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
7 title: Cirrus Logic cs4234 audio CODEC
8
9 maintainers:
10 - patches@opensource.cirrus.com
11
12 description:
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
26 properties:
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
50 required:
51 - compatible
52 - reg
53 - VA-supply
54 - VL-supply
55
56 additionalProperties: false
57
58 examples:
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 };
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