| Generic Voltage Divided ADC Battery |
| ========================= |
| |
| In applications where a more sophisticated fuel gauge isn't available, |
| a simple voltage divider circuit and an external ADC can be used to get |
| the battery voltage. |
| |
| R1 R2 |
| +------/\/\/\------+------/\/\/\------+ |
| | | | |
| Vbat Vadc GND |
| |
| Required Properties: |
| ------------------- |
| - compatible: "adc-div-battery" |
| - io-channels: The phandle + io-specifier pair of the ADC [1] |
| - divider-r1-ohm: The resistance of R1 in the divider circuit |
| - divider-r2-ohm: The resistance of R2 in the divider circuit |
| |
| |
| [1] See Documentation/devicetree/bindings/iio/iio-bindings.txt |
| |
| Example: |
| |
| battery { |
| compatible = "adc-div-battery"; |
| io-channels = <&adc1 3>; |
| divider-r1-ohm = <100000>; |
| divider-r2-ohm = <301000>; |
| }; |
