1.. SPDX-License-Identifier: GPL-2.0-only 2 3Kernel driver ina238 4==================== 5 6Supported 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 * Silergy SQ52206 18 19 Prefix: 'SQ52206' 20 21 Addresses: I2C 0x40 - 0x4f 22 23Author: Nathan Rossi <nathan.rossi@digi.com> 24 25Description 26----------- 27 28The INA238 is a current shunt, power and temperature monitor with an I2C 29interface. It includes a number of programmable functions including alerts, 30conversion rate, sample averaging and selectable shunt voltage accuracy. 31 32The shunt value in micro-ohms can be set via platform data or device tree at 33compile-time or via the shunt_resistor attribute in sysfs at run-time. Please 34refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings 35if the device tree is used. 36 37Sysfs entries 38------------- 39 40======================= ======================================================= 41in0_input Shunt voltage (mV) 42in0_min Minimum shunt voltage threshold (mV) 43in0_min_alarm Minimum shunt voltage alarm 44in0_max Maximum shunt voltage threshold (mV) 45in0_max_alarm Maximum shunt voltage alarm 46 47in1_input Bus voltage (mV) 48in1_min Minimum bus voltage threshold (mV) 49in1_min_alarm Minimum shunt voltage alarm 50in1_max Maximum bus voltage threshold (mV) 51in1_max_alarm Maximum shunt voltage alarm 52 53power1_input Power measurement (uW) 54power1_max Maximum power threshold (uW) 55power1_max_alarm Maximum power alarm 56 57curr1_input Current measurement (mA) 58 59temp1_input Die temperature measurement (mC) 60temp1_max Maximum die temperature threshold (mC) 61temp1_max_alarm Maximum die temperature alarm 62======================= ======================================================= 63 64Additional sysfs entries for sq52206 65------------------------------------ 66 67======================= ======================================================= 68energy1_input Energy measurement (uJ) 69 70power1_input_highest Peak Power (uW) 71======================= ======================================================= 72