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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/realtek,rtl9301-i2c.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Realtek RTL I2C Controller
8
9maintainers:
10 - Chris Packham <chris.packham@alliedtelesis.co.nz>
11
12description:
13 RTL9300 SoCs have two I2C controllers. Each of these has an SCL line (which
14 if not-used for SCL can be a GPIO). There are 8 common SDA lines that can be
15 assigned to either I2C controller.
16 RTL9310 SoCs have equal capabilities but support 12 common SDA lines which
17 can be assigned to either I2C controller.
18
19properties:
20 compatible:
21 oneOf:
22 - items:
23 - enum:
24 - realtek,rtl9302b-i2c
25 - realtek,rtl9302c-i2c
26 - realtek,rtl9303-i2c
27 - const: realtek,rtl9301-i2c
28 - items:
29 - enum:
30 - realtek,rtl9311-i2c
31 - realtek,rtl9312-i2c
32 - realtek,rtl9313-i2c
33 - const: realtek,rtl9310-i2c
34 - enum:
35 - realtek,rtl9301-i2c
36 - realtek,rtl9310-i2c
37
38 reg:
39 items:
40 - description: Register offset and size of this I2C controller.
41
42 "#address-cells":
43 const: 1
44
45 "#size-cells":
46 const: 0
47
48 realtek,scl:
49 $ref: /schemas/types.yaml#/definitions/uint32
50 description:
51 The SCL line number of this I2C controller.
52 enum: [ 0, 1 ]
53
54patternProperties:
55 '^i2c@[0-9ab]$':
56 $ref: /schemas/i2c/i2c-controller.yaml
57 unevaluatedProperties: false
58
59 properties:
60 reg:
61 description: The SDA line number associated with the I2C bus.
62 maxItems: 1
63
64 required:
65 - reg
66
67allOf:
68 - if:
69 properties:
70 compatible:
71 contains:
72 const: realtek,rtl9310-i2c
73 then:
74 required:
75 - realtek,scl
76 - if:
77 properties:
78 compatible:
79 contains:
80 const: realtek,rtl9301-i2c
81 then:
82 patternProperties:
83 '^i2c@[89ab]$': false
84
85required:
86 - compatible
87 - reg
88
89additionalProperties: false
90
91examples:
92 - |
93 i2c@36c {
94 compatible = "realtek,rtl9301-i2c";
95 reg = <0x36c 0x14>;
96 #address-cells = <1>;
97 #size-cells = <0>;
98
99 i2c@2 {
100 reg = <2>;
101 #address-cells = <1>;
102 #size-cells = <0>;
103 };
104 };