1# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
2# Copyright (C) 2019 Texas Instruments Incorporated
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/sound/tlv320adcx140.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Texas Instruments TLV320ADCX140 Quad Channel Analog-to-Digital Converter
9
10maintainers:
11  - Dan Murphy <dmurphy@ti.com>
12
13description: |
14  The TLV320ADCX140 are multichannel (4-ch analog recording or 8-ch digital
15  PDM microphones recording), high-performance audio, analog-to-digital
16  converter (ADC) with analog inputs supporting up to 2V RMS. The TLV320ADCX140
17  family supports line and  microphone Inputs, and offers a programmable
18  microphone bias or supply voltage generation.
19
20  Specifications can be found at:
21    http://www.ti.com/lit/ds/symlink/tlv320adc3140.pdf
22    http://www.ti.com/lit/ds/symlink/tlv320adc5140.pdf
23    http://www.ti.com/lit/ds/symlink/tlv320adc6140.pdf
24
25properties:
26  compatible:
27    oneOf:
28      - const: ti,tlv320adc3140
29      - const: ti,tlv320adc5140
30      - const: ti,tlv320adc6140
31
32  reg:
33    maxItems: 1
34    description: |
35       I2C addresss of the device can be one of these 0x4c, 0x4d, 0x4e or 0x4f
36
37  reset-gpios:
38    description: |
39       GPIO used for hardware reset.
40
41  areg-supply:
42      description: |
43       Regulator with AVDD at 3.3V.  If not defined then the internal regulator
44       is enabled.
45
46  ti,mic-bias-source:
47    description: |
48       Indicates the source for MIC Bias.
49       0 - Mic bias is set to VREF
50       1 - Mic bias is set to VREF × 1.096
51       6 - Mic bias is set to AVDD
52    allOf:
53      - $ref: /schemas/types.yaml#/definitions/uint32
54      - enum: [0, 1, 6]
55
56  ti,vref-source:
57    description: |
58       Indicates the source for MIC Bias.
59       0 - Set VREF to 2.75V
60       1 - Set VREF to 2.5V
61       2 - Set VREF to 1.375V
62    allOf:
63      - $ref: /schemas/types.yaml#/definitions/uint32
64      - enum: [0, 1, 2]
65
66required:
67  - compatible
68  - reg
69
70examples:
71  - |
72    #include <dt-bindings/gpio/gpio.h>
73    i2c0 {
74      #address-cells = <1>;
75      #size-cells = <0>;
76      codec: codec@4c {
77        compatible = "ti,tlv320adc5140";
78        reg = <0x4c>;
79        ti,mic-bias-source = <6>;
80        reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
81      };
82    };
83