tps6586x.h 1.5 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * (C) Copyright 2010,2011
  4. * NVIDIA Corporation <www.nvidia.com>
  5. */
  6. #ifndef _TPS6586X_H_
  7. #define _TPS6586X_H_
  8. struct udevice;
  9. enum {
  10. /* SM0-2 PWM/PFM Mode Selection */
  11. TPS6586X_PWM_SM0 = 1 << 0,
  12. TPS6586X_PWM_SM1 = 1 << 1,
  13. TPS6586X_PWM_SM2 = 1 << 2,
  14. };
  15. /**
  16. * Enable PWM mode for selected SM0-2
  17. *
  18. * @param mask Mask of synchronous converter to enable (TPS6586X_PWM_...)
  19. * @return 0 if ok, -1 on error
  20. */
  21. int tps6586x_set_pwm_mode(int mask);
  22. /**
  23. * Adjust SM0 and SM1 voltages to the given targets in incremental steps.
  24. *
  25. * @param sm0_target Target voltage for SM0 in 25mW units, 0=725mV, 31=1.5V
  26. * @param sm1_target Target voltage for SM1 in 25mW units, 0=725mV, 31=1.5V
  27. * @param step Amount to change voltage in each step, in 25mW units
  28. * @param rate Slew ratein mV/us: 0=instantly, 1=0.11, 2=0.22,
  29. * 3=0.44, 4=0.88, 5=1.76, 6=3.52, 7=7.04
  30. * @param min_sm0_over_sm1 Minimum amount by which sm0 must exceed sm1.
  31. * If this condition is not met, no adjustment will be
  32. * done and an error will be reported. Use -1 to skip
  33. * this check.
  34. * @return 0 if ok, -1 on error
  35. */
  36. int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
  37. int min_sm0_over_sm1);
  38. /**
  39. * Set up the TPS6586X I2C bus number. This will be used for all operations
  40. * on the device. This function must be called before using other functions.
  41. *
  42. * @param bus I2C bus containing the TPS6586X chip
  43. * @return 0 (always succeeds)
  44. */
  45. int tps6586x_init(struct udevice *bus);
  46. #endif /* _TPS6586X_H_ */