On Fri, May 15, 2020 at 07:26:18PM -0700, Jonathan Bakker wrote: > Some devices may require a current adc, but only have a voltage > ADC onboard. In order to read the current, they have a resistor > connected to the ADC. Add bindings for this possibility. > > Signed-off-by: Jonathan Bakker <xc-racer2@xxxxxxx> > --- > .../iio/adc/linux,current-from-voltage.yaml | 47 +++++++++++++++++++ > 1 file changed, 47 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/adc/linux,current-from-voltage.yaml > > diff --git a/Documentation/devicetree/bindings/iio/adc/linux,current-from-voltage.yaml b/Documentation/devicetree/bindings/iio/adc/linux,current-from-voltage.yaml > new file mode 100644 > index 000000000000..385d317607c3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/adc/linux,current-from-voltage.yaml > @@ -0,0 +1,47 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/adc/linux,current-from-voltage.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Current ADC from voltage ADC and resistor > + > +maintainers: > + - Jonathan Bakker <xc-racer2@xxxxxxx> > + > +properties: > + compatible: > + const: linux,current-from-voltage How is an ADC with a resistor attached a Linux thing? So you don't need 'linux', but then 'current-from-voltage' isn't the best naming. I don't have a suggestion ATM. > + > + io-channel-names: > + const: adc > + > + io-channels: > + maxItems: 1 > + description: Voltage ADC channel > + > + linux,resistor-ohms: > + description: Strength of resistor connected to voltage ADC Wouldn't you need this to be micro-ohms? Otherwise, there'd be too much voltage drop? Rob
