linux-kernel - Re: [PATCH v4 2/4] dt-bindings: display: st,stm32-dsi: Remove unnecessary fields

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Date:   Tue, 30 May 2023 15:38:37 +0200
From:   Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>
To:     Alexandre TORGUE <alexandre.torgue@...s.st.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC:     <linux-stm32@...md-mailman.stormreply.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        David Airlie <airlied@...il.com>,
        Yannick Fertre <yannick.fertre@...s.st.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        <kernel@...electronics.com>, Marek Vasut <marex@...x.de>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>,
        Rob Herring <robh+dt@...nel.org>,
        Philippe Cornu <philippe.cornu@...s.st.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH v4 2/4] dt-bindings: display: st,stm32-dsi: Remove
 unnecessary fields


On 5/30/23 15:30, Alexandre TORGUE wrote:
> On 5/30/23 14:27, Krzysztof Kozlowski wrote:
>> On Mon, 29 May 2023 11:13:57 +0200, Raphael Gallais-Pou wrote:
>>> "#address-cells" and "#size-cells" are two properties that are not
>>> mandatory. For instance, the DSI could refer to a bridge outside the scope
>>> of the node rather than include a 'panel@0' subnode. By doing so, address
>>> and size fields become then unnecessary, creating a warning at build time.
>>>
>>> Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>
>>> Acked-by: Conor Dooley <conor.dooley@...rochip.com>
>>> Reviewed-by: Marek Vasut <marex@...x.de>
>>> ---
>>>   Documentation/devicetree/bindings/display/st,stm32-dsi.yaml | 2 --
>>>   1 file changed, 2 deletions(-)
>>>
>>
>> Running 'make dtbs_check' with the schema in this patch gives the
>> following warnings. Consider if they are expected or the schema is
>> incorrect. These may not be new warnings
> I checked it before merging the series on stm32-next tree. I didn't get this
> error. I didn't check commit per commit.
>
> Do you get this error after merging the whole series ?


I think this is because of the order of the patches within the serie. The patch
correcting the yaml is before those modifying the device-trees. This could
explain warnings rise up when checking patch per patch. However I did not get
any errors on top of  the whole serie.

>
>
>>
>> Note that it is not yet a requirement to have 0 warnings for dtbs_check.
>> This will change in the future.
>>
>> Full log is available here: https://patchwork.ozlabs.org/patch/1787034
>>
>>
>> dsi@...16c00: Unevaluated properties are not allowed ('panel-dsi@0' was
>> unexpected)
>>     arch/arm/boot/dts/stm32f469-disco.dtb
>>
>> dsi@...00000: Unevaluated properties are not allowed ('panel-dsi@0' was
>> unexpected)
>>     arch/arm/boot/dts/stm32mp157c-ev1.dtb
>>     arch/arm/boot/dts/stm32mp157c-ev1-scmi.dtb
>