From 7cb6dcff1956ec9e338abfa2f298d2971cfbab79 Mon Sep 17 00:00:00 2001 From: "Andrew F. Davis" Date: Fri, 10 Jun 2016 10:32:33 -0500 Subject: hwmon: Add support for INA3221 Triple Current/Voltage Monitors Add support for the the INA3221 26v capable, Triple channel, Bi-Directional, Zero-Drift, Low-/High-Side, Current/Voltage Monitor with I2C interface. Signed-off-by: Andrew F. Davis Signed-off-by: Guenter Roeck --- Documentation/hwmon/ina3221 | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/hwmon/ina3221 (limited to 'Documentation/hwmon') diff --git a/Documentation/hwmon/ina3221 b/Documentation/hwmon/ina3221 new file mode 100644 index 000000000000..0ff74854cb2e --- /dev/null +++ b/Documentation/hwmon/ina3221 @@ -0,0 +1,35 @@ +Kernel driver ina3221 +===================== + +Supported chips: + * Texas Instruments INA3221 + Prefix: 'ina3221' + Addresses: I2C 0x40 - 0x43 + Datasheet: Publicly available at the Texas Instruments website + http://www.ti.com/ + +Author: Andrew F. Davis + +Description +----------- + +The Texas Instruments INA3221 monitors voltage, current, and power on the high +side of up to three D.C. power supplies. The INA3221 monitors both shunt drop +and supply voltage, with programmable conversion times and averaging, current +and power are calculated host-side from these. + +Sysfs entries +------------- + +in[123]_input Bus voltage(mV) channels +curr[123]_input Current(mA) measurement channels +shunt[123]_resistor Shunt resistance(uOhm) channels +curr[123]_crit Critical alert current(mA) setting, activates the + corresponding alarm when the respective current + is above this value +curr[123]_crit_alarm Critical alert current limit exceeded +curr[123]_max Warning alert current(mA) setting, activates the + corresponding alarm when the respective current + average is above this value. +curr[123]_max_alarm Warning alert current limit exceeded +in[456]_input Shunt voltage(uV) for channels 1, 2, and 3 respectively -- cgit v1.2.3