xref: /linux/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml (revision 6f84981772535e670e4e2df051a672af229b6694) 
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,mt8195-i2c
47          - const: mediatek,mt8192-i2c
48
49  reg:
50    items:
51      - description: Physical base address
52      - description: DMA base address
53
54  interrupts:
55    maxItems: 1
56
57  clocks:
58    minItems: 2
59    items:
60      - description: Main clock for I2C bus
61      - description: Clock for I2C via DMA
62      - description: Bus arbitrator clock
63      - description: Clock for I2C from PMIC
64
65  clock-names:
66    minItems: 2
67    items:
68      - const: main
69      - const: dma
70      - const: arb
71      - const: pmic
72
73  clock-div:
74    $ref: /schemas/types.yaml#/definitions/uint32
75    description: Frequency divider of clock source in I2C module
76
77  clock-frequency:
78    default: 100000
79    description:
80      SCL frequency to use (in Hz). If omitted, 100kHz is used.
81
82  mediatek,have-pmic:
83    description: Platform controls I2C from PMIC side
84    type: boolean
85
86  mediatek,use-push-pull:
87    description: Use push-pull mode I/O config
88    type: boolean
89
90  vbus-supply:
91    description: Phandle to the regulator providing power to SCL/SDA
92
93required:
94  - compatible
95  - reg
96  - clocks
97  - clock-names
98  - clock-div
99  - interrupts
100
101unevaluatedProperties: false
102
103examples:
104  - |
105    #include <dt-bindings/interrupt-controller/arm-gic.h>
106    #include <dt-bindings/interrupt-controller/irq.h>
107
108    i2c0: i2c@1100d000 {
109      compatible = "mediatek,mt6577-i2c";
110      reg = <0x1100d000 0x70>, <0x11000300 0x80>;
111      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
112      clocks = <&i2c0_ck>, <&ap_dma_ck>;
113      clock-names = "main", "dma";
114      clock-div = <16>;
115      clock-frequency = <400000>;
116      mediatek,have-pmic;
117
118      #address-cells = <1>;
119      #size-cells = <0>;
120    };
121