linux-kernel - Re: [RFC PATCH 0/1] Categorize ARM dts directory

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Date:   Tue, 2 May 2023 14:01:01 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Daniel Palmer <daniel@...f.com>,
        Ansuel Smith <ansuelsmth@...il.com>,
        Claudiu Beznea <Claudiu.Beznea@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Santiago Esteban <Santiago.Esteban@...rochip.com>,
        Cristian Birsan <Cristian.Birsan@...rochip.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-actions@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-omap@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...s.com, linux-aspeed@...ts.ozlabs.org,
        linux-rpi-kernel@...ts.infradead.org,
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Subject: Re: [RFC PATCH 0/1] Categorize ARM dts directory

On Tue, Apr 25, 2023 at 11:21 AM Robin Murphy <robin.murphy@....com> wrote:
>
> On 29/03/2022 9:50 am, Nicolas Ferre wrote:
> > Ansuel, All,
> >
> > On 28/03/2022 at 10:55, Daniel Palmer wrote:
> >> Hi Ansuel
> >>
> >> On Mon, 28 Mar 2022 at 09:09, Ansuel Smith <ansuelsmth@...il.com> wrote:
> >>>
> >>> Hi,
> >>> as the title say, the intention of this ""series"" is to finally
> >>> categorize
> >>> the ARM dts directory in subdirectory for each oem.
> >>
> >> While I agree with this change and think it's for the good (browsing
> >> the ARM dts directory at the moment is frustrating..) I think
> >> buildroot and others need to be told about this as it'll potentially
> >> break their kernel build scripting for ARM and probably messes up the
> >> configs they have for existing boards.
> >
> > This aspect mustn't be underestimated and I anticipate lots of issues
> > during a long time on this particular topic of "build systems".
> >
> > Another aspect is CI and public or private testing farms we all have
> > running.
>
> Yet another is if this affects what `make dtbs_install` does (I don't
> know for sure, but I'd be inclined to suspect it might). Some distros
> use that to deliver the DTBs as part of their kernel package, so if
> paths suddenly change it could break end users' bootloader setups too.

Indeed, this came up last time. Turns out I had already implemented
support to maintain the flat install. I just re-wrote it since
Makefile.dtbinst changed completely since then.

Rob