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Diffstat (limited to 'Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml b/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml index 6f0443322a36..47af97bb4ced 100644 --- a/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml +++ b/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml @@ -26,6 +26,7 @@ properties: - ti,ina226 - ti,ina230 - ti,ina231 + - ti,ina238 reg: maxItems: 1 @@ -35,6 +36,27 @@ properties: Shunt resistor value in micro-Ohm. $ref: /schemas/types.yaml#/definitions/uint32 + ti,shunt-gain: + description: | + Programmable gain divisor for the shunt voltage accuracy and range. This + property only applies to devices that have configurable PGA/ADCRANGE. The + gain value is used configure the gain and to convert the shunt voltage, + current and power register values when reading measurements from the + device. + + For devices that have a configurable PGA (e.g. INA209, INA219, INA220), + the gain value maps directly with the PG bits of the config register. + + For devices that have ADCRANGE configuration (e.g. INA238) a shunt-gain + value of 1 maps to ADCRANGE=1 where no gain divisor is applied to the + shunt voltage, and a value of 4 maps to ADCRANGE=0 such that a wider + voltage range is used. + + The default value is device dependent, and is defined by the reset value + of PGA/ADCRANGE in the respective configuration registers. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [1, 2, 4, 8] + required: - compatible - reg |