xref: /linux/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt (revision ab520be8cd5d56867fc95cfbc34b90880faf1f9d) 
1Texas Instruments - tlv320aic31xx Codec module
2
3The tlv320aic31xx serial control bus communicates through I2C protocols
4
5Required properties:
6
7- compatible - "string" - One of:
8    "ti,tlv320aic310x" - Generic TLV320AIC31xx with mono speaker amp
9    "ti,tlv320aic311x" - Generic TLV320AIC31xx with stereo speaker amp
10    "ti,tlv320aic3100" - TLV320AIC3100 (mono speaker amp, no MiniDSP)
11    "ti,tlv320aic3110" - TLV320AIC3110 (stereo speaker amp, no MiniDSP)
12    "ti,tlv320aic3120" - TLV320AIC3120 (mono speaker amp, MiniDSP)
13    "ti,tlv320aic3111" - TLV320AIC3111 (stereo speaker amp, MiniDSP)
14    "ti,tlv320dac3100" - TLV320DAC3100 (no ADC, mono speaker amp, no MiniDSP)
15    "ti,tlv320dac3101" - TLV320DAC3101 (no ADC, stereo speaker amp, no MiniDSP)
16
17- reg - <int> -  I2C slave address
18- HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply,
19  DVDD-supply : power supplies for the device as covered in
20  Documentation/devicetree/bindings/regulator/regulator.txt
21
22
23Optional properties:
24
25- gpio-reset - gpio pin number used for codec reset
26- ai31xx-micbias-vg - MicBias Voltage setting
27        1 or MICBIAS_2_0V - MICBIAS output is powered to 2.0V
28        2 or MICBIAS_2_5V - MICBIAS output is powered to 2.5V
29        3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD
30	If this node is not mentioned or if the value is unknown, then
31	micbias	is set to 2.0V.
32
33CODEC output pins:
34  * HPL
35  * HPR
36  * SPL, devices with stereo speaker amp
37  * SPR, devices with stereo speaker amp
38  * SPK, devices with mono speaker amp
39  * MICBIAS
40
41CODEC input pins:
42  * MIC1LP, devices with ADC
43  * MIC1RP, devices with ADC
44  * MIC1LM, devices with ADC
45  * AIN1, devices without ADC
46  * AIN2, devices without ADC
47
48The pins can be used in referring sound node's audio-routing property.
49
50Example:
51#include <dt-bindings/sound/tlv320aic31xx-micbias.h>
52
53tlv320aic31xx: tlv320aic31xx@18 {
54	compatible = "ti,tlv320aic311x";
55	reg = <0x18>;
56
57	ai31xx-micbias-vg = <MICBIAS_OFF>;
58
59	HPVDD-supply = <&regulator>;
60	SPRVDD-supply = <&regulator>;
61	SPLVDD-supply = <&regulator>;
62	AVDD-supply = <&regulator>;
63	IOVDD-supply = <&regulator>;
64	DVDD-supply = <&regulator>;
65};
66