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1 | Kernel driver adt7411 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
b04f2f7d | 5 | |
d84ca5b3 | 6 | * Analog Devices ADT7411 |
b04f2f7d | 7 | |
d84ca5b3 | 8 | Prefix: 'adt7411' |
b04f2f7d | 9 | |
d84ca5b3 | 10 | Addresses scanned: 0x48, 0x4a, 0x4b |
b04f2f7d | 11 | |
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12 | Datasheet: Publicly available at the Analog Devices website |
13 | ||
14 | Author: Wolfram Sang (based on adt7470 by Darrick J. Wong) | |
15 | ||
16 | Description | |
17 | ----------- | |
18 | ||
19 | This driver implements support for the Analog Devices ADT7411 chip. There may | |
20 | be other chips that implement this interface. | |
21 | ||
22 | The ADT7411 can use an I2C/SMBus compatible 2-wire interface or an | |
23 | SPI-compatible 4-wire interface. It provides a 10-bit analog to digital | |
24 | converter which measures 1 temperature, vdd and 8 input voltages. It has an | |
25 | internal temperature sensor, but an external one can also be connected (one | |
26 | loses 2 inputs then). There are high- and low-limit registers for all inputs. | |
27 | ||
28 | Check the datasheet for details. | |
29 | ||
30 | sysfs-Interface | |
31 | --------------- | |
32 | ||
b04f2f7d MCC |
33 | ================ ================= |
34 | in0_input vdd voltage input | |
35 | in[1-8]_input analog 1-8 input | |
36 | temp1_input temperature input | |
37 | ================ ================= | |
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38 | |
39 | Besides standard interfaces, this driver adds (0 = off, 1 = on): | |
40 | ||
b04f2f7d MCC |
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 | ============== ======================================================= | |
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46 | |
47 | Notes | |
48 | ----- | |
49 | ||
50 | SPI, external temperature sensor and limit registers are not supported yet. |