1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
25c3b6dc1SDirk Eibach /*
35c3b6dc1SDirk Eibach * (C) Copyright 2015
4d38826a3SMario Six * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
55c3b6dc1SDirk Eibach */
65c3b6dc1SDirk Eibach
75c3b6dc1SDirk Eibach #include <common.h>
85c3b6dc1SDirk Eibach #include <i2c.h>
95c3b6dc1SDirk Eibach
105c3b6dc1SDirk Eibach enum {
115c3b6dc1SDirk Eibach FAN_CONFIG = 0x03,
125c3b6dc1SDirk Eibach FAN_TACHLIM_LSB = 0x48,
135c3b6dc1SDirk Eibach FAN_TACHLIM_MSB = 0x49,
145c3b6dc1SDirk Eibach FAN_PWM_FREQ = 0x4D,
155c3b6dc1SDirk Eibach };
165c3b6dc1SDirk Eibach
init_fan_controller(u8 addr)175c3b6dc1SDirk Eibach void init_fan_controller(u8 addr)
185c3b6dc1SDirk Eibach {
195c3b6dc1SDirk Eibach int val;
205c3b6dc1SDirk Eibach
215c3b6dc1SDirk Eibach /* set PWM Frequency to 2.5% resolution */
225c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_PWM_FREQ, 20);
235c3b6dc1SDirk Eibach
245c3b6dc1SDirk Eibach /* set Tachometer Limit */
255c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_TACHLIM_LSB, 0x10);
265c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_TACHLIM_MSB, 0x0a);
275c3b6dc1SDirk Eibach
285c3b6dc1SDirk Eibach /* enable Tach input */
295c3b6dc1SDirk Eibach val = i2c_reg_read(addr, FAN_CONFIG) | 0x04;
305c3b6dc1SDirk Eibach i2c_reg_write(addr, FAN_CONFIG, val);
315c3b6dc1SDirk Eibach }
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