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
7 title: Marvell MV64XXX I2C Controller
8
9 maintainers:
10 - Gregory CLEMENT <gregory.clement@bootlin.com>
11
12 properties:
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,suniv-f1c100s-i2c
23 - allwinner,sun8i-a23-i2c
24 - allwinner,sun8i-a83t-i2c
25 - allwinner,sun8i-v536-i2c
26 - allwinner,sun50i-a64-i2c
27 - allwinner,sun50i-h6-i2c
28 - const: allwinner,sun6i-a31-i2c
29 - description: Allwinner SoCs with offload support
30 items:
31 - enum:
32 - allwinner,sun20i-d1-i2c
33 - allwinner,sun50i-a100-i2c
34 - allwinner,sun50i-h616-i2c
35 - allwinner,sun50i-r329-i2c
36 - const: allwinner,sun8i-v536-i2c
37 - const: allwinner,sun6i-a31-i2c
38 - const: marvell,mv64xxx-i2c
39 - const: marvell,mv78230-i2c
40 - const: marvell,mv78230-a0-i2c
41
42 description:
43 Only use "marvell,mv78230-a0-i2c" for a very rare, initial
44 version of the SoC which had broken offload support. Linux
45 auto-detects this and sets it appropriately.
46
47 reg:
48 maxItems: 1
49
50 interrupts:
51 maxItems: 1
52
53 clocks:
54 minItems: 1
55 items:
56 - description: Reference clock for the I2C bus
57 - description: Bus clock (Only for Armada 7K/8K)
58
59 clock-names:
60 minItems: 1
61 items:
62 - const: core
63 - const: reg
64 description:
65 Mandatory if two clocks are used (only for Armada 7k and 8k).
66
67 resets:
68 maxItems: 1
69
70 dmas:
71 items:
72 - description: RX DMA Channel
73 - description: TX DMA Channel
74
75 dma-names:
76 items:
77 - const: rx
78 - const: tx
79
80 dependencies:
81 dmas: [ dma-names ]
82
83 required:
84 - compatible
85 - reg
86 - interrupts
87
88 allOf:
89 - $ref: /schemas/i2c/i2c-controller.yaml#
90 - if:
91 properties:
92 compatible:
93 contains:
94 enum:
95 - allwinner,sun4i-a10-i2c
96 - allwinner,sun6i-a31-i2c
97
98 then:
99 required:
100 - clocks
101
102 - if:
103 properties:
104 compatible:
105 contains:
106 const: allwinner,sun6i-a31-i2c
107
108 then:
109 required:
110 - resets
111
112 unevaluatedProperties: false
113
114 examples:
115 - |
116 i2c@11000 {
117 compatible = "marvell,mv64xxx-i2c";
118 reg = <0x11000 0x20>;
119 interrupts = <29>;
120 clock-frequency = <100000>;
121 };
122
123 - |
124 i2c@11000 {
125 compatible = "marvell,mv78230-i2c";
126 reg = <0x11000 0x100>;
127 interrupts = <29>;
128 clock-frequency = <100000>;
129 };
130
131 - |
132 i2c@701000 {
133 compatible = "marvell,mv78230-i2c";
134 reg = <0x701000 0x20>;
135 interrupts = <29>;
136 clock-frequency = <100000>;
137 clock-names = "core", "reg";
138 clocks = <&core_clock>, <®_clock>;
139 };
140
141 ...
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