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tlv320aic31xx.txt

tlv320aic31xx.txt 1.8 KB
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  1. Texas Instruments - tlv320aic31xx Codec module
    2. 

  2. 

  3. The tlv320aic31xx serial control bus communicates through I2C protocols
    4. 

  4. 

  5. Required properties:
    6. 

  6. 

  7. - compatible - "string" - One of:
    8. 

  8.     "ti,tlv320aic310x" - Generic TLV320AIC31xx with mono speaker amp
    9. 

  9.     "ti,tlv320aic311x" - Generic TLV320AIC31xx with stereo speaker amp
    10. 

  10.     "ti,tlv320aic3100" - TLV320AIC3100 (mono speaker amp, no MiniDSP)
    11. 

  11.     "ti,tlv320aic3110" - TLV320AIC3110 (stereo speaker amp, no MiniDSP)
    12. 

  12.     "ti,tlv320aic3120" - TLV320AIC3120 (mono speaker amp, MiniDSP)
    13. 

  13.     "ti,tlv320aic3111" - TLV320AIC3111 (stereo speaker amp, MiniDSP)
    14. 

  14. 

  15. - reg - <int> -  I2C slave address
    16. 

  16. - HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply,
    17. 

  17.   DVDD-supply : power supplies for the device as covered in
    18. 

  18.   Documentation/devicetree/bindings/regulator/regulator.txt
    19. 

  19. 

  20. 

  21. Optional properties:
    22. 

  22. 

  23. - gpio-reset - gpio pin number used for codec reset
    24. 

  24. - ai31xx-micbias-vg - MicBias Voltage setting
    25. 

  25.         1 or MICBIAS_2_0V - MICBIAS output is powered to 2.0V
    26. 

  26.         2 or MICBIAS_2_5V - MICBIAS output is powered to 2.5V
    27. 

  27.         3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD
    28. 

  28. 	If this node is not mentioned or if the value is unknown, then
    29. 

  29. 	micbias	is set to 2.0V.
    30. 

  30. 

  31. CODEC output pins:
    32. 

  32.   * HPL
    33. 

  33.   * HPR
    34. 

  34.   * SPL, devices with stereo speaker amp
    35. 

  35.   * SPR, devices with stereo speaker amp
    36. 

  36.   * SPK, devices with mono speaker amp
    37. 

  37.   * MICBIAS
    38. 

  38. 

  39. CODEC input pins:
    40. 

  40.   * MIC1LP
    41. 

  41.   * MIC1RP
    42. 

  42.   * MIC1LM
    43. 

  43. 

  44. The pins can be used in referring sound node's audio-routing property.
    45. 

  45. 

  46. Example:
    47. 

  47. #include <dt-bindings/sound/tlv320aic31xx-micbias.h>
    48. 

  48. 

  49. tlv320aic31xx: tlv320aic31xx@18 {
    50. 

  50. 	compatible = "ti,tlv320aic311x";
    51. 

  51. 	reg = <0x18>;
    52. 

  52. 

  53. 	ai31xx-micbias-vg = <MICBIAS_OFF>;
    54. 

  54. 

  55. 	HPVDD-supply = <&regulator>;
    56. 

  56. 	SPRVDD-supply = <&regulator>;
    57. 

  57. 	SPLVDD-supply = <&regulator>;
    58. 

  58. 	AVDD-supply = <&regulator>;
    59. 

  59. 	IOVDD-supply = <&regulator>;
    60. 

  60. 	DVDD-supply = <&regulator>;
    61. 

  61. };
    62.