linux-kernel - Re: [PATCH 1/7] dt-bindings: iio: adc: Add adi,ad4062

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Message-ID: <20251013-step-quaintly-c58d8a1a460b@spud>
Date: Mon, 13 Oct 2025 20:50:31 +0100
From: Conor Dooley <conor@...nel.org>
To: Jorge Marques <jorge.marques@...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>,
	Jonathan Corbet <corbet@....net>, linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/7] dt-bindings: iio: adc: Add adi,ad4062

On Mon, Oct 13, 2025 at 09:27:59AM +0200, Jorge Marques wrote:
> Add dt-bindings for AD4062 family, devices AD4060/AD4062, low-power with
> monitor capabilities SAR ADCs. Each variant of the family differs in
> granuality. The device contains two outputs (gp0, gp1). The outputs can
> be configured for range of options, such as threshold and data ready.
> The device uses a 2-wire I3C interface.
> 
> Signed-off-by: Jorge Marques <jorge.marques@...log.com>
> ---
>  .../devicetree/bindings/iio/adc/adi,ad4062.yaml    | 83 ++++++++++++++++++++++
>  MAINTAINERS                                        |  6 ++
>  2 files changed, 89 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4062.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4062.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..dcf86088fc4f32de7ad681561a09bad2755af04c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4062.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright 2024 Analog Devices Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/adi,ad4062.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD4062 ADC family device driver
> +
> +maintainers:
> +  - Jorge Marques <jorge.marques@...log.com>
> +
> +description: |
> +  Analog Devices AD4062 Single Channel Precision SAR ADC family
> +
> +  https://www.analog.com/media/en/technical-documentation/data-sheets/ad4060.pdf
> +  https://www.analog.com/media/en/technical-documentation/data-sheets/ad4062.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad4060
> +      - adi,ad4062
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    minItems: 1
> +    maxItems: 2
> +
> +  interrupt-names:
> +    items:
> +      - const: gp0
> +        description: Signal coming from the GP0 pin.
> +      - const: gp1
> +        description: Signal coming from the GP1 pin.

Please move the descriptions to the interrupts property, by creating an
items list there. I think more information should probably be provided
about them, than just "signal coming from", perhaps referencing the
ability for what the signal actually represents being controllable at
runtime.

> +
> +  vdd-supply:
> +    description: Analog power supply.
> +
> +  vio-supply:
> +    description: Digital interface logic power supply.
> +
> +  ref-supply:
> +    description: |
> +      Reference voltage to set the ADC full-scale range. If not present,
> +      vdd-supply is used as the reference voltage.
> +
> +required:
> +  - compatible
> +  - reg
> +  - vdd-supply
> +  - vio-supply
> +
> +allOf:
> +  - $ref: /schemas/i3c/i3c.yaml#
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i3c {
> +        #address-cells = <3>;
> +        #size-cells = <0>;
> +
> +        ad4062: adc@0,2ee007c0000 {

Remove the ad4062 label here, since there are no users.

Cheers,
Conor.

pw-bot: changes-requested

> +            reg = <0x0 0x2ee 0x7c0000>;
> +            vdd-supply = <&vdd>;
> +            vio-supply = <&vio>;
> +            ref-supply = <&ref>;
> +
> +            gp1-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
> +            gp0-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
> +            interrupt-parent = <&gpio>;
> +            interrupts = <0 0 IRQ_TYPE_EDGE_RISING>,
> +                         <0 1 IRQ_TYPE_EDGE_FALLING>;
> +            interrupt-names = "gp0", "gp1";
> +        };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index f090c2f6e63a0d255a025885cc4573f5802ef159..afbfaeba5387b9fbfa9bf1443a059c47dd596d45 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1400,6 +1400,12 @@ F:	Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
>  F:	Documentation/iio/ad4030.rst
>  F:	drivers/iio/adc/ad4030.c
>  
> +ANALOG DEVICES INC AD4062 DRIVER
> +M:	Jorge Marques <jorge.marques@...log.com>
> +S:	Supported
> +W:	https://ez.analog.com/linux-software-drivers
> +F:	Documentation/devicetree/bindings/iio/adc/adi,ad4062.yaml
> +
>  ANALOG DEVICES INC AD4080 DRIVER
>  M:	Antoniu Miclaus <antoniu.miclaus@...log.com>
>  L:	linux-iio@...r.kernel.org
> 
> -- 
> 2.49.0
> 

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