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Message-Id: <171873566448.3500109.16734660300499772836.robh@kernel.org>
Date: Tue, 18 Jun 2024 12:34:24 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Nishanth Menon <nm@...com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, Conor Dooley <conor+dt@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, linux-gpio@...r.kernel.org, 
 Linus Walleij <linus.walleij@...aro.org>, Tony Lindgren <tony@...mide.com>
Subject: Re: [PATCH] dt-bindings: pinctrl: pinctrl-single: Define a max
 count for "pinctrl-single,gpio-range"


On Tue, 18 Jun 2024 11:51:02 -0500, Nishanth Menon wrote:
> "pinctrl-single,gpio-range" allows us to define a dis-contiguous
> range of pinctrl registers that can have different mux settings for
> GPIO mode of operation. However, the maxItems seem to be set to 1 in
> processed schema for some reason. This is incorrect. For example:
> arch/arm64/boot/dts/hisilicon/hi6220.dtsi and others have more than
> one dis-contiguous range.
> 
> Arbitrarily define a max 100 count to override the defaults.
> 
> Signed-off-by: Nishanth Menon <nm@...com>
> ---
> I am not sure if I should call this RFC or not.. and if this is even the
> right solution.. I am on 2024.05 dt-schema for this check.
> 
> I noticed this when adding gpio-ranges for am62p platform:
> https://gist.github.com/nmenon/7019cd2f24be47997640df5db60a7544
> 
> It is possible that this is a bug in dt-schema, but I have'nt been able
> to track it down either.
> 
> behavior seen is the following:
> pinctrl-single,gpio-range = <&mcu_pmx_range 0 21 7>;
> generates no warning
> However,
> pinctrl-single,gpio-range = <&mcu_pmx_range 0 21 7>, <&mcu_pmx_range 32 2 7>;
> 
> generates "is too long" warning.
> 
> 
>  Documentation/devicetree/bindings/pinctrl/pinctrl-single.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

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

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pinctrl/pinctrl-single.yaml: properties:pinctrl-single,gpio-range: {'description': 'Optional list of pin base, nr pins & gpio function', '$ref': '/schemas/types.yaml#/definitions/phandle-array', 'maxItems': 100, 'items': [{'items': [{'description': 'phandle of a gpio-range node'}, {'description': 'pin base'}, {'description': 'number of pins'}, {'description': 'gpio function'}]}]} 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/20240618165102.2380159-1-nm@ti.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.


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