1*5c3b6dc1SDirk Eibach /*
2*5c3b6dc1SDirk Eibach * (C) Copyright 2015
3*5c3b6dc1SDirk Eibach * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
4*5c3b6dc1SDirk Eibach *
5*5c3b6dc1SDirk Eibach * SPDX-License-Identifier: GPL-2.0+
6*5c3b6dc1SDirk Eibach */
7*5c3b6dc1SDirk Eibach
8*5c3b6dc1SDirk Eibach #include <common.h>
9*5c3b6dc1SDirk Eibach #include <i2c.h>
10*5c3b6dc1SDirk Eibach
11*5c3b6dc1SDirk Eibach enum {
12*5c3b6dc1SDirk Eibach FAN_CONFIG = 0x03,
13*5c3b6dc1SDirk Eibach FAN_TACHLIM_LSB = 0x48,
14*5c3b6dc1SDirk Eibach FAN_TACHLIM_MSB = 0x49,
15*5c3b6dc1SDirk Eibach FAN_PWM_FREQ = 0x4D,
16*5c3b6dc1SDirk Eibach };
17*5c3b6dc1SDirk Eibach
init_fan_controller(u8 addr)18*5c3b6dc1SDirk Eibach void init_fan_controller(u8 addr)
19*5c3b6dc1SDirk Eibach {
20*5c3b6dc1SDirk Eibach int val;
21*5c3b6dc1SDirk Eibach
22*5c3b6dc1SDirk Eibach /* set PWM Frequency to 2.5% resolution */
23*5c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_PWM_FREQ, 20);
24*5c3b6dc1SDirk Eibach
25*5c3b6dc1SDirk Eibach /* set Tachometer Limit */
26*5c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_TACHLIM_LSB, 0x10);
27*5c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_TACHLIM_MSB, 0x0a);
28*5c3b6dc1SDirk Eibach
29*5c3b6dc1SDirk Eibach /* enable Tach input */
30*5c3b6dc1SDirk Eibach val = i2c_reg_read(addr, FAN_CONFIG) | 0x04;
31*5c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_CONFIG, val);
32*5c3b6dc1SDirk Eibach }
33