linux-kernel - Re: [PATCH] docs: dt: writing-schema: Describe validating one DTB

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Message-ID: <20250124223928.GA2546661-robh@kernel.org>
Date: Fri, 24 Jan 2025 16:39:28 -0600
From: Rob Herring <robh@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] docs: dt: writing-schema: Describe validating one DTB

On Thu, Jan 23, 2025 at 03:50:09PM +0100, Krzysztof Kozlowski wrote:
> Running DT schema validation with `dtbs_check` is time consuming thus we
> also have ability to check only one DTB target like:
> 
>   make -j8 DT_SCHEMA_FILES=gpio CHECK_DTBS=y qcom/sm8450-hdk.dtb

It's kind of duplicated because "make help" has:

  make CHECK_DTBS=1 [targets] Check all generated dtb files against schema
         This can be applied both to "dtbs" and to individual "foo.dtb" targets

> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  Documentation/devicetree/bindings/writing-schema.rst | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/writing-schema.rst b/Documentation/devicetree/bindings/writing-schema.rst
> index eb8ced400c7e..6dea741c5962 100644
> --- a/Documentation/devicetree/bindings/writing-schema.rst
> +++ b/Documentation/devicetree/bindings/writing-schema.rst
> @@ -222,6 +222,10 @@ separated by ':'.
>      make dt_binding_check DT_SCHEMA_FILES=/gpio/
>      make dtbs_check DT_SCHEMA_FILES=trivial-devices.yaml
>  
> +Validation of one DT source by providing Makefile target::
> +
> +    make CHECK_DTBS=y target.dtb
> +    make DT_SCHEMA_FILES=xxx.yaml CHECK_DTBS=y target.dtb

Perhaps dir/target.dtb

Though that may prompt folks to do:

make arch/$ARCH/boot/dts/target.dtb

You need just the sub-dirs under arch/*/boot/dts/ as part of the target. 

>  
>  json-schema Resources
>  ---------------------
> -- 
> 2.43.0
>