0001 Kernel driver adt7411
0002 =====================
0003
0004 Supported chips:
0005
0006 * Analog Devices ADT7411
0007
0008 Prefix: 'adt7411'
0009
0010 Addresses scanned: 0x48, 0x4a, 0x4b
0011
0012 Datasheet: Publicly available at the Analog Devices website
0013
0014 Author: Wolfram Sang (based on adt7470 by Darrick J. Wong)
0015
0016 Description
0017 -----------
0018
0019 This driver implements support for the Analog Devices ADT7411 chip. There may
0020 be other chips that implement this interface.
0021
0022 The ADT7411 can use an I2C/SMBus compatible 2-wire interface or an
0023 SPI-compatible 4-wire interface. It provides a 10-bit analog to digital
0024 converter which measures 1 temperature, vdd and 8 input voltages. It has an
0025 internal temperature sensor, but an external one can also be connected (one
0026 loses 2 inputs then). There are high- and low-limit registers for all inputs.
0027
0028 Check the datasheet for details.
0029
0030 sysfs-Interface
0031 ---------------
0032
0033 ================ =================
0034 in0_input vdd voltage input
0035 in[1-8]_input analog 1-8 input
0036 temp1_input temperature input
0037 ================ =================
0038
0039 Besides standard interfaces, this driver adds (0 = off, 1 = on):
0040
0041 ============== =======================================================
0042 adc_ref_vdd Use vdd as reference instead of 2.25 V
0043 fast_sampling Sample at 22.5 kHz instead of 1.4 kHz, but drop filters
0044 no_average Turn off averaging over 16 samples
0045 ============== =======================================================
0046
0047 Notes
0048 -----
0049
0050 SPI, external temperature sensor and limit registers are not supported yet.
