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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
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# SPDX-License-Identifier: (GPL-2.0 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/apple,i2c.yaml#

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

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title: Apple/PASemi I2C controller

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maintainers:

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  - Sven Peter <sven@svenpeter.dev>

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description: |

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  Apple SoCs such as the M1 come with a I2C controller based on the one found

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  in machines with P. A. Semi's PWRficient processors.

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  The bus is used to communicate with e.g. USB PD chips or the speaker

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  amp.

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allOf:

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

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properties:

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  compatible:

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    items:

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      - enum:

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          - apple,s5l8960x-i2c

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          - apple,t7000-i2c

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          - apple,s8000-i2c

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          - apple,t8010-i2c

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          - apple,t8015-i2c

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          - apple,t8103-i2c

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          - apple,t8112-i2c

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          - apple,t6000-i2c

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      - const: apple,i2c

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  reg:

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    maxItems: 1

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  clocks:

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    items:

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      - description: I2C bus reference clock

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  interrupts:

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    maxItems: 1

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  clock-frequency:

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    description: |

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      Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be

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      used. This frequency is generated by dividing the reference clock.

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      Allowed values are between ref_clk/(16*4) and ref_clk/(16*255).

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  power-domains:

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    maxItems: 1

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required:

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  - compatible

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  - reg

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  - clocks

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  - interrupts

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unevaluatedProperties: false

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examples:

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  - |

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    i2c@35010000 {

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      compatible = "apple,t8103-i2c", "apple,i2c";

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      reg = <0x35010000 0x4000>;

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      interrupt-parent = <&aic>;

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      interrupts = <0 627 4>;

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      clocks = <&ref_clk>;

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      #address-cells = <1>;

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      #size-cells = <0>;

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    };

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