1 .. SPDX-License-Identifier: GPL-2.0-only 2 3 Kernel driver ina238 4 ==================== 5 6 Supported chips: 7 8 * Texas Instruments INA238 9 10 Prefix: 'ina238' 11 12 Addresses: I2C 0x40 - 0x4f 13 14 Datasheet: 15 https://www.ti.com/lit/gpn/ina238 16 17 Author: Nathan Rossi <nathan.rossi@digi.com> 18 19 Description 20 ----------- 21 22 The INA238 is a current shunt, power and temperature monitor with an I2C 23 interface. It includes a number of programmable functions including alerts, 24 conversion rate, sample averaging and selectable shunt voltage accuracy. 25 26 The shunt value in micro-ohms can be set via platform data or device tree at 27 compile-time or via the shunt_resistor attribute in sysfs at run-time. Please 28 refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings 29 if the device tree is used. 30 31 Sysfs entries 32 ------------- 33 34 ======================= ======================================================= 35 in0_input Shunt voltage (mV) 36 in0_min Minimum shunt voltage threshold (mV) 37 in0_min_alarm Minimum shunt voltage alarm 38 in0_max Maximum shunt voltage threshold (mV) 39 in0_max_alarm Maximum shunt voltage alarm 40 41 in1_input Bus voltage (mV) 42 in1_min Minimum bus voltage threshold (mV) 43 in1_min_alarm Minimum shunt voltage alarm 44 in1_max Maximum bus voltage threshold (mV) 45 in1_max_alarm Maximum shunt voltage alarm 46 47 power1_input Power measurement (uW) 48 power1_max Maximum power threshold (uW) 49 power1_max_alarm Maximum power alarm 50 51 curr1_input Current measurement (mA) 52 53 temp1_input Die temperature measurement (mC) 54 temp1_max Maximum die temperature threshold (mC) 55 temp1_max_alarm Maximum die temperature alarm 56 ======================= =======================================================
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