1 Kernel driver ltc2990
2 =====================
3
4
5 Supported chips:
6
7 * Linear Technology LTC2990
8
9 Prefix: 'ltc2990'
10
11 Addresses scanned: -
12
13 Datasheet: http://www.linear.com/product/l
14
15
16
17 Author:
18
19 - Mike Looijmans <mike.looijmans@topic.
20 - Tom Levens <tom.levens@cern.ch>
21
22
23 Description
24 -----------
25
26 LTC2990 is a Quad I2C Voltage, Current and Tem
27 The chip's inputs can measure 4 voltages, or t
28 can be combined to measure a differential volt
29 measure current through a series resistor, or
30 diode.
31
32
33 Usage Notes
34 -----------
35
36 This driver does not probe for PMBus devices.
37 devices explicitly.
38
39
40 Sysfs attributes
41 ----------------
42
43 ============= ================================
44 in0_input Voltage at Vcc pin in millivolt
45 temp1_input Internal chip temperature in mil
46 ============= ================================
47
48 A subset of the following attributes are visib
49 mode of the chip.
50
51 ============= ================================
52 in[1-4]_input Voltage at V[1-4] pin in millivo
53 temp2_input External temperature sensor TR1
54 temp3_input External temperature sensor TR2
55 curr1_input Current in mA across V1-V2 assum
56 curr2_input Current in mA across V3-V4 assum
57 ============= ================================
58
59 The "curr*_input" measurements actually report
60 input pins in microvolts. This is equivalent t
61 sense resistor. Divide the reported value by t
62 in mOhm to get the actual value.
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