1 Kernel driver max6639 2 ===================== 3 4 Supported chips: 5 6 * Maxim MAX6639 7 8 Prefix: 'max6639' 9 10 Addresses scanned: I2C 0x2c, 0x2e, 0x2f 11 12 Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf 13 14 Authors: 15 - He Changqing <hechangqing@semptian.com> 16 - Roland Stigge <stigge@antcom.de> 17 18 Description 19 ----------- 20 21 This driver implements support for the Maxim MAX6639. This chip is a 2-channel 22 temperature monitor with dual PWM fan speed controller. It can monitor its own 23 temperature and one external diode-connected transistor or two external 24 diode-connected transistors. 25 26 The following device attributes are implemented via sysfs: 27 28 ====================== ==== =================================================== 29 Attribute R/W Contents 30 ====================== ==== =================================================== 31 temp1_input R Temperature channel 1 input (0..150 C) 32 temp2_input R Temperature channel 2 input (0..150 C) 33 temp1_fault R Temperature channel 1 diode fault 34 temp2_fault R Temperature channel 2 diode fault 35 temp1_max RW Set THERM temperature for input 1 36 (in C, see datasheet) 37 temp2_max RW Set THERM temperature for input 2 38 temp1_crit RW Set ALERT temperature for input 1 39 temp2_crit RW Set ALERT temperature for input 2 40 temp1_emergency RW Set OT temperature for input 1 41 (in C, see datasheet) 42 temp2_emergency RW Set OT temperature for input 2 43 pwm1 RW Fan 1 target duty cycle (0..255) 44 pwm2 RW Fan 2 target duty cycle (0..255) 45 fan1_input R TACH1 fan tachometer input (in RPM) 46 fan2_input R TACH2 fan tachometer input (in RPM) 47 fan1_fault R Fan 1 fault 48 fan2_fault R Fan 2 fault 49 temp1_max_alarm R Alarm on THERM temperature on channel 1 50 temp2_max_alarm R Alarm on THERM temperature on channel 2 51 temp1_crit_alarm R Alarm on ALERT temperature on channel 1 52 temp2_crit_alarm R Alarm on ALERT temperature on channel 2 53 temp1_emergency_alarm R Alarm on OT temperature on channel 1 54 temp2_emergency_alarm R Alarm on OT temperature on channel 2 55 ====================== ==== ===================================================
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.