| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/i2c/apple,i2c.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Apple/PASemi I2C controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Sven Peter <sven@svenpeter.dev> |
| 11 | |
| 12 | description: | |
| 13 | Apple SoCs such as the M1 come with a I2C controller based on the one found |
| 14 | in machines with P. A. Semi's PWRficient processors. |
| 15 | The bus is used to communicate with e.g. USB PD chips or the speaker |
| 16 | amp. |
| 17 | |
| 18 | allOf: |
| 19 | - $ref: /schemas/i2c/i2c-controller.yaml# |
| 20 | |
| 21 | properties: |
| 22 | compatible: |
| 23 | items: |
| 24 | - enum: |
| 25 | - apple,t8103-i2c |
| 26 | - apple,t8112-i2c |
| 27 | - apple,t6000-i2c |
| 28 | - const: apple,i2c |
| 29 | |
| 30 | reg: |
| 31 | maxItems: 1 |
| 32 | |
| 33 | clocks: |
| 34 | items: |
| 35 | - description: I2C bus reference clock |
| 36 | |
| 37 | interrupts: |
| 38 | maxItems: 1 |
| 39 | |
| 40 | clock-frequency: |
| 41 | description: | |
| 42 | Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be |
| 43 | used. This frequency is generated by dividing the reference clock. |
| 44 | Allowed values are between ref_clk/(16*4) and ref_clk/(16*255). |
| 45 | |
| 46 | power-domains: |
| 47 | maxItems: 1 |
| 48 | |
| 49 | required: |
| 50 | - compatible |
| 51 | - reg |
| 52 | - clocks |
| 53 | - interrupts |
| 54 | |
| 55 | unevaluatedProperties: false |
| 56 | |
| 57 | examples: |
| 58 | - | |
| 59 | i2c@35010000 { |
| 60 | compatible = "apple,t8103-i2c", "apple,i2c"; |
| 61 | reg = <0x35010000 0x4000>; |
| 62 | interrupt-parent = <&aic>; |
| 63 | interrupts = <0 627 4>; |
| 64 | clocks = <&ref_clk>; |
| 65 | #address-cells = <1>; |
| 66 | #size-cells = <0>; |
| 67 | }; |