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 7 title: MediaTek I2C controller 8 9 description: 10 This driver interfaces with the native I2C controller present in 11 various MediaTek SoCs. 12 13 allOf: 14 - $ref: /schemas/i2c/i2c-controller.yaml# 15 16 maintainers: 17 - Qii Wang <qii.wang@mediatek.com> 18 19 properties: 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 97 required: 98 - compatible 99 - reg 100 - clocks 101 - clock-names 102 - clock-div 103 - interrupts 104 105 unevaluatedProperties: false 106 107 examples: 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