1*df7c4a8cSSven Peter# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2*df7c4a8cSSven Peter%YAML 1.2 3*df7c4a8cSSven Peter--- 4*df7c4a8cSSven Peter$id: "http://devicetree.org/schemas/i2c/apple,i2c.yaml#" 5*df7c4a8cSSven Peter$schema: "http://devicetree.org/meta-schemas/core.yaml#" 6*df7c4a8cSSven Peter 7*df7c4a8cSSven Petertitle: Apple/PASemi I2C controller 8*df7c4a8cSSven Peter 9*df7c4a8cSSven Petermaintainers: 10*df7c4a8cSSven Peter - Sven Peter <sven@svenpeter.dev> 11*df7c4a8cSSven Peter 12*df7c4a8cSSven Peterdescription: | 13*df7c4a8cSSven Peter Apple SoCs such as the M1 come with a I2C controller based on the one found 14*df7c4a8cSSven Peter in machines with P. A. Semi's PWRficient processors. 15*df7c4a8cSSven Peter The bus is used to communicate with e.g. USB PD chips or the speaker 16*df7c4a8cSSven Peter amp. 17*df7c4a8cSSven Peter 18*df7c4a8cSSven PeterallOf: 19*df7c4a8cSSven Peter - $ref: /schemas/i2c/i2c-controller.yaml# 20*df7c4a8cSSven Peter 21*df7c4a8cSSven Peterproperties: 22*df7c4a8cSSven Peter compatible: 23*df7c4a8cSSven Peter enum: 24*df7c4a8cSSven Peter - apple,t8103-i2c 25*df7c4a8cSSven Peter - apple,i2c 26*df7c4a8cSSven Peter 27*df7c4a8cSSven Peter reg: 28*df7c4a8cSSven Peter maxItems: 1 29*df7c4a8cSSven Peter 30*df7c4a8cSSven Peter clocks: 31*df7c4a8cSSven Peter items: 32*df7c4a8cSSven Peter - description: I2C bus reference clock 33*df7c4a8cSSven Peter 34*df7c4a8cSSven Peter interrupts: 35*df7c4a8cSSven Peter maxItems: 1 36*df7c4a8cSSven Peter 37*df7c4a8cSSven Peter clock-frequency: 38*df7c4a8cSSven Peter description: | 39*df7c4a8cSSven Peter Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be 40*df7c4a8cSSven Peter used. This frequency is generated by dividing the reference clock. 41*df7c4a8cSSven Peter Allowed values are between ref_clk/(16*4) and ref_clk/(16*255). 42*df7c4a8cSSven Peter 43*df7c4a8cSSven Peterrequired: 44*df7c4a8cSSven Peter - compatible 45*df7c4a8cSSven Peter - reg 46*df7c4a8cSSven Peter - clocks 47*df7c4a8cSSven Peter - interrupts 48*df7c4a8cSSven Peter 49*df7c4a8cSSven PeterunevaluatedProperties: false 50*df7c4a8cSSven Peter 51*df7c4a8cSSven Peterexamples: 52*df7c4a8cSSven Peter - | 53*df7c4a8cSSven Peter i2c@35010000 { 54*df7c4a8cSSven Peter compatible = "apple,t8103-i2c"; 55*df7c4a8cSSven Peter reg = <0x35010000 0x4000>; 56*df7c4a8cSSven Peter interrupt-parent = <&aic>; 57*df7c4a8cSSven Peter interrupts = <0 627 4>; 58*df7c4a8cSSven Peter clocks = <&ref_clk>; 59*df7c4a8cSSven Peter #address-cells = <1>; 60*df7c4a8cSSven Peter #size-cells = <0>; 61*df7c4a8cSSven Peter }; 62