linux-kernel - Re: [PATCH 1/1] dt-bindings: iio: pressure: Remove vdd-supply and vddio-supply from required list

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Message-ID: <0e00bb14-19c7-493a-9629-354bac3a273e@baylibre.com>
Date: Wed, 22 Oct 2025 12:03:27 -0500
From: David Lechner <dlechner@...libre.com>
To: Frank Li <Frank.Li@....com>, Jonathan Cameron <jic23@...nel.org>,
 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>, Antoni Pokusinski <apokusinski01@...il.com>,
 Vasileios Amoiridis <vassilisamir@...il.com>,
 Justin Weiss <justin@...tinweiss.com>,
 "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
 "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
 <devicetree@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>
Cc: imx@...ts.linux.dev
Subject: Re: [PATCH 1/1] dt-bindings: iio: pressure: Remove vdd-supply and
 vddio-supply from required list

On 10/22/25 11:41 AM, Frank Li wrote:
> Some board designs connect vdd and vddio to the system power supply. Remove
> these properties from the required list and make them optional, since
> drivers/iio/pressure/mpl3115.c does not use them.
> 
> Fix below CHECK_DTBS warnings:
> arch/arm64/boot/dts/freescale/imx8qm-mek.dtb: pressure-sensor@60 (fsl,mpl3115): 'vdd-supply' is a required property
>         from schema $id: http://devicetree.org/schemas/iio/pressure/fsl,mpl3115.yaml#
> 

Why not just add the required properties to the .dts file?

> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  Documentation/devicetree/bindings/iio/pressure/fsl,mpl3115.yaml | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/pressure/fsl,mpl3115.yaml b/Documentation/devicetree/bindings/iio/pressure/fsl,mpl3115.yaml
> index 2933c2e10695e..04703a01cf7af 100644
> --- a/Documentation/devicetree/bindings/iio/pressure/fsl,mpl3115.yaml
> +++ b/Documentation/devicetree/bindings/iio/pressure/fsl,mpl3115.yaml
> @@ -47,8 +47,6 @@ properties:
>  required:
>    - compatible
>    - reg
> -  - vdd-supply
> -  - vddio-supply
>  
>  additionalProperties: false
>