Commit | Line | Data |
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d84ca5b3 WS |
1 | Kernel driver adt7411 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
5 | * Analog Devices ADT7411 | |
6 | Prefix: 'adt7411' | |
7 | Addresses scanned: 0x48, 0x4a, 0x4b | |
8 | Datasheet: Publicly available at the Analog Devices website | |
9 | ||
10 | Author: Wolfram Sang (based on adt7470 by Darrick J. Wong) | |
11 | ||
12 | Description | |
13 | ----------- | |
14 | ||
15 | This driver implements support for the Analog Devices ADT7411 chip. There may | |
16 | be other chips that implement this interface. | |
17 | ||
18 | The ADT7411 can use an I2C/SMBus compatible 2-wire interface or an | |
19 | SPI-compatible 4-wire interface. It provides a 10-bit analog to digital | |
20 | converter which measures 1 temperature, vdd and 8 input voltages. It has an | |
21 | internal temperature sensor, but an external one can also be connected (one | |
22 | loses 2 inputs then). There are high- and low-limit registers for all inputs. | |
23 | ||
24 | Check the datasheet for details. | |
25 | ||
26 | sysfs-Interface | |
27 | --------------- | |
28 | ||
29 | in0_input - vdd voltage input | |
30 | in[1-8]_input - analog 1-8 input | |
31 | temp1_input - temperature input | |
32 | ||
33 | Besides standard interfaces, this driver adds (0 = off, 1 = on): | |
34 | ||
35 | adc_ref_vdd - Use vdd as reference instead of 2.25 V | |
36 | fast_sampling - Sample at 22.5 kHz instead of 1.4 kHz, but drop filters | |
37 | no_average - Turn off averaging over 16 samples | |
38 | ||
39 | Notes | |
40 | ----- | |
41 | ||
42 | SPI, external temperature sensor and limit registers are not supported yet. |