Kernel driver adt7411

Supported chips:

• Analog Devices ADT7411

  Prefix: ‘adt7411’

  Addresses scanned: 0x48, 0x4a, 0x4b

  Datasheet: Publicly available at the Analog Devices website

Author: Wolfram Sang (based on adt7470 by Darrick J. Wong)

Description

This driver implements support for the Analog Devices ADT7411 chip. There may be other chips that implement this interface.

The ADT7411 can use an I2C/SMBus compatible 2-wire interface or an SPI-compatible 4-wire interface. It provides a 10-bit analog to digital converter which measures 1 temperature, vdd and 8 input voltages. It has an internal temperature sensor, but an external one can also be connected (one loses 2 inputs then). There are high- and low-limit registers for all inputs.

Check the datasheet for details.

sysfs-Interface

in0_input	vdd voltage input
in[1-8]_input	analog 1-8 input
temp1_input	temperature input

Besides standard interfaces, this driver adds (0 = off, 1 = on):

adc_ref_vdd	Use vdd as reference instead of 2.25 V
fast_sampling	Sample at 22.5 kHz instead of 1.4 kHz, but drop filters
no_average	Turn off averaging over 16 samples

Notes

SPI, external temperature sensor and limit registers are not supported yet.