include/tps6586x.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  *  (C) Copyright 2010,2011
   4  *  NVIDIA Corporation <www.nvidia.com>
   5  */
   6
   7 #ifndef _TPS6586X_H_
   8 #define _TPS6586X_H_
   9
  10 struct udevice;
  11
  12 enum {
  13         /* SM0-2 PWM/PFM Mode Selection */
  14         TPS6586X_PWM_SM0        = 1 << 0,
  15         TPS6586X_PWM_SM1        = 1 << 1,
  16         TPS6586X_PWM_SM2        = 1 << 2,
  17 };
  18
  19 /**
  20  * Enable PWM mode for selected SM0-2
  21  *
  22  * @param mask  Mask of synchronous converter to enable (TPS6586X_PWM_...)
  23  * Return: 0 if ok, -1 on error
  24  */
  25 int tps6586x_set_pwm_mode(int mask);
  26
  27 /**
  28  * Adjust SM0 and SM1 voltages to the given targets in incremental steps.
  29  *
  30  * @param sm0_target    Target voltage for SM0 in 25mW units, 0=725mV, 31=1.5V
  31  * @param sm1_target    Target voltage for SM1 in 25mW units, 0=725mV, 31=1.5V
  32  * @param step          Amount to change voltage in each step, in 25mW units
  33  * @param rate          Slew ratein mV/us: 0=instantly, 1=0.11, 2=0.22,
  34  *                      3=0.44, 4=0.88, 5=1.76, 6=3.52, 7=7.04
  35  * @param min_sm0_over_sm1      Minimum amount by which sm0 must exceed sm1.
  36  *                      If this condition is not met, no adjustment will be
  37  *                      done and an error will be reported. Use -1 to skip
  38  *                      this check.
  39  * Return: 0 if ok, -1 on error
  40  */
  41 int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
  42                             int min_sm0_over_sm1);
  43
  44 /**
  45  * Set up the TPS6586X I2C bus number. This will be used for all operations
  46  * on the device. This function must be called before using other functions.
  47  *
  48  * @param bus   I2C bus containing the TPS6586X chip
  49  * Return: 0 (always succeeds)
  50  */
  51 int tps6586x_init(struct udevice *bus);
  52
  53 #endif  /* _TPS6586X_H_ */