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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: MediaTek I2C controller

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description:

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  This driver interfaces with the native I2C controller present in

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  various MediaTek SoCs.

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allOf:

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  - $ref: /schemas/i2c/i2c-controller.yaml#

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maintainers:

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  - Qii Wang <qii.wang@mediatek.com>

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properties:

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  compatible:

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    oneOf:

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      - const: mediatek,mt2712-i2c

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      - const: mediatek,mt6577-i2c

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      - const: mediatek,mt6589-i2c

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      - const: mediatek,mt7622-i2c

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      - const: mediatek,mt7981-i2c

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      - const: mediatek,mt7986-i2c

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      - const: mediatek,mt8168-i2c

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      - const: mediatek,mt8173-i2c

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      - const: mediatek,mt8183-i2c

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      - const: mediatek,mt8186-i2c

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      - const: mediatek,mt8188-i2c

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      - const: mediatek,mt8192-i2c

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      - items:

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          - enum:

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              - mediatek,mt7629-i2c

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              - mediatek,mt8516-i2c

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          - const: mediatek,mt2712-i2c

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      - items:

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          - enum:

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              - mediatek,mt2701-i2c

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              - mediatek,mt6797-i2c

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              - mediatek,mt7623-i2c

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          - const: mediatek,mt6577-i2c

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      - items:

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          - enum:

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              - mediatek,mt8365-i2c

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          - const: mediatek,mt8168-i2c

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      - items:

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          - enum:

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              - mediatek,mt6795-i2c

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          - const: mediatek,mt8173-i2c

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      - items:

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          - enum:

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              - mediatek,mt6893-i2c

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              - mediatek,mt8195-i2c

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          - const: mediatek,mt8192-i2c

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  reg:

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    items:

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      - description: Physical base address

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      - description: DMA base address

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  interrupts:

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    maxItems: 1

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  clocks:

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    minItems: 2

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    items:

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      - description: Main clock for I2C bus

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      - description: Clock for I2C via DMA

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      - description: Bus arbitrator clock

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      - description: Clock for I2C from PMIC

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  clock-names:

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    minItems: 2

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    items:

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      - const: main

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      - const: dma

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      - const: arb

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      - const: pmic

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  clock-div:

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    $ref: /schemas/types.yaml#/definitions/uint32

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    description: Frequency divider of clock source in I2C module

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  clock-frequency:

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    default: 100000

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    description:

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      SCL frequency to use (in Hz). If omitted, 100kHz is used.

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  mediatek,have-pmic:

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    description: Platform controls I2C from PMIC side

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    type: boolean

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  mediatek,use-push-pull:

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    description: Use push-pull mode I/O config

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    type: boolean

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  vbus-supply:

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    description: Phandle to the regulator providing power to SCL/SDA

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required:

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  - compatible

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  - reg

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  - clocks

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  - clock-names

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  - clock-div

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  - interrupts

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unevaluatedProperties: false

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examples:

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  - |

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    #include <dt-bindings/interrupt-controller/arm-gic.h>

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    #include <dt-bindings/interrupt-controller/irq.h>

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    i2c0: i2c@1100d000 {

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      compatible = "mediatek,mt6577-i2c";

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      reg = <0x1100d000 0x70>, <0x11000300 0x80>;

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      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;

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      clocks = <&i2c0_ck>, <&ap_dma_ck>;

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      clock-names = "main", "dma";

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      clock-div = <16>;

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      clock-frequency = <400000>;

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      mediatek,have-pmic;

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      #address-cells = <1>;

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      #size-cells = <0>;

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    };

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