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
|
# 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,mt8168-i2c
- const: mediatek,mt8173-i2c
- const: mediatek,mt8183-i2c
- const: mediatek,mt8186-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,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>;
};
|
