| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/i2c/apple,i2c.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Apple/PASemi I2C controller |
| |
| maintainers: |
| - Sven Peter <sven@svenpeter.dev> |
| |
| description: | |
| Apple SoCs such as the M1 come with a I2C controller based on the one found |
| in machines with P. A. Semi's PWRficient processors. |
| The bus is used to communicate with e.g. USB PD chips or the speaker |
| amp. |
| |
| allOf: |
| - $ref: /schemas/i2c/i2c-controller.yaml# |
| |
| properties: |
| compatible: |
| items: |
| - enum: |
| - apple,t8103-i2c |
| - apple,t8112-i2c |
| - apple,t6000-i2c |
| - const: apple,i2c |
| |
| reg: |
| maxItems: 1 |
| |
| clocks: |
| items: |
| - description: I2C bus reference clock |
| |
| interrupts: |
| maxItems: 1 |
| |
| clock-frequency: |
| description: | |
| Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be |
| used. This frequency is generated by dividing the reference clock. |
| Allowed values are between ref_clk/(16*4) and ref_clk/(16*255). |
| |
| power-domains: |
| maxItems: 1 |
| |
| required: |
| - compatible |
| - reg |
| - clocks |
| - interrupts |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| i2c@35010000 { |
| compatible = "apple,t8103-i2c", "apple,i2c"; |
| reg = <0x35010000 0x4000>; |
| interrupt-parent = <&aic>; |
| interrupts = <0 627 4>; |
| clocks = <&ref_clk>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| }; |
