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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015
* Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
*/
#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);
}
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