linux-kernel - Re: [PATCH v5 1/2] dt-bindings: iio: amplifiers: add adl8113

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Message-ID: <20251128-precision-outplayed-6148633ee669@spud>
Date: Fri, 28 Nov 2025 18:55:52 +0000
From: Conor Dooley <conor@...nel.org>
To: Antoniu Miclaus <antoniu.miclaus@...log.com>
Cc: Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/2] dt-bindings: iio: amplifiers: add adl8113

On Fri, Nov 28, 2025 at 04:44:10PM +0200, Antoniu Miclaus wrote:
> Add devicetree bindings for adl8113.
> 
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
> ---
> Changes in v5:
> - Replace separate va-gpios and vb-gpios properties with single ctrl-gpios array
> - Remove second example, keep only one with external bypass configuration
> - Add comments to external bypass gains in example
> 
>  .../bindings/iio/amplifiers/adi,adl8113.yaml  | 89 +++++++++++++++++++
>  1 file changed, 89 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
> new file mode 100644
> index 000000000000..43ba51f8a235
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
> @@ -0,0 +1,89 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/amplifiers/adi,adl8113.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices ADL8113 Low Noise Amplifier with integrated bypass switches
> +
> +maintainers:
> +  - Antoniu Miclaus <antoniu.miclaus@...log.com>
> +
> +description: |
> +  The ADL8113 is a 10MHz to 12GHz Low Noise Amplifier with integrated bypass
> +  switches controlled by two GPIO pins (VA and VB). The device supports four
> +  operation modes:
> +    - Internal Amplifier: VA=0, VB=0 - Signal passes through the internal LNA
> +    - Internal Bypass: VA=1, VB=1 - Signal bypasses through internal path
> +    - External Bypass A: VA=0, VB=1 - Signal routes from RFIN to OUT_A and from IN_A to RFOUT
> +    - External Bypass B: VA=1, VB=0 - Signal routes from RFIN to OUT_B and from IN_B to RFOUT
> +
> +    https://www.analog.com/en/products/adl8113.html
> +
> +properties:
> +  compatible:
> +    const: adi,adl8113
> +
> +  vdd1-supply: true
> +
> +  vdd2-supply: true
> +
> +  vss2-supply: true
> +
> +  ctrl-gpios:
> +    description:
> +      GPIOs connected to the VA and VB control pins (in that order).
> +      Must be specified as GPIO_ACTIVE_HIGH.
> +    minItems: 2
> +    maxItems: 2

"maxItems: 2" should suffice here, minItems defaults to maxItems if not
specified. Although, this seems like it should be an items list, since
that avoids defining ordering in free-form text as you are.

pw-bot: changes-requested

Cheers,
Conor.

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