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1Kernel driver adt7411
2=====================
3
4Supported chips:
5
6 * Analog Devices ADT7411
7
8 Prefix: 'adt7411'
9
10 Addresses scanned: 0x48, 0x4a, 0x4b
11
12 Datasheet: Publicly available at the Analog Devices website
13
14Author: Wolfram Sang (based on adt7470 by Darrick J. Wong)
15
16Description
17-----------
18
19This driver implements support for the Analog Devices ADT7411 chip. There may
20be other chips that implement this interface.
21
22The ADT7411 can use an I2C/SMBus compatible 2-wire interface or an
23SPI-compatible 4-wire interface. It provides a 10-bit analog to digital
24converter which measures 1 temperature, vdd and 8 input voltages. It has an
25internal temperature sensor, but an external one can also be connected (one
26loses 2 inputs then). There are high- and low-limit registers for all inputs.
27
28Check the datasheet for details.
29
30sysfs-Interface
31---------------
32
33================ =================
34in0_input vdd voltage input
35in[1-8]_input analog 1-8 input
36temp1_input temperature input
37================ =================
38
39Besides standard interfaces, this driver adds (0 = off, 1 = on):
40
41 ============== =======================================================
42 adc_ref_vdd Use vdd as reference instead of 2.25 V
43 fast_sampling Sample at 22.5 kHz instead of 1.4 kHz, but drop filters
44 no_average Turn off averaging over 16 samples
45 ============== =======================================================
46
47Notes
48-----
49
50SPI, external temperature sensor and limit registers are not supported yet.