[PATCH v2 1/2] dts: Add ability to build fallback DTBOs from arch/$(ARCH)/dts

[Simon Glass]

On Fri, 4 Oct 2024 at 19:13, Marek Vasut <marex at denx.de> wrote:
>
> Currently the enablement of OF_UPSTREAM results on the build system
> searching for DTs only in dts/upstream/ . There are platforms which
> use U-Boot specific DTBOs applied on top of U-Boot control DT during
> SPL stage, and source DTs for these are located in arch/$(ARCH)/dtb.
>
> Add dedicated 'dtbos' target which builds only .dtbos and not .dtbs and
> in case CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS is enabled, build
> this target for arch/$(ARCH)/dtb to generate local U-Boot specific DTBOs.
>
> Adjust top level Makefile so binman would search for .dtb and .dtbo in
> both OF_UPSTREAM specific paths and arch/$(ARCH)/dtb for the .dtbo case
> in case CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS is enabled.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> ---
> Cc: "NXP i.MX U-Boot Team" <uboot-imx at nxp.com>
> Cc: Caleb Connolly <caleb.connolly at linaro.org>
> Cc: Christoph Niedermaier <cniedermaier at dh-electronics.com>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Heinrich Schuchardt <xypron.glpk at gmx.de>
> Cc: Jonas Karlman <jonas at kwiboo.se>
> Cc: Lothar Rubusch <l.rubusch at gmail.com>
> Cc: Michal Simek <michal.simek at amd.com>
> Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
> Cc: Rasmus Villemoes <rasmus.villemoes at prevas.dk>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Sumit Garg <sumit.garg at linaro.org>
> Cc: Tom Rini <trini at konsulko.com>
> Cc: u-boot at dh-electronics.com
> Cc: u-boot at lists.denx.de
> ---
> V2: Gate this functionality behind CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS
> ---
> NOTE: Depends on https://lore.kernel.org/u-boot/20241004001118.322531-1-marex@denx.de/
> ---
>  Makefile             |  4 ++++
>  dts/Kconfig          | 16 ++++++++++++++++
>  dts/Makefile         | 14 +++++++++++++-
>  scripts/Makefile.dts |  6 ++++++
>  4 files changed, 39 insertions(+), 1 deletion(-)

Reviewed-by: Simon Glass <sjg at chromium.org>

Congratulations, you win the prize for the longest CONFIG name!