linux-kernel - Re: linux-next: build warnings after merge of the devicetree tree

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Message-ID: <CAL_JsqKTP3x+Z0=hYtzmuNBWc_Qjgvrr0zSjNcJMk9BxZLZvuw@mail.gmail.com>
Date: Thu, 18 Dec 2025 07:06:02 -0600
From: Rob Herring <robh@...nel.org>
To: Stephen Rothwell <sfr@...b.auug.org.au>, Florian Fainelli <florian.fainelli@...adcom.com>, 
	Matthias Brugger <mbrugger@...e.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build warnings after merge of the devicetree tree

+platform maintainers

On Thu, Dec 18, 2025 at 4:15 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> On Tue, 16 Dec 2025 12:19:24 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > On Sat, 29 Nov 2025 09:31:41 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > >
> > > On Fri, 28 Nov 2025 08:54:34 -0600 Rob Herring <robh@...nel.org> wrote:
> > > >
> > > > On Thu, Nov 27, 2025 at 11:10 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > > > >
> > > > > On Tue, 18 Nov 2025 14:38:43 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > > > > >
> > > > > > After merging the devicetree tree, today's linux-next build (arm64
> > > > > > defconfig) produced these warnings:
> > > > > >
> > > > > > scripts/Makefile.dtbs:20: .dtbo is not applied to any base: rp1.dtbo
> > > > > > scripts/Makefile.dtbs:20: .dtbo is not applied to any base: mt7986a-bananapi-bpi-r3-emmc.dtbo mt7986a-bananapi-bpi-r3-nand.dtbo mt7986a-bananapi-bpi-r3-nor.dtbo mt7986a-bananapi-bpi-r3-sata.dtbo mt7986a-bananapi-bpi-r3-sd.dtbo mt7988a-bananapi-bpi-r4-emmc.dtbo mt7988a-bananapi-bpi-r4-pro-cn15.dtbo mt7988a-bananapi-bpi-r4-pro-cn18.dtbo mt7988a-bananapi-bpi-r4-pro-emmc.dtbo mt7988a-bananapi-bpi-r4-pro-sd.dtbo mt7988a-bananapi-bpi-r4-sd.dtbo mt8395-radxa-nio-12l-8-hd-panel.dtbo
> > > > > > scripts/Makefile.dtbs:20: .dtbo is not applied to any base: k3-am62x-phyboard-lyra-gpio-fan.dtbo k3-am62-lp-sk-nand.dtbo k3-am642-phyboard-electra-gpio-fan.dtbo k3-am642-phyboard-electra-pcie-usb2.dtbo k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtbo k3-am642-phyboard-electra-peb-c-010.dtbo k3-am6xx-phycore-disable-eth-phy.dtbo k3-am6xx-phycore-disable-rtc.dtbo k3-am6xx-phycore-disable-spi-nor.dtbo k3-am6xx-phycore-qspi-nor.dtbo k3-j721e-evm-gesi-exp-board.dtbo k3-am67a-kontron-sa67-gpios.dtbo

FWIW, the fix for this last one is in next.

Still waiting for the platform maintainers to pick up the other 2 fixes...

> > > > > >
> > > > > > Exposed by commit
> > > > > >
> > > > > >   d8c8a575f5aa ("kbuild: Ensure .dtbo targets are applied to a base .dtb")
> > > > >
> > > > > I am still seeing these warnings.
> > > >
> > > > Patches are posted to fix all of them[1][2][3].
> > > >
> > > > Rob
> > > >
> > > > [1] https://lore.kernel.org/all/20251117211503.728354-2-robh@kernel.org/
> > > > [2] https://lore.kernel.org/all/20251117211306.725678-1-robh@kernel.org/
> > > > [3] https://lore.kernel.org/all/20251117211316.725960-1-robh@kernel.org/
> > >
> > > Thanks.
> >
> > I am still seeing these warnings.
>
> Since yesterday (I think) I have started getting these messages twice.

I can confirm that. I suspect that's due to some kbuild changes in my
tree to support "make arch/arm64/boot/dts/foo/" targets.

Rob