1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/i2c/realtek,rtl9301-i2c.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Realtek RTL I2C Controller
maintainers:
- Chris Packham <chris.packham@alliedtelesis.co.nz>
description:
RTL9300 SoCs have two I2C controllers. Each of these has an SCL line (which
if not-used for SCL can be a GPIO). There are 8 common SDA lines that can be
assigned to either I2C controller.
RTL9310 SoCs have equal capabilities but support 12 common SDA lines which
can be assigned to either I2C controller.
properties:
compatible:
oneOf:
- items:
- enum:
- realtek,rtl9302b-i2c
- realtek,rtl9302c-i2c
- realtek,rtl9303-i2c
- const: realtek,rtl9301-i2c
- items:
- enum:
- realtek,rtl9311-i2c
- realtek,rtl9312-i2c
- realtek,rtl9313-i2c
- const: realtek,rtl9310-i2c
- enum:
- realtek,rtl9301-i2c
- realtek,rtl9310-i2c
reg:
items:
- description: Register offset and size of this I2C controller.
"#address-cells":
const: 1
"#size-cells":
const: 0
realtek,scl:
$ref: /schemas/types.yaml#/definitions/uint32
description:
The SCL line number of this I2C controller.
enum: [ 0, 1 ]
patternProperties:
'^i2c@[0-9ab]$':
$ref: /schemas/i2c/i2c-controller.yaml
unevaluatedProperties: false
properties:
reg:
description: The SDA line number associated with the I2C bus.
maxItems: 1
required:
- reg
allOf:
- if:
properties:
compatible:
contains:
const: realtek,rtl9310-i2c
then:
required:
- realtek,scl
- if:
properties:
compatible:
contains:
const: realtek,rtl9301-i2c
then:
patternProperties:
'^i2c@[89ab]$': false
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c@36c {
compatible = "realtek,rtl9301-i2c";
reg = <0x36c 0x14>;
#address-cells = <1>;
#size-cells = <0>;
i2c@2 {
reg = <2>;
#address-cells = <1>;
#size-cells = <0>;
};
};
|
