Re: [PATCH v9 02/11] dt-bindings: iio: adc: hx711: add VSUP supply property

[Piyush Patle]

On Wed, May 20, 2026 at 3:39 PM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
>
> On Tue, 19 May 2026 03:32:18 +0530
> Piyush Patle <piyushpatle228@xxxxxxxxx> wrote:
>
> > Document the optional VSUP supply used by the HX711 on-chip regulator.
> >
> > Signed-off-by: Piyush Patle <piyushpatle228@xxxxxxxxx>
> > Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
> > Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> See my reply to v8 around dvdd needing (I think) to be in this patch
> for the hx711 not later in the series.
>
> > ---
> > No change from v8. Already applied to iio.git testing branch.
> >  Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml b/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
> > index 1ea60dff98d5..a8eaa1f18de5 100644
> > --- a/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
> > +++ b/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
> > @@ -33,6 +33,10 @@ properties:
> >      description:
> >        Analog supply voltage (AVDD).
> >
> > +  vsup-supply:
> > +    description:
> > +      Supply voltage for the on-chip regulator (VSUP).
> > +
> >    clock-frequency:
> >      description:
> >        Controls the SCK bit-bang timing. The value is used to derive the
>
Acknowledged, and sorry for not acting on this in v9. In v10,
I will add dvdd-supply in patch 02/11 alongside vsup-supply with a
description that makes clear it is the digital input supply of the
HX711 (and not just a bypass capacitor point).

The description will read something like:

   dvdd-supply:
     description:
       Digital supply voltage (DVDD). On the HX711 DVDD is a board-
       supplied digital rail, distinct from VSUP; they may be tied to
       the same supply or driven separately.