diff options
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/htu21 | 46 | ||||
| -rw-r--r-- | Documentation/hwmon/ltc3815 | 61 |
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. |