65 lines · plain
1Kernel driver ltc42602=====================3 4Supported chips:5 6 * Linear Technology LTC42607 8 Prefix: 'ltc4260'9 10 Addresses scanned: -11 12 Datasheet:13 14 http://cds.linear.com/docs/en/datasheet/4260fc.pdf15 16Author: Guenter Roeck <linux@roeck-us.net>17 18 19Description20-----------21 22The LTC4260 Hot Swap controller allows a board to be safely inserted23and removed from a live backplane.24 25 26Usage Notes27-----------28 29This driver does not probe for LTC4260 devices, since there is no register30which can be safely used to identify the chip. You will have to instantiate31the devices explicitly.32 33Example: the following will load the driver for an LTC4260 at address 0x1034on I2C bus #1::35 36 $ modprobe ltc426037 $ echo ltc4260 0x10 > /sys/bus/i2c/devices/i2c-1/new_device38 39 40Sysfs entries41-------------42 43Voltage readings provided by this driver are reported as obtained from the ADC44registers. If a set of voltage divider resistors is installed, calculate the45real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the46value of the divider resistor against the measured voltage and R2 is the value47of the divider resistor against Ground.48 49Current reading provided by this driver is reported as obtained from the ADC50Current Sense register. The reported value assumes that a 1 mOhm sense resistor51is installed. If a different sense resistor is installed, calculate the real52current by dividing the reported value by the sense resistor value in mOhm.53 54======================= =======================55in1_input SOURCE voltage (mV)56in1_min_alarm Undervoltage alarm57in1_max_alarm Overvoltage alarm58 59in2_input ADIN voltage (mV)60in2_alarm Power bad alarm61 62curr1_input SENSE current (mA)63curr1_alarm SENSE overcurrent alarm64======================= =======================65