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- Kernel driver ltc4260
- =====================
- Supported chips:
- * Linear Technology LTC4260
- Prefix: 'ltc4260'
- Addresses scanned: -
- Datasheet:
- http://cds.linear.com/docs/en/datasheet/4260fc.pdf
- Author: Guenter Roeck <linux@roeck-us.net>
- Description
- -----------
- The LTC4260 Hot Swap controller allows a board to be safely inserted
- and removed from a live backplane.
- Usage Notes
- -----------
- This driver does not probe for LTC4260 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 LTC4260 at address 0x10
- on I2C bus #1:
- $ modprobe ltc4260
- $ echo ltc4260 0x10 > /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 SOURCE voltage (mV)
- in1_min_alarm Undervoltage alarm
- in1_max_alarm Overvoltage alarm
- in2_input ADIN voltage (mV)
- in2_alarm Power bad alarm
- curr1_input SENSE current (mA)
- curr1_alarm SENSE overcurrent alarm
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