xref: /linux/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml (revision 883e3c9f40814377a239ca0becbcc77deab5ffe5) 
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,mt6893-i2c
56              - mediatek,mt8195-i2c
57          - const: mediatek,mt8192-i2c
58
59  reg:
60    items:
61      - description: Physical base address
62      - description: DMA base address
63
64  interrupts:
65    maxItems: 1
66
67  clocks:
68    minItems: 2
69    items:
70      - description: Main clock for I2C bus
71      - description: Clock for I2C via DMA
72      - description: Bus arbitrator clock
73      - description: Clock for I2C from PMIC
74
75  clock-names:
76    minItems: 2
77    items:
78      - const: main
79      - const: dma
80      - const: arb
81      - const: pmic
82
83  clock-div:
84    $ref: /schemas/types.yaml#/definitions/uint32
85    description: Frequency divider of clock source in I2C module
86
87  clock-frequency:
88    default: 100000
89    description:
90      SCL frequency to use (in Hz). If omitted, 100kHz is used.
91
92  mediatek,have-pmic:
93    description: Platform controls I2C from PMIC side
94    type: boolean
95
96  mediatek,use-push-pull:
97    description: Use push-pull mode I/O config
98    type: boolean
99
100  vbus-supply:
101    description: Phandle to the regulator providing power to SCL/SDA
102
103required:
104  - compatible
105  - reg
106  - clocks
107  - clock-names
108  - clock-div
109  - interrupts
110
111unevaluatedProperties: false
112
113examples:
114  - |
115    #include <dt-bindings/interrupt-controller/arm-gic.h>
116    #include <dt-bindings/interrupt-controller/irq.h>
117
118    i2c0: i2c@1100d000 {
119      compatible = "mediatek,mt6577-i2c";
120      reg = <0x1100d000 0x70>, <0x11000300 0x80>;
121      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
122      clocks = <&i2c0_ck>, <&ap_dma_ck>;
123      clock-names = "main", "dma";
124      clock-div = <16>;
125      clock-frequency = <400000>;
126      mediatek,have-pmic;
127
128      #address-cells = <1>;
129      #size-cells = <0>;
130    };
131