linux-kernel - Re: [PATCH v4 1/2] dt-bindings: touchscreen: add ad7877 support

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Message-ID: <mv6ybaysehpwegett4it26f2r63iucjjbzchujv3szryp2mcfu@liiwawl74h7x>
Date: Mon, 16 Sep 2024 11:00:05 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Antoniu Miclaus <antoniu.miclaus@...log.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Michael Hennerich <michael.hennerich@...log.com>, 
	Mark Brown <broonie@...nel.org>, linux-input@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH v4 1/2] dt-bindings: touchscreen: add ad7877 support

On Fri, Sep 13, 2024 at 10:52:29AM +0300, Antoniu Miclaus wrote:
> Add device tree bindings for ad7877.
> 
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
> ---
> changes in v4:
>  - add bindings patch first
>  - update commit title/body based on review.
>  - add units for pen-down-acc-interval property.
>  - add default value for adi,acquisition-time-us and adi,vref-delay-us property
>  .../input/touchscreen/adi,ad7877.yaml         | 106 ++++++++++++++++++
>  1 file changed, 106 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml
> new file mode 100644
> index 000000000000..c472f50f7a59
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml
> @@ -0,0 +1,106 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/touchscreen/adi,ad7877.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD7877 Touch Screen Controller
> +
> +maintainers:
> +  - Antoniu Miclaus <antoniu.miclaus@...log.com>
> +
> +description: |
> +  Analog Devices Touch Screen Controller
> +  https://www.analog.com/media/en/technical-documentation/data-sheets/AD7877.pdf
> +
> +allOf:
> +  - $ref: touchscreen.yaml#
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad7877
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    description: AD7877 SPI bus clock frequency.
> +    minimum: 10000
> +    maximum: 20000000
> +
> +  adi,stopacq-polarity:
> +    description: The polarity of the signal applied to the STOPACQ pin.
> +    $ref: /schemas/types.yaml#/definitions/string
> +    enum: [low, high]

Missing default.

> +
> +  adi,first-conv-delay-ns:
> +    description: Delay in ns before the first conversion.
> +    enum: [500, 128000, 1000000, 8000000]

Missing default.


Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof