xref: /linux/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml (revision 008128cd5948bd3589a9c300e426af4d834029bb) 
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,mt7986-i2c
27      - const: mediatek,mt8168-i2c
28      - const: mediatek,mt8173-i2c
29      - const: mediatek,mt8183-i2c
30      - const: mediatek,mt8186-i2c
31      - const: mediatek,mt8188-i2c
32      - const: mediatek,mt8192-i2c
33      - items:
34          - enum:
35              - mediatek,mt7629-i2c
36              - mediatek,mt8516-i2c
37          - const: mediatek,mt2712-i2c
38      - items:
39          - enum:
40              - mediatek,mt2701-i2c
41              - mediatek,mt6797-i2c
42              - mediatek,mt7623-i2c
43          - const: mediatek,mt6577-i2c
44      - items:
45          - enum:
46              - mediatek,mt8365-i2c
47          - const: mediatek,mt8168-i2c
48      - items:
49          - enum:
50              - mediatek,mt8195-i2c
51          - const: mediatek,mt8192-i2c
52
53  reg:
54    items:
55      - description: Physical base address
56      - description: DMA base address
57
58  interrupts:
59    maxItems: 1
60
61  clocks:
62    minItems: 2
63    items:
64      - description: Main clock for I2C bus
65      - description: Clock for I2C via DMA
66      - description: Bus arbitrator clock
67      - description: Clock for I2C from PMIC
68
69  clock-names:
70    minItems: 2
71    items:
72      - const: main
73      - const: dma
74      - const: arb
75      - const: pmic
76
77  clock-div:
78    $ref: /schemas/types.yaml#/definitions/uint32
79    description: Frequency divider of clock source in I2C module
80
81  clock-frequency:
82    default: 100000
83    description:
84      SCL frequency to use (in Hz). If omitted, 100kHz is used.
85
86  mediatek,have-pmic:
87    description: Platform controls I2C from PMIC side
88    type: boolean
89
90  mediatek,use-push-pull:
91    description: Use push-pull mode I/O config
92    type: boolean
93
94  vbus-supply:
95    description: Phandle to the regulator providing power to SCL/SDA
96
97required:
98  - compatible
99  - reg
100  - clocks
101  - clock-names
102  - clock-div
103  - interrupts
104
105unevaluatedProperties: false
106
107examples:
108  - |
109    #include <dt-bindings/interrupt-controller/arm-gic.h>
110    #include <dt-bindings/interrupt-controller/irq.h>
111
112    i2c0: i2c@1100d000 {
113      compatible = "mediatek,mt6577-i2c";
114      reg = <0x1100d000 0x70>, <0x11000300 0x80>;
115      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
116      clocks = <&i2c0_ck>, <&ap_dma_ck>;
117      clock-names = "main", "dma";
118      clock-div = <16>;
119      clock-frequency = <400000>;
120      mediatek,have-pmic;
121
122      #address-cells = <1>;
123      #size-cells = <0>;
124    };
125