From: Rob Herring <robh@kernel.org>
To: "Andreas Färber" <afaerber@suse.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
devicetree@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Michal Marek <michal.lkml@markovi.net>,
Vineet Gupta <vgupta@synopsys.com>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Michal Simek <monstr@monstr.eu>,
Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Chris Zankel <chris@zankel.net>,
Max Filippov <jcmvbkbc@gmail.com>,
Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
arcml <linux-snps-arc@lists.infradead.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
"moderated list:H8/300 ARCHITECTURE"
<uclinux-h8-devel@lists.sourceforge.jp>,
Linux-MIPS <linux-mips@linux-mips.org>,
nios2-dev@lists.rocketboards.org,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
linux-xtensa@linux-xtensa.org, Will Deacon <will.deacon@arm.com>,
Paul Burton <paul.burton@mips.com>,
Ley Foon Tan <ley.foon.tan@intel.com>
Subject: Re: [PATCH v3 6/9] kbuild: consolidate Devicetree dtb build rules
Date: Fri, 28 Sep 2018 13:41:51 -0500 [thread overview]
Message-ID: <CAL_JsqKLOohxGx0Je9niMQ5H3o0Y=EcMQTB6YkbV0sfUOZHu8g@mail.gmail.com> (raw)
In-Reply-To: <75740733-d0d4-4c0c-838c-f01a5e7291d3@suse.de>
On Fri, Sep 28, 2018 at 12:21 PM Andreas Färber <afaerber@suse.de> wrote:
>
> Hi Geert,
>
> Am 13.09.18 um 17:51 schrieb Geert Uytterhoeven:
> > On Wed, Sep 12, 2018 at 3:02 AM Masahiro Yamada
> > <yamada.masahiro@socionext.com> wrote:
> >> Even x86 can enable OF and OF_UNITTEST.
> >>
> >> Another solution might be,
> >> guard it by 'depends on ARCH_SUPPORTS_OF'.
> >>
> >> This is actually what ACPI does.
> >>
> >> menuconfig ACPI
> >> bool "ACPI (Advanced Configuration and Power Interface) Support"
> >> depends on ARCH_SUPPORTS_ACPI
> >> ...
> >
> > ACPI is a real platform feature, as it depends on firmware.
> >
> > CONFIG_OF can be enabled, and DT overlays can be loaded, on any platform,
> > even if it has ACPI ;-)
>
> How would loading a DT overlay work on an ACPI platform? I.e., what
> would it overlay against and how to practically load such a file?
The DT unittests do just that. I run them on x86 and UM builds. In
this case, the loading source is built-in.
> I wonder whether that could be helpful for USB devices and serdev...
How to load the overlays is pretty orthogonal to the issues to be
solved here. It would certainly be possible to move forward with
prototyping this and just have the overlay built-in. It may not even
need to be an overlay if we can support multiple root nodes.
Rob
next prev parent reply other threads:[~2018-09-28 18:42 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-10 15:03 [PATCH v3 0/9] Devicetree build consolidation Rob Herring
2018-09-10 15:03 ` [PATCH v3 1/9] powerpc: build .dtb files in dts directory Rob Herring
2018-09-27 13:39 ` Rob Herring
2018-09-10 15:03 ` [PATCH v3 2/9] nios2: " Rob Herring
2018-09-10 15:03 ` [PATCH v3 3/9] nios2: use common rules to build built-in dtb Rob Herring
2018-09-10 15:03 ` [PATCH v3 4/9] nios2: fix building all dtbs Rob Herring
2018-09-10 15:03 ` [PATCH v3 5/9] c6x: use common built-in dtb support Rob Herring
2018-09-10 15:04 ` [PATCH v3 6/9] kbuild: consolidate Devicetree dtb build rules Rob Herring
2018-09-11 15:40 ` Rob Herring
2018-09-12 1:00 ` Masahiro Yamada
2018-09-13 15:51 ` Geert Uytterhoeven
2018-09-23 10:31 ` Masahiro Yamada
2018-09-28 15:41 ` Rob Herring
2018-10-01 5:49 ` Masahiro Yamada
2018-10-01 13:25 ` Rob Herring
2018-10-01 14:48 ` Masahiro Yamada
2018-09-28 17:21 ` Andreas Färber
2018-09-28 18:41 ` Rob Herring [this message]
2018-10-01 7:53 ` Geert Uytterhoeven
2018-09-10 15:04 ` [PATCH v3 7/9] powerpc: enable building all dtbs Rob Herring
2018-09-10 15:04 ` [PATCH v3 8/9] c6x: " Rob Herring
2018-09-10 15:04 ` [PATCH v3 9/9] microblaze: " Rob Herring
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAL_JsqKLOohxGx0Je9niMQ5H3o0Y=EcMQTB6YkbV0sfUOZHu8g@mail.gmail.com' \
--to=robh@kernel.org \
--cc=afaerber@suse.de \
--cc=benh@kernel.crashing.org \
--cc=catalin.marinas@arm.com \
--cc=chris@zankel.net \
--cc=devicetree@vger.kernel.org \
--cc=frowand.list@gmail.com \
--cc=geert@linux-m68k.org \
--cc=jcmvbkbc@gmail.com \
--cc=jhogan@kernel.org \
--cc=ley.foon.tan@intel.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kbuild@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@linux-mips.org \
--cc=linux-snps-arc@lists.infradead.org \
--cc=linux-xtensa@linux-xtensa.org \
--cc=linux@armlinux.org.uk \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=michal.lkml@markovi.net \
--cc=monstr@monstr.eu \
--cc=mpe@ellerman.id.au \
--cc=nios2-dev@lists.rocketboards.org \
--cc=paul.burton@mips.com \
--cc=paulus@samba.org \
--cc=ralf@linux-mips.org \
--cc=uclinux-h8-devel@lists.sourceforge.jp \
--cc=vgupta@synopsys.com \
--cc=will.deacon@arm.com \
--cc=yamada.masahiro@socionext.com \
--cc=ysato@users.sourceforge.jp \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).