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1 | Kernel driver ltc4215 | ||
2 | ===================== | ||
3 | |||
4 | Supported chips: | ||
5 | * Linear Technology LTC4215 | ||
6 | Prefix: 'ltc4215' | ||
7 | Addresses scanned: 0x44 | ||
8 | Datasheet: | ||
9 | http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1006,C1163,P17572,D12697 | ||
10 | |||
11 | Author: Ira W. Snyder <iws@ovro.caltech.edu> | ||
12 | |||
13 | |||
14 | Description | ||
15 | ----------- | ||
16 | |||
17 | The LTC4215 controller allows a board to be safely inserted and removed | ||
18 | from a live backplane. | ||
19 | |||
20 | |||
21 | Usage Notes | ||
22 | ----------- | ||
23 | |||
24 | This driver does not probe for LTC4215 devices, due to the fact that some | ||
25 | of the possible addresses are unfriendly to probing. You will need to use | ||
26 | the "force" parameter to tell the driver where to find the device. | ||
27 | |||
28 | Example: the following will load the driver for an LTC4215 at address 0x44 | ||
29 | on I2C bus #0: | ||
30 | $ modprobe ltc4215 force=0,0x44 | ||
31 | |||
32 | |||
33 | Sysfs entries | ||
34 | ------------- | ||
35 | |||
36 | The LTC4215 has built-in limits for overvoltage, undervoltage, and | ||
37 | undercurrent warnings. This makes it very likely that the reference | ||
38 | circuit will be used. | ||
39 | |||
40 | in1_input input voltage | ||
41 | in2_input output voltage | ||
42 | |||
43 | in1_min_alarm input undervoltage alarm | ||
44 | in1_max_alarm input overvoltage alarm | ||
45 | |||
46 | curr1_input current | ||
47 | curr1_max_alarm overcurrent alarm | ||
48 | |||
49 | power1_input power usage | ||
50 | power1_alarm power bad alarm | ||