Re: [PATCH v3 1/3] dt-bindings: iio: adc: avia-hx711: add avia,hx710b compatible

David Lechner
2026-04-26T16:28:24Z

On 4/22/26 12:59 PM, Piyush Patle wrote:
> The HX710B shares the same two-wire interface as the HX711 but differs
> in its channel and gain model: gain is fixed at 128 and the number of
> trailing PD_SCK pulses selects the input channel rather than the gain.
>
> Add avia,hx710b to the compatible enum. Document the chip differences
> in the description and add chip-specific supply properties (dvdd-supply,
> vsup-supply) for the HX711, a rate-gpios property for the HX711 RATE
> pin, and an allOf constraint that forbids HX711-only properties on
> HX710B nodes. Clarify the clock-frequency description to reflect its
> actual purpose: controlling the SCK bit-bang timing.
>
> Signed-off-by: Piyush Patle <piyushpatle228@gmail.com>
> ---
> Changes in v3:
> - Drop the vref-supply mention from avdd-supply; no such binding
> property exists.

Why is there no vref-supply?

HX710B has a VREF pin for a reference voltage input.