summaryrefslogtreecommitdiff
path: root/Documentation/hwmon
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/htu2146
-rw-r--r--Documentation/hwmon/ltc381561
2 files changed, 61 insertions, 46 deletions
diff --git a/Documentation/hwmon/htu21 b/Documentation/hwmon/htu21
deleted file mode 100644
index f39a215fb..000000000
--- a/Documentation/hwmon/htu21
+++ /dev/null
@@ -1,46 +0,0 @@
-Kernel driver htu21
-===================
-
-Supported chips:
- * Measurement Specialties HTU21D
- Prefix: 'htu21'
- Addresses scanned: none
- Datasheet: Publicly available at the Measurement Specialties website
- http://www.meas-spec.com/downloads/HTU21D.pdf
-
-
-Author:
- William Markezana <william.markezana@meas-spec.com>
-
-Description
------------
-
-The HTU21D is a humidity and temperature sensor in a DFN package of
-only 3 x 3 mm footprint and 0.9 mm height.
-
-The devices communicate with the I2C protocol. All sensors are set to the
-same I2C address 0x40, so an entry with I2C_BOARD_INFO("htu21", 0x40) can
-be used in the board setup code.
-
-This driver does not auto-detect devices. You will have to instantiate the
-devices explicitly. Please see Documentation/i2c/instantiating-devices
-for details.
-
-sysfs-Interface
----------------
-
-temp1_input - temperature input
-humidity1_input - humidity input
-
-Notes
------
-
-The driver uses the default resolution settings of 12 bit for humidity and 14
-bit for temperature, which results in typical measurement times of 11 ms for
-humidity and 44 ms for temperature. To keep self heating below 0.1 degree
-Celsius, the device should not be active for more than 10% of the time. For
-this reason, the driver performs no more than two measurements per second and
-reports cached information if polled more frequently.
-
-Different resolutions, the on-chip heater, using the CRC checksum and reading
-the serial number are not supported yet.
diff --git a/Documentation/hwmon/ltc3815 b/Documentation/hwmon/ltc3815
new file mode 100644
index 000000000..eb7db2d13
--- /dev/null
+++ b/Documentation/hwmon/ltc3815
@@ -0,0 +1,61 @@
+Kernel driver ltc3815
+=====================
+
+Supported chips:
+ * Linear Technology LTC3815
+ Prefix: 'ltc3815'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc3815
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+LTC3815 is a Monolithic Synchronous DC/DC Step-Down Converter.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for PMBus devices. You will have to instantiate
+devices explicitly.
+
+Example: the following commands will load the driver for an LTC3815
+at address 0x20 on I2C bus #1:
+
+# modprobe ltc3815
+# echo ltc3815 0x20 > /sys/bus/i2c/devices/i2c-1/new_device
+
+
+Sysfs attributes
+----------------
+
+in1_label "vin"
+in1_input Measured input voltage.
+in1_alarm Input voltage alarm.
+in1_highest Highest input voltage.
+in1_reset_history Reset input voltage history.
+
+in2_label "vout1".
+in2_input Measured output voltage.
+in2_alarm Output voltage alarm.
+in2_highest Highest output voltage.
+in2_reset_history Reset output voltage history.
+
+temp1_input Measured chip temperature.
+temp1_alarm Temperature alarm.
+temp1_highest Highest measured temperature.
+temp1_reset_history Reset temperature history.
+
+curr1_label "iin".
+curr1_input Measured input current.
+curr1_highest Highest input current.
+curr1_reset_history Reset input current history.
+
+curr2_label "iout1".
+curr2_input Measured output current.
+curr2_alarm Output current alarm.
+curr2_highest Highest output current.
+curr2_reset_history Reset output current history.