ti,tas5086.txt 1.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748
  1. Texas Instruments TAS5086 6-channel PWM Processor
  2. Required properties:
  3. - compatible: Should contain "ti,tas5086".
  4. - reg: The i2c address. Should contain <0x1b>.
  5. Optional properties:
  6. - reset-gpio: A GPIO spec to define which pin is connected to the
  7. chip's !RESET pin. If specified, the driver will
  8. assert a hardware reset at probe time.
  9. - ti,charge-period: This property should contain the time in microseconds
  10. that closely matches the external single-ended
  11. split-capacitor charge period. The hardware chip
  12. waits for this period of time before starting the
  13. PWM signals. This helps reduce pops and clicks.
  14. When not specified, the hardware default of 1300ms
  15. is retained.
  16. - ti,mid-z-channel-X: Boolean properties, X being a number from 1 to 6.
  17. If given, channel X will start with the Mid-Z start
  18. sequence, otherwise the default Low-Z scheme is used.
  19. The correct configuration depends on how the power
  20. stages connected to the PWM output pins work. Not all
  21. power stages are compatible to Mid-Z - please refer
  22. to the datasheets for more details.
  23. Most systems should not set any of these properties.
  24. - avdd-supply: Power supply for AVDD, providing 3.3V
  25. - dvdd-supply: Power supply for DVDD, providing 3.3V
  26. Examples:
  27. i2c_bus {
  28. tas5086@1b {
  29. compatible = "ti,tas5086";
  30. reg = <0x1b>;
  31. reset-gpio = <&gpio 23 0>;
  32. ti,charge-period = <156000>;
  33. avdd-supply = <&vdd_3v3_reg>;
  34. dvdd-supply = <&vdd_3v3_reg>;
  35. };
  36. };