xref: /linux/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml (revision a4eb44a6435d6d8f9e642407a4a06f65eb90ca04) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/marvell,mv64xxx-i2c.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Marvell MV64XXX I2C Controller Device Tree Bindings
8
9maintainers:
10  - Gregory CLEMENT <gregory.clement@bootlin.com>
11
12properties:
13  compatible:
14    oneOf:
15      - const: allwinner,sun4i-a10-i2c
16      - items:
17          - const: allwinner,sun7i-a20-i2c
18          - const: allwinner,sun4i-a10-i2c
19      - const: allwinner,sun6i-a31-i2c
20      - items:
21          - enum:
22              - allwinner,sun8i-a23-i2c
23              - allwinner,sun8i-a83t-i2c
24              - allwinner,sun50i-a64-i2c
25              - allwinner,sun50i-a100-i2c
26              - allwinner,sun50i-h6-i2c
27              - allwinner,sun50i-h616-i2c
28          - const: allwinner,sun6i-a31-i2c
29      - const: marvell,mv64xxx-i2c
30      - const: marvell,mv78230-i2c
31      - const: marvell,mv78230-a0-i2c
32
33    description:
34      Only use "marvell,mv78230-a0-i2c" for a very rare, initial
35      version of the SoC which had broken offload support. Linux
36      auto-detects this and sets it appropriately.
37
38  reg:
39    maxItems: 1
40
41  interrupts:
42    maxItems: 1
43
44  clocks:
45    minItems: 1
46    items:
47      - description: Reference clock for the I2C bus
48      - description: Bus clock (Only for Armada 7K/8K)
49
50  clock-names:
51    minItems: 1
52    items:
53      - const: core
54      - const: reg
55    description:
56      Mandatory if two clocks are used (only for Armada 7k and 8k).
57
58  resets:
59    maxItems: 1
60
61required:
62  - compatible
63  - reg
64  - interrupts
65
66allOf:
67  - $ref: /schemas/i2c/i2c-controller.yaml#
68  - if:
69      properties:
70        compatible:
71          contains:
72            enum:
73              - allwinner,sun4i-a10-i2c
74              - allwinner,sun6i-a31-i2c
75
76    then:
77      required:
78        - clocks
79
80  - if:
81      properties:
82        compatible:
83          contains:
84            const: allwinner,sun6i-a31-i2c
85
86    then:
87      required:
88        - resets
89
90unevaluatedProperties: false
91
92examples:
93  - |
94    i2c@11000 {
95        compatible = "marvell,mv64xxx-i2c";
96        reg = <0x11000 0x20>;
97        interrupts = <29>;
98        clock-frequency = <100000>;
99    };
100
101  - |
102    i2c@11000 {
103        compatible = "marvell,mv78230-i2c";
104        reg = <0x11000 0x100>;
105        interrupts = <29>;
106        clock-frequency = <100000>;
107    };
108
109  - |
110    i2c@701000 {
111        compatible = "marvell,mv78230-i2c";
112        reg = <0x701000 0x20>;
113        interrupts = <29>;
114        clock-frequency = <100000>;
115        clock-names = "core", "reg";
116        clocks = <&core_clock>, <&reg_clock>;
117    };
118
119...
120