Re: [Buildroot] [PATCH v2] linux: add support for device tree overlays

From: Niklas Cassel via buildroot <buildroot@buildroot.org>
To: Michael Walle <michael@walle.cc>
Cc: "buildroot@buildroot.org" <buildroot@buildroot.org>,
	"Gaël PORTAY" <gael.portay@rtone.fr>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Martin Bark" <martin@barkynet.com>,
	"Julien Grossholtz" <julien.grossholtz@openest.io>,
	"Damien Le Moal" <dlemoal@kernel.org>
Subject: Re: [Buildroot] [PATCH v2] linux: add support for device tree overlays
Date: Wed, 23 Oct 2024 14:04:01 +0000	[thread overview]
Message-ID: <ZxkCUCUw5bVSlgRo@ryzen> (raw)
In-Reply-To: <ZtWx2nqI0YTpwb-P@ryzen.lan>

On Mon, Sep 02, 2024 at 02:38:50PM +0200, Niklas Cassel wrote:
> On Mon, Sep 02, 2024 at 01:27:35PM +0200, Michael Walle wrote:
> > The linux kernel can build device tree overlays (.dtbo) itself. Add
> > support to build and copy them along with the actual device trees.
> > These can either be in-tree device tree overlays
> > (BR2_LINUX_KERNEL_INTREE_DTSO_NAMES) or they can be provided outside of
> > the kernel (BR2_LINUX_KERNEL_CUSTOM_DTS_PATH). In the latter case, the
> > overlay source files will be copied into the kernel tree first.
> > 
> > Signed-off-by: Michael Walle <michael@walle.cc>
> > ---

Hello Michael,

Considering that this patch supports both in-tree and out-of-tree device
tree overlays.

I just saw this:
https://lore.kernel.org/buildroot/CAFOYHZDQmMRuK76TpOSAOFPdqAb4gpw=LNKfmpu=sqAD1EMhFg@mail.gmail.com/T/#u
https://lore.kernel.org/all/CAK7LNAR4h6NZ+D0BK+q4VQBeHWpjzRBQFQ9ovBrftM=6dHRcUg@mail.gmail.com/

It appears that it will no longer work to copy out-of-tree source files
into the kernel directory (which this patch does).

Does perhaps this patch need a V3 that drops support for out-of-tree
device tree overlays?

Kind regards,
Niklas
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