linux-kernel - Re: [PATCH V7 4/6] kbuild: Add support to build overlays (%.dtbo)

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Message-ID: <CAMuHMdWUMcMcJxnC+oML8P0+r72_+d6RWGY50dOWCUECdJGWPA@mail.gmail.com>
Date:   Fri, 5 Feb 2021 10:41:17 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        anmar.oueja@...aro.org, Bill Mills <bill.mills@...aro.org>,
        David Gibson <david@...son.dropbear.id.au>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-kbuild <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH V7 4/6] kbuild: Add support to build overlays (%.dtbo)

Hi Viresh,

On Fri, Feb 5, 2021 at 10:25 AM Viresh Kumar <viresh.kumar@...aro.org> wrote:
> On 05-02-21, 10:02, Geert Uytterhoeven wrote:
> > Thanks for your patch
> > (which I only noticed because it appeared in dt-rh/for-next ;-)
> >
> > On Fri, Jan 29, 2021 at 8:31 AM Viresh Kumar <viresh.kumar@...aro.org> wrote:
> > > Add support for building DT overlays (%.dtbo). The overlay's source file
> > > will have the usual extension, i.e. .dts, though the blob will have
> >
> > Why use .dts and not .dtso for overlays?
> > Because you originally (until v5) had a single rule for building .dtb
> > and .dtbo files?
>
> I am fine with doing that as well if Rob and David agree to it. Rob
> did suggest that at one point but we didn't do much about it later on
> for some reason.
>
> FWIW, this will also require a change in the DTC compiler.

Care to explain why? I've been using .dtsi for ages in
https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/log/?h=topic/renesas-overlays

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds