diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/hwmon/adt7410 | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/Documentation/hwmon/adt7410')
-rw-r--r-- | kernel/Documentation/hwmon/adt7410 | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/kernel/Documentation/hwmon/adt7410 b/kernel/Documentation/hwmon/adt7410 new file mode 100644 index 000000000..9817941e5 --- /dev/null +++ b/kernel/Documentation/hwmon/adt7410 @@ -0,0 +1,73 @@ +Kernel driver adt7410 +===================== + +Supported chips: + * Analog Devices ADT7410 + Prefix: 'adt7410' + Addresses scanned: None + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf + * Analog Devices ADT7420 + Prefix: 'adt7420' + Addresses scanned: None + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/static/imported-files/data_sheets/ADT7420.pdf + * Analog Devices ADT7310 + Prefix: 'adt7310' + Addresses scanned: None + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/static/imported-files/data_sheets/ADT7310.pdf + * Analog Devices ADT7320 + Prefix: 'adt7320' + Addresses scanned: None + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/static/imported-files/data_sheets/ADT7320.pdf + +Author: Hartmut Knaack <knaack.h@gmx.de> + +Description +----------- + +The ADT7310/ADT7410 is a temperature sensor with rated temperature range of +-55°C to +150°C. It has a high accuracy of +/-0.5°C and can be operated at a +resolution of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an +INT pin to indicate that a minimum or maximum temperature set point has been +exceeded, as well as a critical temperature (CT) pin to indicate that the +critical temperature set point has been exceeded. Both pins can be set up with a +common hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. +Both pins can individually set to be active-low or active-high, while the whole +device can either run in comparator mode or interrupt mode. The ADT7410 supports +continuous temperature sampling, as well as sampling one temperature value per +second or even just get one sample on demand for power saving. Besides, it can +completely power down its ADC, if power management is required. + +The ADT7320/ADT7420 is register compatible, the only differences being the +package, a slightly narrower operating temperature range (-40°C to +150°C), and +a better accuracy (0.25°C instead of 0.50°C.) + +The difference between the ADT7310/ADT7320 and ADT7410/ADT7420 is the control +interface, the ADT7310 and ADT7320 use SPI while the ADT7410 and ADT7420 use +I2C. + +Configuration Notes +------------------- + +Since the device uses one hysteresis value, which is an offset to minimum, +maximum and critical temperature, it can only be set for temp#_max_hyst. +However, temp#_min_hyst and temp#_crit_hyst show their corresponding +hysteresis. +The device is set to 16 bit resolution and comparator mode. + +sysfs-Interface +--------------- + +temp#_input - temperature input +temp#_min - temperature minimum setpoint +temp#_max - temperature maximum setpoint +temp#_crit - critical temperature setpoint +temp#_min_hyst - hysteresis for temperature minimum (read-only) +temp#_max_hyst - hysteresis for temperature maximum (read/write) +temp#_crit_hyst - hysteresis for critical temperature (read-only) +temp#_min_alarm - temperature minimum alarm flag +temp#_max_alarm - temperature maximum alarm flag +temp#_crit_alarm - critical temperature alarm flag |