diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2024-08-28 15:23:53 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2024-08-30 08:34:23 -0700 |
| commit | 4d5c2d986757e4d6f56761af8ab689218a2bc432 (patch) | |
| tree | 9e9dcc666e6f020993c2c7731997da3c656abe0d /Documentation/hwmon | |
| parent | 9965ebd1836fb75c7a80f20ca65469f5df0d6063 (diff) | |
hwmon: (ina2xx) Add support for current limits
While the chips supported by this driver do not directly support current
limits, they do support setting shunt voltage limits. The shunt voltage
divided by the shunt resistor value is the current. On top of that,
calibration values are set such that in the shunt voltage register and
the current register report the same values. That means we can report and
configure current limits based on shunt voltage limits, and we can do so
with much better accuracy than by setting shunt voltage limits.
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/ina2xx.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst index 27d2e39bc8ac..7f1939b40f74 100644 --- a/Documentation/hwmon/ina2xx.rst +++ b/Documentation/hwmon/ina2xx.rst @@ -99,6 +99,10 @@ Sysfs entries for ina226, ina230 and ina231 only ------------------------------------------------ ======================= ==================================================== +curr1_lcrit Critical low current +curr1_crit Critical high current +curr1_lcrit_alarm Current critical low alarm +curr1_crit_alarm Current critical high alarm in0_lcrit Critical low shunt voltage in0_crit Critical high shunt voltage in0_lcrit_alarm Shunt voltage critical low alarm |