aboutsummaryrefslogtreecommitdiff
path: root/Documentation/hwmon/adm1275
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/hwmon/adm1275')
-rw-r--r--Documentation/hwmon/adm127592
1 files changed, 92 insertions, 0 deletions
diff --git a/Documentation/hwmon/adm1275 b/Documentation/hwmon/adm1275
new file mode 100644
index 00000000..15b4a20d
--- /dev/null
+++ b/Documentation/hwmon/adm1275
@@ -0,0 +1,92 @@
+Kernel driver adm1275
+=====================
+
+Supported chips:
+ * Analog Devices ADM1075
+ Prefix: 'adm1075'
+ Addresses scanned: -
+ Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf
+ * Analog Devices ADM1275
+ Prefix: 'adm1275'
+ Addresses scanned: -
+ Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf
+ * Analog Devices ADM1276
+ Prefix: 'adm1276'
+ Addresses scanned: -
+ Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+This driver supports hardware montoring for Analog Devices ADM1075, ADM1275,
+and ADM1276 Hot-Swap Controller and Digital Power Monitor.
+
+ADM1075, ADM1275, and ADM1276 are hot-swap controllers that allow a circuit
+board to be removed from or inserted into a live backplane. They also feature
+current and voltage readback via an integrated 12-bit analog-to-digital
+converter (ADC), accessed using a PMBus interface.
+
+The driver is a client driver to the core PMBus driver. Please see
+Documentation/hwmon/pmbus for details on PMBus client drivers.
+
+
+Usage Notes
+-----------
+
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices for
+details.
+
+The ADM1075, unlike many other PMBus devices, does not support internal voltage
+or current scaling. Reported voltages, currents, and power are raw measurements,
+and will typically have to be scaled.
+
+
+Platform data support
+---------------------
+
+The driver supports standard PMBus driver platform data. Please see
+Documentation/hwmon/pmbus for details.
+
+
+Sysfs entries
+-------------
+
+The following attributes are supported. Limits are read-write, history reset
+attributes are write-only, all other attributes are read-only.
+
+in1_label "vin1" or "vout1" depending on chip variant and
+ configuration. On ADM1075, vout1 reports the voltage on
+ the VAUX pin.
+in1_input Measured voltage.
+in1_min Minimum Voltage.
+in1_max Maximum voltage.
+in1_min_alarm Voltage low alarm.
+in1_max_alarm Voltage high alarm.
+in1_highest Historical maximum voltage.
+in1_reset_history Write any value to reset history.
+
+curr1_label "iout1"
+curr1_input Measured current.
+curr1_max Maximum current.
+curr1_max_alarm Current high alarm.
+curr1_lcrit Critical minimum current. Depending on the chip
+ configuration, either curr1_lcrit or curr1_crit is
+ supported, but not both.
+curr1_lcrit_alarm Critical current low alarm.
+curr1_crit Critical maximum current. Depending on the chip
+ configuration, either curr1_lcrit or curr1_crit is
+ supported, but not both.
+curr1_crit_alarm Critical current high alarm.
+curr1_highest Historical maximum current.
+curr1_reset_history Write any value to reset history.
+
+power1_label "pin1"
+power1_input Input power.
+power1_reset_history Write any value to reset history.
+
+ Power attributes are supported on ADM1075 and ADM1276
+ only.