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| /*
| * (C) Copyright 2015
| * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
| *
| * SPDX-License-Identifier: GPL-2.0+
| */
|
| #include <common.h>
| #include <i2c.h>
|
| enum {
| FAN_CONFIG = 0x03,
| FAN_TACHLIM_LSB = 0x48,
| FAN_TACHLIM_MSB = 0x49,
| FAN_PWM_FREQ = 0x4D,
| };
|
| void init_fan_controller(u8 addr)
| {
| int val;
|
| /* set PWM Frequency to 2.5% resolution */
| i2c_reg_write(addr, FAN_PWM_FREQ, 20);
|
| /* set Tachometer Limit */
| i2c_reg_write(addr, FAN_TACHLIM_LSB, 0x10);
| i2c_reg_write(addr, FAN_TACHLIM_MSB, 0x0a);
|
| /* enable Tach input */
| val = i2c_reg_read(addr, FAN_CONFIG) | 0x04;
| i2c_reg_write(addr, FAN_CONFIG, val);
| }
|
|
