Documentation/hwmon/adt7411.rst

   1 Kernel driver adt7411
   2 =====================
   3
   4 Supported 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
  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
  33 ================ =================
  34 in0_input        vdd voltage input
  35 in[1-8]_input    analog 1-8 input
  36 temp1_input      temperature input
  37 ================ =================
  38
  39 Besides 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
  47 Notes
  48 -----
  49
  50 SPI, external temperature sensor and limit registers are not supported yet.