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authorAndrew F. Davis <afd@ti.com>2016-06-10 10:32:33 -0500
committerGuenter Roeck <linux@roeck-us.net>2016-06-27 18:58:03 -0700
commit7cb6dcff1956ec9e338abfa2f298d2971cfbab79 (patch)
tree41cb822babec9e05fc791a6fb757b7fe227d7931 /Documentation
parentc0a68601804dcb4ee8a141e42e1e6893b6b0610c (diff)
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>
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+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