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 7title: Apple/PASemi I2C controller 8 9maintainers: 10 - Sven Peter <sven@svenpeter.dev> 11 12description: | 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 18allOf: 19 - $ref: /schemas/i2c/i2c-controller.yaml# 20 21properties: 22 compatible: 23 oneOf: 24 - items: 25 - enum: 26 - apple,t6020-i2c 27 - apple,t6030-i2c 28 - apple,t6031-i2c 29 - apple,t8122-i2c 30 - const: apple,t8103-i2c 31 - items: 32 - enum: 33 # Do not add additional SoC to this list. 34 - apple,s5l8960x-i2c 35 - apple,t7000-i2c 36 - apple,s8000-i2c 37 - apple,t8010-i2c 38 - apple,t8015-i2c 39 - apple,t8103-i2c 40 - apple,t8112-i2c 41 - apple,t6000-i2c 42 - const: apple,i2c 43 44 reg: 45 maxItems: 1 46 47 clocks: 48 items: 49 - description: I2C bus reference clock 50 51 interrupts: 52 maxItems: 1 53 54 clock-frequency: 55 description: | 56 Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be 57 used. This frequency is generated by dividing the reference clock. 58 Allowed values are between ref_clk/(16*4) and ref_clk/(16*255). 59 60 power-domains: 61 maxItems: 1 62 63required: 64 - compatible 65 - reg 66 - clocks 67 - interrupts 68 69unevaluatedProperties: false 70 71examples: 72 - | 73 i2c@35010000 { 74 compatible = "apple,t8103-i2c", "apple,i2c"; 75 reg = <0x35010000 0x4000>; 76 interrupt-parent = <&aic>; 77 interrupts = <0 627 4>; 78 clocks = <&ref_clk>; 79 #address-cells = <1>; 80 #size-cells = <0>; 81 }; 82