1# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/cirrus,cs4234.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Cirrus Logic cs4234 audio CODEC 8 9maintainers: 10 - patches@opensource.cirrus.com 11 12description: 13 The CS4234 is a highly versatile CODEC that combines 4 channels of 14 high performance analog to digital conversion, 4 channels of high 15 performance digital to analog conversion for audio, and 1 channel of 16 digital to analog conversion to provide a nondelayed audio reference 17 signal to an external Class H tracking power supply. If not used to 18 drive a tracking power supply, the 5th DAC can instead be used as a 19 standard audio grade DAC, with performance specifications identical 20 to that of the 4 DACs in the audio path. Additionally, the CS4234 21 includes tunable group delay for each of the 4 audio DAC paths to 22 provide lead time for the external switch-mode power supply, and a 23 nondelayed path into the DAC outputs for input signals requiring a 24 low-latency path to the outputs. 25 26properties: 27 compatible: 28 enum: 29 - cirrus,cs4234 30 31 reg: 32 description: 33 The 7-bit I2C address depends on the state of the ADx pins, in 34 binary given by [0 0 1 0 AD2 AD1 AD0 0]. 35 items: 36 minimum: 0x10 37 maximum: 0x17 38 39 VA-supply: 40 description: 41 Analogue power supply. 42 43 VL-supply: 44 description: 45 Interface power supply. 46 47 reset-gpios: 48 maxItems: 1 49 50required: 51 - compatible 52 - reg 53 - VA-supply 54 - VL-supply 55 56additionalProperties: false 57 58examples: 59 - | 60 i2c@e0004000 { 61 #address-cells = <1>; 62 #size-cells = <0>; 63 reg = <0xe0004000 0x1000>; 64 65 cs4234: codec@11 { 66 compatible = "cirrus,cs4234"; 67 reg = <0x11>; 68 69 VA-supply = <&vdd3v3>; 70 VL-supply = <&vdd3v3>; 71 72 reset-gpios = <&gpio 0>; 73 }; 74 }; 75