linux-kernel - Re: [PATCH 01/12] dt-bindings: display: st: add new compatible to LTDC device

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Message-Id: <175344554296.803203.4450272226884409035.robh@kernel.org>
Date: Fri, 25 Jul 2025 07:12:23 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>
Cc: dri-devel@...ts.freedesktop.org, Conor Dooley <conor+dt@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Maxime Ripard <mripard@...nel.org>, 
 Christophe Roullier <christophe.roullier@...s.st.com>, 
 Yannick Fertre <yannick.fertre@...s.st.com>, Will Deacon <will@...nel.org>, 
 devicetree@...r.kernel.org, Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Philippe Cornu <philippe.cornu@...s.st.com>, 
 Catalin Marinas <catalin.marinas@....com>, 
 Thomas Zimmermann <tzimmermann@...e.de>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 linux-arm-kernel@...ts.infradead.org, Simona Vetter <simona@...ll.ch>, 
 linux-kernel@...r.kernel.org, David Airlie <airlied@...il.com>, 
 linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH 01/12] dt-bindings: display: st: add new compatible to
 LTDC device


On Fri, 25 Jul 2025 12:03:53 +0200, Raphael Gallais-Pou wrote:
> The new STMicroelectronics SoC features a display controller similar to
> the one used in previous SoCs.  Because there is additional registers,
> it is incompatible with existing IPs.
> 
> Add the new name to the list of compatible string.
> 
> Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>
> ---
>  .../devicetree/bindings/display/st,stm32-ltdc.yaml | 37 +++++++++++++++++++---
>  1 file changed, 33 insertions(+), 4 deletions(-)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:
./Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml:78:7: [warning] wrong indentation: expected 8 but found 6 (indentation)

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml: else:properties:clock-names: {'maxItems': 4, 'items': [{'const': 'bus'}, {'const': 'lcd'}, {'const': 'ref'}, {'const': 'lvds'}]} should not be valid under {'required': ['maxItems']}
	hint: "maxItems" is not needed with an "items" list
	from schema $id: http://devicetree.org/meta-schemas/items.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml: then:properties:clock-names: {'maxItems': 1, 'items': [{'const': 'lcd'}]} should not be valid under {'required': ['maxItems']}
	hint: "maxItems" is not needed with an "items" list
	from schema $id: http://devicetree.org/meta-schemas/items.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20250725-drm-misc-next-v1-1-a59848e62cf9@foss.st.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.