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author | David S. Miller <davem@davemloft.net> | 2010-03-15 23:23:54 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2010-03-15 23:23:54 (GMT) |
commit | 4961e02f1999e1c3468c09b2669c94d7c3ae82a8 (patch) | |
tree | 44c15abb09d7ba5e17a9aba95ee246648b1c1a8a /Documentation/hwmon/adt7411 | |
parent | d14a0ebda7d3daede1a99c01527affb9ceaa4c22 (diff) | |
parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) | |
download | linux-fsl-qoriq-4961e02f1999e1c3468c09b2669c94d7c3ae82a8.tar.xz |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'Documentation/hwmon/adt7411')
-rw-r--r-- | Documentation/hwmon/adt7411 | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/hwmon/adt7411 b/Documentation/hwmon/adt7411 new file mode 100644 index 0000000..1632960 --- /dev/null +++ b/Documentation/hwmon/adt7411 @@ -0,0 +1,42 @@ +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. |