linux-kernel - Re: [PATCH] kbuild: Add DTB_FILES variable for dtbs

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Message-ID: <20221102214654.axyptitp5kpq3wcq@notapiano>
Date:   Wed, 2 Nov 2022 17:46:54 -0400
From:   Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
To:     Rob Herring <robh@...nel.org>
Cc:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, kernel@...labora.com,
        Masahiro Yamada <masahiroy@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] kbuild: Add DTB_FILES variable for dtbs_check

On Wed, Nov 02, 2022 at 01:13:48PM -0400, Nícolas F. R. A. Prado wrote:
> On Tue, Nov 01, 2022 at 06:03:03PM -0400, Nícolas F. R. A. Prado wrote:
> > Currently running dtbs_check compiles and runs the DT checker on all
> > enabled devicetrees against all dt-bindings. This can take a long time,
> > and is an unnecessary burden when just validating a new devicetree or
> > changes in an existing one, with the dt-bindings unchanged.
> > 
> > Similarly to DT_SCHEMA_FILES for dt_binding_check, add a DTB_FILES
> > variable that can be passed to the dtbs_check make command to restrict
> > which devicetrees are validated.
> > 
> > Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> > 
> > ---
> > Usage example:
> > make dtbs_check DTB_FILES='arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dtb arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dtb'
> 
> Hi,
> 
> I have just learned that it is already possible to achieve the same thing by
> passing the dtbs explicitly to make and enabling the DTBS_CHECK flag like so:
> 
> make CHECK_DTBS=y mediatek/mt8192-asurada-spherion-r0.dtb
> 
> This flag isn't documented anywhere outside the Makefile however. So I'll send a
> patch documenting it shortly, and this commit can be ignored.

Patch: https://lore.kernel.org/all/20221102214300.309347-1-nfraprado@collabora.com

Thanks,
Nícolas