Commit | Line | Data |
---|---|---|
1c301fc5 JC |
1 | This describes the interface for the ADT7475 driver: |
2 | ||
3 | (there are 4 fans, numbered fan1 to fan4): | |
4 | ||
5 | fanX_input Read the current speed of the fan (in RPMs) | |
6 | fanX_min Read/write the minimum speed of the fan. Dropping | |
7 | below this sets an alarm. | |
8 | ||
9 | (there are three PWMs, numbered pwm1 to pwm3): | |
10 | ||
11 | pwmX Read/write the current duty cycle of the PWM. Writes | |
12 | only have effect when auto mode is turned off (see | |
13 | below). Range is 0 - 255. | |
14 | ||
15 | pwmX_enable Fan speed control method: | |
16 | ||
17 | 0 - No control (fan at full speed) | |
18 | 1 - Manual fan speed control (using pwm[1-*]) | |
19 | 2 - Automatic fan speed control | |
20 | ||
21 | pwmX_auto_channels_temp Select which channels affect this PWM | |
22 | ||
23 | 1 - TEMP1 controls PWM | |
24 | 2 - TEMP2 controls PWM | |
25 | 4 - TEMP3 controls PWM | |
26 | 6 - TEMP2 and TEMP3 control PWM | |
27 | 7 - All three inputs control PWM | |
28 | ||
29 | pwmX_freq Read/write the PWM frequency in Hz. The number | |
30 | should be one of the following: | |
31 | ||
32 | 11 Hz | |
33 | 14 Hz | |
34 | 22 Hz | |
35 | 29 Hz | |
36 | 35 Hz | |
37 | 44 Hz | |
38 | 58 Hz | |
39 | 88 Hz | |
40 | ||
41 | pwmX_auto_point1_pwm Read/write the minimum PWM duty cycle in automatic mode | |
42 | ||
43 | pwmX_auto_point2_pwm Read/write the maximum PWM duty cycle in automatic mode | |
44 | ||
45 | (there are three temperature settings numbered temp1 to temp3): | |
46 | ||
47 | tempX_input Read the current temperature. The value is in milli | |
48 | degrees of Celsius. | |
49 | ||
50 | tempX_max Read/write the upper temperature limit - exceeding this | |
51 | will cause an alarm. | |
52 | ||
53 | tempX_min Read/write the lower temperature limit - exceeding this | |
54 | will cause an alarm. | |
55 | ||
56 | tempX_offset Read/write the temperature adjustment offset | |
57 | ||
58 | tempX_crit Read/write the THERM limit for remote1. | |
59 | ||
60 | tempX_crit_hyst Set the temperature value below crit where the | |
61 | fans will stay on - this helps drive the temperature | |
62 | low enough so it doesn't stay near the edge and | |
63 | cause THERM to keep tripping. | |
64 | ||
65 | tempX_auto_point1_temp Read/write the minimum temperature where the fans will | |
66 | turn on in automatic mode. | |
67 | ||
68 | tempX_auto_point2_temp Read/write the maximum temperature over which the fans | |
69 | will run in automatic mode. tempX_auto_point1_temp | |
70 | and tempX_auto_point2_temp together define the | |
71 | range of automatic control. | |
72 | ||
73 | tempX_alarm Read a 1 if the max/min alarm is set | |
74 | tempX_fault Read a 1 if either temp1 or temp3 diode has a fault | |
75 | ||
76 | (There are two voltage settings, in1 and in2): | |
77 | ||
78 | inX_input Read the current voltage on VCC. Value is in | |
79 | millivolts. | |
80 | ||
81 | inX_min read/write the minimum voltage limit. | |
82 | Dropping below this causes an alarm. | |
83 | ||
84 | inX_max read/write the maximum voltage limit. | |
85 | Exceeding this causes an alarm. | |
86 | ||
87 | inX_alarm Read a 1 if the max/min alarm is set. |