diff options
Diffstat (limited to 'Documentation/hwmon/ina238.rst')
| -rw-r--r-- | Documentation/hwmon/ina238.rst | 61 |
1 files changed, 57 insertions, 4 deletions
diff --git a/Documentation/hwmon/ina238.rst b/Documentation/hwmon/ina238.rst index d9f479984420..43950d1ec551 100644 --- a/Documentation/hwmon/ina238.rst +++ b/Documentation/hwmon/ina238.rst @@ -5,6 +5,24 @@ Kernel driver ina238 Supported chips: + * Texas Instruments INA228 + + Prefix: 'ina228' + + Addresses: I2C 0x40 - 0x4f + + Datasheet: + https://www.ti.com/lit/gpn/ina228 + + * Texas Instruments INA237 + + Prefix: 'ina237' + + Addresses: I2C 0x40 - 0x4f + + Datasheet: + https://www.ti.com/lit/gpn/ina237 + * Texas Instruments INA238 Prefix: 'ina238' @@ -14,6 +32,22 @@ Supported chips: Datasheet: https://www.ti.com/lit/gpn/ina238 + * Texas Instruments INA700 + + Datasheet: + https://www.ti.com/product/ina700 + + * Texas Instruments INA780 + + Datasheet: + https://www.ti.com/product/ina780a + + * Silergy SQ52206 + + Prefix: 'SQ52206' + + Addresses: I2C 0x40 - 0x4f + Author: Nathan Rossi <nathan.rossi@digi.com> Description @@ -23,10 +57,20 @@ The INA238 is a current shunt, power and temperature monitor with an I2C interface. It includes a number of programmable functions including alerts, conversion rate, sample averaging and selectable shunt voltage accuracy. -The shunt value in micro-ohms can be set via platform data or device tree at -compile-time or via the shunt_resistor attribute in sysfs at run-time. Please -refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings -if the device tree is used. +The shunt value in micro-ohms can be set via device properties, either from +platform code or from device tree data. Please refer to +Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings if +device tree is used. + +INA237 is a functionally equivalent variant of INA238 with slightly +different accuracy. INA228 is another variant of INA238 with higher ADC +resolution. This chip also reports the energy. + +INA700 and INA780 are variants of the chip series with built-in shunt resistor. +They also report the energy. + +SQ52206 is a mostly compatible chip from Sylergy. It reports the energy +as well as the peak power consumption. Sysfs entries ------------- @@ -47,8 +91,17 @@ in1_max_alarm Maximum shunt voltage alarm power1_input Power measurement (uW) power1_max Maximum power threshold (uW) power1_max_alarm Maximum power alarm +power1_input_highest Peak Power (uW) + (SQ52206 only) curr1_input Current measurement (mA) +curr1_min Minimum current threshold (mA) +curr1_min_alarm Minimum current alarm +curr1_max Maximum current threshold (mA) +curr1_max_alarm Maximum current alarm + +energy1_input Energy measurement (uJ) + (SQ52206, INA237, and INA780 only) temp1_input Die temperature measurement (mC) temp1_max Maximum die temperature threshold (mC) |