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| -rw-r--r-- | Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml b/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml index 0fd8ae5f6a22..5f10f1207d69 100644 --- a/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml +++ b/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml @@ -58,6 +58,25 @@ patternProperties: shunt-resistor-micro-ohms: description: shunt resistor value in micro-Ohm + ti,summation-disable: + description: | + The INA3221 has a critical alert pin that can be controlled by the + summation control function. This function adds the single + shunt-voltage conversions for the desired channels in order to + compare the combined sum to the programmed limit. The Shunt-Voltage + Sum Limit register contains the programmed value that is compared + to the value in the Shunt-Voltage Sum register in order to + determine if the total summed limit is exceeded. If the + shunt-voltage sum limit value is exceeded, the critical alert pin + is asserted. + + For the summation limit to have a meaningful value, it is necessary + to use the same shunt-resistor value on all enabled channels. If + this is not the case or if a channel should not be used for + triggering the critical alert pin, then this property can be used + exclude specific channels from the summation control function. + type: boolean + required: - reg |