1 // SPDX-License-Identifier: GPL-2.0+
4 * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
12 FAN_TACHLIM_LSB = 0x48,
13 FAN_TACHLIM_MSB = 0x49,
17 void init_fan_controller(u8 addr)
21 /* set PWM Frequency to 2.5% resolution */
22 i2c_reg_write(addr, FAN_PWM_FREQ, 20);
24 /* set Tachometer Limit */
25 i2c_reg_write(addr, FAN_TACHLIM_LSB, 0x10);
26 i2c_reg_write(addr, FAN_TACHLIM_MSB, 0x0a);
28 /* enable Tach input */
29 val = i2c_reg_read(addr, FAN_CONFIG) | 0x04;
30 i2c_reg_write(addr, FAN_CONFIG, val);