Commit | Line | Data |
---|---|---|
a5b79d62 | 1 | Kernel driver max6639 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
b04f2f7d | 5 | |
a5b79d62 | 6 | * Maxim MAX6639 |
b04f2f7d | 7 | |
a5b79d62 | 8 | Prefix: 'max6639' |
b04f2f7d | 9 | |
a5b79d62 | 10 | Addresses scanned: I2C 0x2c, 0x2e, 0x2f |
b04f2f7d | 11 | |
06f7d6e7 | 12 | Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf |
a5b79d62 | 13 | |
14 | Authors: | |
b04f2f7d MCC |
15 | - He Changqing <hechangqing@semptian.com> |
16 | - Roland Stigge <stigge@antcom.de> | |
a5b79d62 | 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 | ||
b04f2f7d | 28 | ====================== ==== =================================================== |
a5b79d62 | 29 | Attribute R/W Contents |
b04f2f7d | 30 | ====================== ==== =================================================== |
a5b79d62 | 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 | |
b04f2f7d | 36 | (in C, see datasheet) |
a5b79d62 | 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 | |
b04f2f7d | 41 | (in C, see datasheet) |
a5b79d62 | 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 | |
b04f2f7d | 55 | ====================== ==== =================================================== |