blob: eefc95f22ea688d937b92f959cc9ef9887d6b29c
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 |