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From:   Masahiro Yamada <masahiroy@kernel.org>
Date:   Thu, 11 Mar 2021 00:18:57 +0900
Message-ID: <CAK7LNAQBtrG3nF7YtuRhog+ZZpCRGg22b88VkCga7-em57NyDg@mail.gmail.com>
Subject: Re: [PATCH V11 3/5] kbuild: Allow .dtso format for overlay source files
To:     Viresh Kumar <viresh.kumar@linaro.org>
Cc:     Michal Marek <michal.lkml@markovi.net>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        David Gibson <david@gibson.dropbear.id.au>,
        Frank Rowand <frowand.list@gmail.com>,
        Michal Simek <michal.simek@xilinx.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Anmar Oueja <anmar.oueja@linaro.org>,
        Bill Mills <bill.mills@linaro.org>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Wed, Mar 10, 2021 at 11:48 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
>
> On 10-03-21, 20:29, Masahiro Yamada wrote:
> > BTW, is the attached patch good for DTC?
> >
> > I do not know when '-O dtbo' is useful,
> > unless I am missing something.
>
> It is useful if we are sending the -O option all the time (I have
> already given more details to your patch) as outform will not be NULL.


"-O dtbo" was useful to make your buggy patch work.

That is not justification.


.yaml   ->  -O yaml
.dtb    ->  -O dtb
.dtbo   ->  -O dtb

is the correct if you want to give -O explicitly.


-- 
Best Regards
Masahiro Yamada