatible = "snps,dwmac-mdio";
109
110            phy0: ethernet-phy@0 {
111                reg = <0x0>;
112            };
113        };
114    };
115