tjh.dev
Linux kernel mirror (for testing)
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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 };