xref: /linux/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml (revision 30bbcb44707a97fcb62246bebc8b413b5ab293f8) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek I2C controller
8
9description:
10  This driver interfaces with the native I2C controller present in
11  various MediaTek SoCs.
12
13allOf:
14  - $ref: /schemas/i2c/i2c-controller.yaml#
15
16maintainers:
17  - Qii Wang <qii.wang@mediatek.com>
18
19properties:
20  compatible:
21    oneOf:
22      - const: mediatek,mt2712-i2c
23      - const: mediatek,mt6577-i2c
24      - const: mediatek,mt6589-i2c
25      - const: mediatek,mt7622-i2c
26      - const: mediatek,mt7981-i2c
27      - const: mediatek,mt7986-i2c
28      - const: mediatek,mt8168-i2c
29      - const: mediatek,mt8173-i2c
30      - const: mediatek,mt8183-i2c
31      - const: mediatek,mt8186-i2c
32      - const: mediatek,mt8188-i2c
33      - const: mediatek,mt8192-i2c
34      - items:
35          - enum:
36              - mediatek,mt7629-i2c
37              - mediatek,mt8516-i2c
38          - const: mediatek,mt2712-i2c
39      - items:
40          - enum:
41              - mediatek,mt2701-i2c
42              - mediatek,mt6797-i2c
43              - mediatek,mt7623-i2c
44          - const: mediatek,mt6577-i2c
45      - items:
46          - enum:
47              - mediatek,mt8365-i2c
48          - const: mediatek,mt8168-i2c
49      - items:
50          - enum:
51              - mediatek,mt6795-i2c
52          - const: mediatek,mt8173-i2c
53      - items:
54          - enum:
55              - mediatek,mt6878-i2c
56              - mediatek,mt6991-i2c
57              - mediatek,mt8196-i2c
58          - const: mediatek,mt8188-i2c
59      - items:
60          - enum:
61              - mediatek,mt6893-i2c
62              - mediatek,mt8195-i2c
63          - const: mediatek,mt8192-i2c
64
65  reg:
66    items:
67      - description: Physical base address
68      - description: DMA base address
69
70  interrupts:
71    maxItems: 1
72
73  clocks:
74    minItems: 2
75    items:
76      - description: Main clock for I2C bus
77      - description: Clock for I2C via DMA
78      - description: Bus arbitrator clock
79      - description: Clock for I2C from PMIC
80
81  clock-names:
82    minItems: 2
83    items:
84      - const: main
85      - const: dma
86      - const: arb
87      - const: pmic
88
89  clock-div:
90    $ref: /schemas/types.yaml#/definitions/uint32
91    description: Frequency divider of clock source in I2C module
92
93  clock-frequency:
94    default: 100000
95    description:
96      SCL frequency to use (in Hz). If omitted, 100kHz is used.
97
98  mediatek,have-pmic:
99    description: Platform controls I2C from PMIC side
100    type: boolean
101
102  mediatek,use-push-pull:
103    description: Use push-pull mode I/O config
104    type: boolean
105
106  vbus-supply:
107    description: Phandle to the regulator providing power to SCL/SDA
108
109required:
110  - compatible
111  - reg
112  - clocks
113  - clock-names
114  - clock-div
115  - interrupts
116
117unevaluatedProperties: false
118
119examples:
120  - |
121    #include <dt-bindings/interrupt-controller/arm-gic.h>
122    #include <dt-bindings/interrupt-controller/irq.h>
123
124    i2c0: i2c@1100d000 {
125      compatible = "mediatek,mt6577-i2c";
126      reg = <0x1100d000 0x70>, <0x11000300 0x80>;
127      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
128      clocks = <&i2c0_ck>, <&ap_dma_ck>;
129      clock-names = "main", "dma";
130      clock-div = <16>;
131      clock-frequency = <400000>;
132      mediatek,have-pmic;
133
134      #address-cells = <1>;
135      #size-cells = <0>;
136    };
137