linux-kernel - Re: [PATCH 1/3] dt-bindings: iio: pressure: Add Sensirion SDP500

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Date: Tue, 16 Jan 2024 16:31:55 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Petar Stoykov <pd.pstoykov@...il.com>, linux-iio@...r.kernel.org
Cc: Jonathan Cameron <jic23@...nel.org>, Lars-Peter Clausen
 <lars@...afoo.de>, Rob Herring <robh+dt@...nel.org>,
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 Angel Iglesias <ang.iglesiasg@...il.com>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: iio: pressure: Add Sensirion SDP500

On 16/01/2024 16:24, Petar Stoykov wrote:
> Sensirion SDP500 is a digital differential pressure sensor. It provides
> a digital I2C output. Add devicetree bindings requiring the compatible
> string and I2C slave address (reg).
> 
> Signed-off-by: Petar Stoykov <pd.pstoykov@...il.com>
> ---
>  .../bindings/iio/pressure/sdp500.yaml         | 38 +++++++++++++++++++
>  1 file changed, 38 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/pressure/sdp500.yaml

Filename like compatible.

> 
> diff --git a/Documentation/devicetree/bindings/iio/pressure/sdp500.yaml
> b/Documentation/devicetree/bindings/iio/pressure/sdp500.yaml
> new file mode 100644
> index 000000000000..af01ec7e3802
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/pressure/sdp500.yaml
> @@ -0,0 +1,38 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/pressure/sdp500.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: sdp500/sdp510 pressure sensor with I2C bus interface
> +
> +maintainers:
> +  - Petar Stoykov <pd.pstoykov@...il.com>
> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> +  Pressure sensor from Sensirion with I2C bus interface.
> +  There is no software difference between sdp500 and sdp510.
> +
> +properties:
> +  compatible:
> +    const: sensirion,sdp500
> +

No resources? No interrupts? No power supply or any pins? No even
iio-cells? This looks incomplete.

> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c3 {

i2c {

> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      sdp500@40 {

Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation



Best regards,
Krzysztof