Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver ltc2990 2 ===================== 3 4 Supported chips: 5 * Linear Technology LTC2990 6 Prefix: 'ltc2990' 7 Addresses scanned: - 8 Datasheet: http://www.linear.com/product/ltc2990 9 10 Author: Mike Looijmans <mike.looijmans@topic.nl> 11 12 13 Description 14 ----------- 15 16 LTC2990 is a Quad I2C Voltage, Current and Temperature Monitor. 17 The chip's inputs can measure 4 voltages, or two inputs together (1+2 and 3+4) 18 can be combined to measure a differential voltage, which is typically used to 19 measure current through a series resistor, or a temperature. 20 21 This driver currently uses the 2x differential mode only. In order to support 22 other modes, the driver will need to be expanded. 23 24 25 Usage Notes 26 ----------- 27 28 This driver does not probe for PMBus devices. You will have to instantiate 29 devices explicitly. 30 31 32 Sysfs attributes 33 ---------------- 34 35 The "curr*_input" measurements actually report the voltage drop across the 36 input pins in microvolts. This is equivalent to the current through a 1mOhm 37 sense resistor. Divide the reported value by the actual sense resistor value 38 in mOhm to get the actual value. 39 40 in0_input Voltage at Vcc pin in millivolt (range 2.5V to 5V) 41 temp1_input Internal chip temperature in millidegrees Celcius 42 curr1_input Current in mA across v1-v2 assuming a 1mOhm sense resistor. 43 curr2_input Current in mA across v3-v4 assuming a 1mOhm sense resistor.