xref: /freebsd/sys/contrib/device-tree/Bindings/i2c/i2c-mt65xx.yaml (revision 370e009188ba90c3290b1479aa06ec98b66e140a) 
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,mt8168-i2c
27      - const: mediatek,mt8173-i2c
28      - const: mediatek,mt8183-i2c
29      - const: mediatek,mt8186-i2c
30      - const: mediatek,mt8188-i2c
31      - const: mediatek,mt8192-i2c
32      - items:
33          - enum:
34              - mediatek,mt7629-i2c
35              - mediatek,mt8516-i2c
36          - const: mediatek,mt2712-i2c
37      - items:
38          - enum:
39              - mediatek,mt2701-i2c
40              - mediatek,mt6797-i2c
41              - mediatek,mt7623-i2c
42          - const: mediatek,mt6577-i2c
43      - items:
44          - enum:
45              - mediatek,mt8195-i2c
46          - const: mediatek,mt8192-i2c
47
48  reg:
49    items:
50      - description: Physical base address
51      - description: DMA base address
52
53  interrupts:
54    maxItems: 1
55
56  clocks:
57    minItems: 2
58    items:
59      - description: Main clock for I2C bus
60      - description: Clock for I2C via DMA
61      - description: Bus arbitrator clock
62      - description: Clock for I2C from PMIC
63
64  clock-names:
65    minItems: 2
66    items:
67      - const: main
68      - const: dma
69      - const: arb
70      - const: pmic
71
72  clock-div:
73    $ref: /schemas/types.yaml#/definitions/uint32
74    description: Frequency divider of clock source in I2C module
75
76  clock-frequency:
77    default: 100000
78    description:
79      SCL frequency to use (in Hz). If omitted, 100kHz is used.
80
81  mediatek,have-pmic:
82    description: Platform controls I2C from PMIC side
83    type: boolean
84
85  mediatek,use-push-pull:
86    description: Use push-pull mode I/O config
87    type: boolean
88
89  vbus-supply:
90    description: Phandle to the regulator providing power to SCL/SDA
91
92required:
93  - compatible
94  - reg
95  - clocks
96  - clock-names
97  - clock-div
98  - interrupts
99
100unevaluatedProperties: false
101
102examples:
103  - |
104    #include <dt-bindings/interrupt-controller/arm-gic.h>
105    #include <dt-bindings/interrupt-controller/irq.h>
106
107    i2c0: i2c@1100d000 {
108      compatible = "mediatek,mt6577-i2c";
109      reg = <0x1100d000 0x70>, <0x11000300 0x80>;
110      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
111      clocks = <&i2c0_ck>, <&ap_dma_ck>;
112      clock-names = "main", "dma";
113      clock-div = <16>;
114      clock-frequency = <400000>;
115      mediatek,have-pmic;
116
117      #address-cells = <1>;
118      #size-cells = <0>;
119    };
120