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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek I2C controller
description:
This driver interfaces with the native I2C controller present in
various MediaTek SoCs.
allOf:
- $ref: /schemas/i2c/i2c-controller.yaml#
maintainers:
- Qii Wang <qii.wang@mediatek.com>
properties:
compatible:
oneOf:
- const: mediatek,mt2712-i2c
- const: mediatek,mt6577-i2c
- const: mediatek,mt6589-i2c
- const: mediatek,mt7622-i2c
- const: mediatek,mt7981-i2c
- const: mediatek,mt7986-i2c
- const: mediatek,mt8168-i2c
- const: mediatek,mt8173-i2c
- const: mediatek,mt8183-i2c
- const: mediatek,mt8186-i2c
- const: mediatek,mt8188-i2c
- const: mediatek,mt8192-i2c
- items:
- enum:
- mediatek,mt7629-i2c
- mediatek,mt8516-i2c
- const: mediatek,mt2712-i2c
- items:
- enum:
- mediatek,mt2701-i2c
- mediatek,mt6797-i2c
- mediatek,mt7623-i2c
- const: mediatek,mt6577-i2c
- items:
- enum:
- mediatek,mt8365-i2c
- const: mediatek,mt8168-i2c
- items:
- enum:
- mediatek,mt6795-i2c
- const: mediatek,mt8173-i2c
- items:
- enum:
- mediatek,mt6893-i2c
- mediatek,mt8195-i2c
- const: mediatek,mt8192-i2c
reg:
items:
- description: Physical base address
- description: DMA base address
interrupts:
maxItems: 1
clocks:
minItems: 2
items:
- description: Main clock for I2C bus
- description: Clock for I2C via DMA
- description: Bus arbitrator clock
- description: Clock for I2C from PMIC
clock-names:
minItems: 2
items:
- const: main
- const: dma
- const: arb
- const: pmic
clock-div:
$ref: /schemas/types.yaml#/definitions/uint32
description: Frequency divider of clock source in I2C module
clock-frequency:
default: 100000
description:
SCL frequency to use (in Hz). If omitted, 100kHz is used.
mediatek,have-pmic:
description: Platform controls I2C from PMIC side
type: boolean
mediatek,use-push-pull:
description: Use push-pull mode I/O config
type: boolean
vbus-supply:
description: Phandle to the regulator providing power to SCL/SDA
required:
- compatible
- reg
- clocks
- clock-names
- clock-div
- interrupts
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c0: i2c@1100d000 {
compatible = "mediatek,mt6577-i2c";
reg = <0x1100d000 0x70>, <0x11000300 0x80>;
interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
clocks = <&i2c0_ck>, <&ap_dma_ck>;
clock-names = "main", "dma";
clock-div = <16>;
clock-frequency = <400000>;
mediatek,have-pmic;
#address-cells = <1>;
#size-cells = <0>;
};
|
