Signed-off-by: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx> --- Documentation/hwmon/ltc4261 | 56 +++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 56 insertions(+), 0 deletions(-) create mode 100644 Documentation/hwmon/ltc4261 diff --git a/Documentation/hwmon/ltc4261 b/Documentation/hwmon/ltc4261 new file mode 100644 index 0000000..697c8c6 --- /dev/null +++ b/Documentation/hwmon/ltc4261 @@ -0,0 +1,56 @@ +Kernel driver ltc4261 +===================== + +Supported chips: + * Linear Technology LTC4261 + Prefix: 'ltc4261' + Addresses scanned: - + Datasheet: + http://cds.linear.com/docs/Datasheet/42612fb.pdf + +Author: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx> + + +Description +----------- + +The LTC4261/LTC4261-2 negative voltage Hot Swap controllers allow a board +to be safely inserted and removed from a live backplane. + + +Usage Notes +----------- + +This driver does not probe for LTC4261 devices, since there is no register +which can be safely used to identify the chip. You will have to instantiate +the devices explicitly. + +Example: the following will load the driver for an LTC4261 at address 0x23 +on I2C bus #1: +$ modprobe ltc4261 +$ echo ltc4261 0x23 > /sys/bus/i2c/devices/i2c-1/new_device + + +Sysfs entries +------------- + +Voltage readings provided by this driver are reported as obtained from the ADC +registers. If a set of voltage divider resistors is installed, calculate the +real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the +value of the divider resistor against the measured voltage and R2 is the value +of the divider resistor against Ground. + +Current reading provided by this driver is reported as obtained from the ADC +Current Sense register. The reported value assumes that a 1 mOhm sense resistor +is installed. If a different sense resistor is installed, calculate the real +current by dividing the reported value by the sense resistor value in mOhm. + +in1_input ADIN input voltage (mV) +in2_input ADIN2 input voltage (mV) + +in1_min_alarm ADIN/ADIN2 input undervoltage alarm +in1_max_alarm ADIN/ADIN2 input overvoltage alarm + +curr1_input SENSE current (mA) + +curr1_alarm SENSE overcurrent alarm -- 1.7.0.87.g0901d _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
