| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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,mt7981-i2c |
| 27 | - const: mediatek,mt7986-i2c |
| 28 | - const: mediatek,mt8168-i2c |
| 29 | - const: mediatek,mt8173-i2c |
| 30 | - const: mediatek,mt8183-i2c |
| 31 | - const: mediatek,mt8186-i2c |
| 32 | - const: mediatek,mt8188-i2c |
| 33 | - const: mediatek,mt8192-i2c |
| 34 | - items: |
| 35 | - enum: |
| 36 | - mediatek,mt7629-i2c |
| 37 | - mediatek,mt8516-i2c |
| 38 | - const: mediatek,mt2712-i2c |
| 39 | - items: |
| 40 | - enum: |
| 41 | - mediatek,mt2701-i2c |
| 42 | - mediatek,mt6797-i2c |
| 43 | - mediatek,mt7623-i2c |
| 44 | - const: mediatek,mt6577-i2c |
| 45 | - items: |
| 46 | - enum: |
| 47 | - mediatek,mt8365-i2c |
| 48 | - const: mediatek,mt8168-i2c |
| 49 | - items: |
| 50 | - enum: |
| 51 | - mediatek,mt6795-i2c |
| 52 | - const: mediatek,mt8173-i2c |
| 53 | - items: |
| 54 | - enum: |
| 55 | - mediatek,mt8195-i2c |
| 56 | - const: mediatek,mt8192-i2c |
| 57 | |
| 58 | reg: |
| 59 | items: |
| 60 | - description: Physical base address |
| 61 | - description: DMA base address |
| 62 | |
| 63 | interrupts: |
| 64 | maxItems: 1 |
| 65 | |
| 66 | clocks: |
| 67 | minItems: 2 |
| 68 | items: |
| 69 | - description: Main clock for I2C bus |
| 70 | - description: Clock for I2C via DMA |
| 71 | - description: Bus arbitrator clock |
| 72 | - description: Clock for I2C from PMIC |
| 73 | |
| 74 | clock-names: |
| 75 | minItems: 2 |
| 76 | items: |
| 77 | - const: main |
| 78 | - const: dma |
| 79 | - const: arb |
| 80 | - const: pmic |
| 81 | |
| 82 | clock-div: |
| 83 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 84 | description: Frequency divider of clock source in I2C module |
| 85 | |
| 86 | clock-frequency: |
| 87 | default: 100000 |
| 88 | description: |
| 89 | SCL frequency to use (in Hz). If omitted, 100kHz is used. |
| 90 | |
| 91 | mediatek,have-pmic: |
| 92 | description: Platform controls I2C from PMIC side |
| 93 | type: boolean |
| 94 | |
| 95 | mediatek,use-push-pull: |
| 96 | description: Use push-pull mode I/O config |
| 97 | type: boolean |
| 98 | |
| 99 | vbus-supply: |
| 100 | description: Phandle to the regulator providing power to SCL/SDA |
| 101 | |
| 102 | required: |
| 103 | - compatible |
| 104 | - reg |
| 105 | - clocks |
| 106 | - clock-names |
| 107 | - clock-div |
| 108 | - interrupts |
| 109 | |
| 110 | unevaluatedProperties: false |
| 111 | |
| 112 | examples: |
| 113 | - | |
| 114 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 115 | #include <dt-bindings/interrupt-controller/irq.h> |
| 116 | |
| 117 | i2c0: i2c@1100d000 { |
| 118 | compatible = "mediatek,mt6577-i2c"; |
| 119 | reg = <0x1100d000 0x70>, <0x11000300 0x80>; |
| 120 | interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>; |
| 121 | clocks = <&i2c0_ck>, <&ap_dma_ck>; |
| 122 | clock-names = "main", "dma"; |
| 123 | clock-div = <16>; |
| 124 | clock-frequency = <400000>; |
| 125 | mediatek,have-pmic; |
| 126 | |
| 127 | #address-cells = <1>; |
| 128 | #size-cells = <0>; |
| 129 | }; |