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| author | Andrew F. Davis <afd@ti.com> | 2016-06-10 10:32:33 -0500 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-06-27 18:58:03 -0700 |
| commit | 7cb6dcff1956ec9e338abfa2f298d2971cfbab79 (patch) | |
| tree | 41cb822babec9e05fc791a6fb757b7fe227d7931 /Documentation/hwmon | |
| parent | c0a68601804dcb4ee8a141e42e1e6893b6b0610c (diff) | |
| download | lwn-7cb6dcff1956ec9e338abfa2f298d2971cfbab79.tar.gz lwn-7cb6dcff1956ec9e338abfa2f298d2971cfbab79.zip | |
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 <afd@ti.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/ina3221 | 35 |
1 files changed, 35 insertions, 0 deletions
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 <afd@ti.com> + +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 |