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

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Message-ID: <20210205092507.fdxotdjlq5rjs2yh@vireshk-i7>
Date:   Fri, 5 Feb 2021 14:55:07 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.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)

On 05-02-21, 10:02, Geert Uytterhoeven wrote:
> Hi Viresh,
> 
> 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.

-- 
viresh