Documentation/hwmon/adt7411.rst
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)
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.
================ ================================= in0_input vdd voltage input in0_min vdd low limit in0_max vdd high limit in0_alarm vdd alarm in[1-8]_input analog 1-8 input in[1-8]_min analog input low limit in[1-8]_max analog input high limit in[1-8]_alarm analog input alarm temp1_input internal temperature input temp1_min internal temperature low limit temp1_max internal temperature high limit temp1_min_alarm internal temperature low alarm temp1_max_alarm internal temperature high alarm ================ =================================
If the external temperature sensor is enabled, the following attributes are also available:
================ ================================================ temp2_input external temperature input temp2_min external temperature low limit temp2_max external temperature high limit temp2_min_alarm external temperature low alarm temp2_max_alarm external temperature high alarm temp2_fault external temperature sensor fault ================ ================================================
If the external temperature sensor is enabled, analog inputs in1 and in2 are not available.
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 ============== =======================================================
SPI is not supported yet.