1 Kernel driver ltc4260 2 ===================== 3 4 Supported chips: 5 6 * Linear Technology LTC4260 7 8 Prefix: 'ltc4260' 9 10 Addresses scanned: - 11 12 Datasheet: 13 14 http://cds.linear.com/docs/en/datasheet/4260fc.pdf 15 16 Author: Guenter Roeck <linux@roeck-us.net> 17 18 19 Description 20 ----------- 21 22 The LTC4260 Hot Swap controller allows a board to be safely inserted 23 and removed from a live backplane. 24 25 26 Usage Notes 27 ----------- 28 29 This driver does not probe for LTC4260 devices, since there is no register 30 which can be safely used to identify the chip. You will have to instantiate 31 the devices explicitly. 32 33 Example: the following will load the driver for an LTC4260 at address 0x10 34 on I2C bus #1:: 35 36 $ modprobe ltc4260 37 $ echo ltc4260 0x10 > /sys/bus/i2c/devices/i2c-1/new_device 38 39 40 Sysfs entries 41 ------------- 42 43 Voltage readings provided by this driver are reported as obtained from the ADC 44 registers. If a set of voltage divider resistors is installed, calculate the 45 real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the 46 value of the divider resistor against the measured voltage and R2 is the value 47 of the divider resistor against Ground. 48 49 Current reading provided by this driver is reported as obtained from the ADC 50 Current Sense register. The reported value assumes that a 1 mOhm sense resistor 51 is installed. If a different sense resistor is installed, calculate the real 52 current by dividing the reported value by the sense resistor value in mOhm. 53 54 ======================= ======================= 55 in1_input SOURCE voltage (mV) 56 in1_min_alarm Undervoltage alarm 57 in1_max_alarm Overvoltage alarm 58 59 in2_input ADIN voltage (mV) 60 in2_alarm Power bad alarm 61 62 curr1_input SENSE current (mA) 63 curr1_alarm SENSE overcurrent alarm 64 ======================= =======================
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