Re: [PATCH v2 4/5] dt-bindings: iio: adc: adi,ad7606: add gain calibration support

David Lechner
2025-05-02T18:54:40Z

On 5/2/25 8:27 AM, Angelo Dureghello wrote:
> From: Angelo Dureghello <adureghello@baylibre.com>
>
> Add gain calibration support by a per-channel resistor value.
>
> Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
> ---
> .../devicetree/bindings/iio/adc/adi,ad7606.yaml | 29 ++++++++++++++++++++++
> 1 file changed, 29 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> index 29f12d650442b8ff2eb455306ce59a0e87867ddd..d4b8ea51f60be367e79a4db18d932cbca9c7dc91 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> @@ -204,6 +204,15 @@ patternProperties:
> considered a bipolar differential channel. Otherwise it is bipolar
> single-ended.
>
> + adi,rfilter-ohms:
> + description:
> + For ADCs that supports gain calibration, this property must be set to
> + the value of the external RFilter resistor. Proper gain error
> + correction is applied based on this value.
> + default: 0
> + minimum: 0
> + maximum: 65536
> +
Max should be 64512.