Commit 485eefd7 authored by Sam Winchenbach's avatar Sam Winchenbach Committed by Jonathan Cameron
Browse files

dt-bindings: iio: filter: Add lpf/hpf freq margins 



Adds two properties to add a margin when automatically finding the
corner frequencies.

Signed-off-by: default avatarSam Winchenbach <swinchenbach@arka.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250328174831.227202-2-sam.winchenbach@framepointer.org


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent c6316e19

Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml

+20 −0
Original line number Diff line number Diff line
@@ -44,6 +44,24 @@ properties: 
  '#clock-cells':

    const: 0



  adi,lpf-margin-mhz:

    description:

      Sets the minimum distance between the fundamental frequency of `rf_in`

      and the corner frequency of the low-pass, output filter when operated in

      'auto' mode. The selected low-pass corner frequency will be greater than,

      or equal to, `rf_in` + `lpf-margin-hz`. If not setting is found that

      satisfies this relationship the filter will be put into 'bypass'.

    default: 0



  adi,hpf-margin-mhz:

    description:

      Sets the minimum distance between the fundamental frequency of `rf_in`

      and the corner frequency of the high-pass, input filter when operated in

      'auto' mode. The selected high-pass corner frequency will be less than,

      or equal to, `rf_in` - `hpf-margin-hz`. If not setting is found that

      satisfies this relationship the filter will be put into 'bypass'.

    default: 0



required:

  - compatible

  - reg
@@ -61,6 +79,8 @@ examples: 
        spi-max-frequency = <10000000>;

        clocks = <&admv8818_rfin>;

        clock-names = "rf_in";

        adi,lpf-margin-mhz = <300>;

        adi,hpf-margin-mhz = <300>;

      };

    };

...