xref: /linux/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml (revision 4b5256571951eaa581fb8169e8c460429948d208) 
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,mt8195-i2c
56          - const: mediatek,mt8192-i2c
57
58  reg:
59    items:
60      - description: Physical base address
61      - description: DMA base address
62
63  interrupts:
64    maxItems: 1
65
66  clocks:
67    minItems: 2
68    items:
69      - description: Main clock for I2C bus
70      - description: Clock for I2C via DMA
71      - description: Bus arbitrator clock
72      - description: Clock for I2C from PMIC
73
74  clock-names:
75    minItems: 2
76    items:
77      - const: main
78      - const: dma
79      - const: arb
80      - const: pmic
81
82  clock-div:
83    $ref: /schemas/types.yaml#/definitions/uint32
84    description: Frequency divider of clock source in I2C module
85
86  clock-frequency:
87    default: 100000
88    description:
89      SCL frequency to use (in Hz). If omitted, 100kHz is used.
90
91  mediatek,have-pmic:
92    description: Platform controls I2C from PMIC side
93    type: boolean
94
95  mediatek,use-push-pull:
96    description: Use push-pull mode I/O config
97    type: boolean
98
99  vbus-supply:
100    description: Phandle to the regulator providing power to SCL/SDA
101
102required:
103  - compatible
104  - reg
105  - clocks
106  - clock-names
107  - clock-div
108  - interrupts
109
110unevaluatedProperties: false
111
112examples:
113  - |
114    #include <dt-bindings/interrupt-controller/arm-gic.h>
115    #include <dt-bindings/interrupt-controller/irq.h>
116
117    i2c0: i2c@1100d000 {
118      compatible = "mediatek,mt6577-i2c";
119      reg = <0x1100d000 0x70>, <0x11000300 0x80>;
120      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
121      clocks = <&i2c0_ck>, <&ap_dma_ck>;
122      clock-names = "main", "dma";
123      clock-div = <16>;
124      clock-frequency = <400000>;
125      mediatek,have-pmic;
126
127      #address-cells = <1>;
128      #size-cells = <0>;
129    };
130