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Andrew F. Davis7cb6dcf2016-06-10 10:32:33 -05001Kernel driver ina3221
2=====================
3
4Supported chips:
5 * Texas Instruments INA3221
6 Prefix: 'ina3221'
7 Addresses: I2C 0x40 - 0x43
8 Datasheet: Publicly available at the Texas Instruments website
9 http://www.ti.com/
10
11Author: Andrew F. Davis <afd@ti.com>
12
13Description
14-----------
15
16The Texas Instruments INA3221 monitors voltage, current, and power on the high
17side of up to three D.C. power supplies. The INA3221 monitors both shunt drop
18and supply voltage, with programmable conversion times and averaging, current
19and power are calculated host-side from these.
20
21Sysfs entries
22-------------
23
24in[123]_input Bus voltage(mV) channels
25curr[123]_input Current(mA) measurement channels
26shunt[123]_resistor Shunt resistance(uOhm) channels
27curr[123]_crit Critical alert current(mA) setting, activates the
28 corresponding alarm when the respective current
29 is above this value
30curr[123]_crit_alarm Critical alert current limit exceeded
31curr[123]_max Warning alert current(mA) setting, activates the
32 corresponding alarm when the respective current
33 average is above this value.
34curr[123]_max_alarm Warning alert current limit exceeded
35in[456]_input Shunt voltage(uV) for channels 1, 2, and 3 respectively