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