linux-kernel - Aw: Re: [PATCH v1 1/2] dt-bindings: mmc: mtk-sd: update assigned-clocks/clock-parents for mt7986

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Message-ID: <trinity-28cad1dc-f8e0-4f65-874f-a2392c2e878e-1687867773444@3c-app-gmx-bs07>
Date:   Tue, 27 Jun 2023 14:09:33 +0200
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Frank Wunderlich <linux@...web.de>,
        linux-mediatek@...ts.infradead.org,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Wenbin Mei <wenbin.mei@...iatek.com>,
        Sam Shih <sam.shih@...iatek.com>, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Aw: Re: [PATCH v1 1/2] dt-bindings: mmc: mtk-sd: update
 assigned-clocks/clock-parents for mt7986

> Gesendet: Dienstag, 27. Juni 2023 um 12:44 Uhr
> Von: "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org>
> Betreff: Re: [PATCH v1 1/2] dt-bindings: mmc: mtk-sd: update assigned-clocks/clock-parents for mt7986
>
> On 25/06/2023 21:11, Frank Wunderlich wrote:
> > From: Frank Wunderlich <frank-w@...lic-files.de>
> >
> > MT7986 has 2 clock-parents so update the binding for it.
>
> You didn't test it, I think. If you do, then you will see errors from
> other trees.

Hi,

i tested it of course...which errors do you see?

this is basicly how i tested it (in case anything has changed):

        logfile=dtbs_arm64.log
        exec 3> >(tee $logfile)
        ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make DT_CHECKER_FLAGS=-m dt_binding_check 2>&3
        if [[ $? -ne 0 ]];then echo "arm64 binding check failed!";cat $logfile;exit 1;fi
        ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make defconfig #dtbs_check need kernel-config
        ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make -j8 DT_CHECKER_FLAGS=-m dtbs_check 2>&3
        if [[ $? -ne 0 ]];then echo "arm64 dtbs_check failed!";cat $logfile;exit 1;fi

and looked into the resulting logfile for keywords like mmc like mtk-sd

i tried running dtbs_check with passing the yaml-file, but of course all compatibles not matching this file were reported.

ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make -j6 DT_CHECKER_FLAGS=-m dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/mmc/mtk-sd.yaml

but this spits out many errors "failed to match any schema with compatible" because i defined only the changed one...

maybe there is another way to check only one yaml file against all dtbs without these unrelated errors.

pipeline in dt-bindings-patchwork is clean too
https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230625191151.7808-2-linux@fw-web.de/

> Anyway, I don't understand why defining it in the first place. Just drop
> the assigned-clock* from the binding.

as it was defined (not looked where it was used) i only used the soc-specific branch to update the MaxItems...just to not break anything. After that the message i got before was fixed

arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dtb: mmc@...30000: assigned-clocks: [[4, 35], [4, 34]] is too long
arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dtb: mmc@...30000: assigned-clock-parents: [[5, 6], [4, 18]] is too long

but if the right way is to drop the MaxItems from generic (or the property itself - where is it taken from then?). The only
include i see is Documentation/devicetree/bindings/mmc/mmc-controller.yaml and there the assigned-clock* is not defined. And the

unevaluatedProperties: false

tells me that removing the generic one will result in unevaluated propety error.

regards Frank


> Best regards,
> Krzysztof
>
>