tlv320aic31xx.txt (2444B)
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- reset-gpios - GPIO specification for the active low RESET input. 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- ai31xx-ocmv - output common-mode voltage setting 33 0 - 1.35V, 34 1 - 1.5V, 35 2 - 1.65V, 36 3 - 1.8V 37 38Deprecated properties: 39 40- gpio-reset - gpio pin number used for codec reset 41 42CODEC output pins: 43 * HPL 44 * HPR 45 * SPL, devices with stereo speaker amp 46 * SPR, devices with stereo speaker amp 47 * SPK, devices with mono speaker amp 48 * MICBIAS 49 50CODEC input pins: 51 * MIC1LP, devices with ADC 52 * MIC1RP, devices with ADC 53 * MIC1LM, devices with ADC 54 * AIN1, devices without ADC 55 * AIN2, devices without ADC 56 57The pins can be used in referring sound node's audio-routing property. 58 59Example: 60#include <dt-bindings/gpio/gpio.h> 61#include <dt-bindings/sound/tlv320aic31xx.h> 62 63tlv320aic31xx: tlv320aic31xx@18 { 64 compatible = "ti,tlv320aic311x"; 65 reg = <0x18>; 66 67 ai31xx-micbias-vg = <MICBIAS_OFF>; 68 69 reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>; 70 71 HPVDD-supply = <®ulator>; 72 SPRVDD-supply = <®ulator>; 73 SPLVDD-supply = <®ulator>; 74 AVDD-supply = <®ulator>; 75 IOVDD-supply = <®ulator>; 76 DVDD-supply = <®ulator>; 77};