u-boot.git/scripts/dtc, branch v2026.04

scripts/dtc: Fix pkg-config behavior under sysroot

2026-01-24T17:07:12+00:00

When building with a toolchain that uses a modified sysroot (such as a
Yocto-generated SDK) that does not include libyaml, on a host that does
have libyaml, building dtc will fail with errors like:

  HOSTLD  scripts/dtc/dtc
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld:
scripts/dtc/yamltree.o: in function `yaml_propval_int':
yamltree.c:(.text+0x167): undefined reference to
`yaml_sequence_start_event_initialize'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld:
yamltree.c:(.text+0x172): undefined reference to `yaml_emitter_emit'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld:
yamltree.c:(.text+0x1e8): undefined reference to
`yaml_scalar_event_initialize'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld:
yamltree.c:(.text+0x1f5): undefined reference to `yaml_emitter_emit'

(... rest of errors truncated ...)

This happens because the test looks for the file in the default path but
uses pkg-config, which is affected by changing sysroot, to determine the
correct linker arguments. This does not happen when building entirely
within yocto, as pseudo will intercept and rewrite the file path when
trying to test for /usr/include/yaml.h to match the sysroot and thus
generate consistent behavior.

This commit adds the PKG_CONFIG_SYSROOT_DIR prefix to the file path
in order to test against the same conditions that are used to resolve
the build flags for libyaml.

In linux commit ef8795f3f1c ("dt-bindings: kbuild: Use DTB files for
validation"), including yaml is disabled again anyway because of other
problems that it causes, so this problem can also be addressed by
partially backporting that commit instead and simply disabling the yaml
support.

Fixes: 0535e46d55d7 ("scripts/dtc: Update to upstream version v1.7.2-35-g52f07dcca47c")
Signed-off-by: Greg Malysa

Merge patch series "a few test.py improvements"

2026-01-12T21:12:47+00:00

David Lechner  says:

While trying to run the test suite for the first time, I encountered a
few minor issues. Here are a few patches to address them.

Link: https://lore.kernel.org/r/20260105-a-few-test-py-improvements-v3-0-fea38243ca5b@baylibre.com

pylibfdt: add requirements.txt for setuptools

2026-01-12T21:12:41+00:00

Add a requirements.txt file to the pylibfdt script directory to specify
setuptools as a dependency. This follows the pattern of each tool in
U-Boot having its own requirements.txt file. The version is set to
78.1.1 to avoid conflict with the same in tools/patman/requirements.txt.

Reviewed-by: Simon Glass 
Tested-by: Mattijs Korpershoek  # sandbox
Reviewed-by: Mattijs Korpershoek 
Signed-off-by: David Lechner

scripts/dtc: Update to upstream version v1.7.2-35-g52f07dcca47c

2026-01-05T15:01:59+00:00

Synchronize local copy of DTC with Linux 6.17 . This includes the
following picked and squashed commits from Linux kernel. The squash
was necessary, since the DTC here contains changes which were also
part of DTC in Linux alraedy, and the squash helped resolve those
without going back and forth with the changes.

The following commits from Linux are picked:

8f324cd712df7 # scripts/dtc: consolidate include path options in Makefile
b5b3d9b63b0ee # scripts/dtc: Add yamltree.c to dtc sources
7d97a76f226d6 # scripts/dtc: Update to upstream version v1.4.7-14-gc86da84d30e4
ea6f243be74e5 # scripts/dtc: Update to upstream version v1.4.7-57-gf267e674d145
02d435d4eccd8 # scripts/dtc: Update to upstream version v1.5.0-23-g87963ee20693
6e321b7637396 # scripts/dtc: Update to upstream version v1.5.0-30-g702c1b6c0e73
9f19ec91a7a35 # scripts/dtc: dtx_diff - add color output support
8287d642f38d1 # scripts/dtc: Update to upstream version v1.5.1-22-gc40aeb60b47a
4c52deef9225d # scripts/dtc: Revert "yamltree: Ensure consistent bracketing of properties with phandles"
5d3827e1452ed # scripts/dtc: Remove unused makefile fragments
40dd266887654 # scripts/dtc: Update to upstream version v1.6.0-2-g87a656ae5ff9
8d4cf6b6acb59 # scripts/dtc: use pkg-config to include  in non-standard path
b9bf9ace5ae90 # scripts/dtc: Update to upstream version v1.6.0-11-g9d7888cbf19c
69a883b6f5ac0 # scripts/dtc: dtx_diff - make help text formatting consistent
8f829108b8aed # scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting
b39b4342ac495 # scripts/dtc: Update to upstream version v1.6.0-31-gcbca977ea121
93c6424c486b3 # scripts: dtc: Fetch fdtoverlay.c from external DTC project
0dd574a1d75c3 # scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9
ec38b5df8a231 # scripts: dtc: Build fdtoverlay tool
a0c8c431411f5 # scripts: dtc: Remove the unused fdtdump.c file
e7dc653d4e890 # scripts/dtc: Add missing fdtoverlay to gitignore
d2bf5d2e3f09c # scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8
a60878f5532d0 # scripts/dtc: dtx_diff: remove broken example from help text
8b739d8658a9b # scripts/dtc: Call pkg-config POSIXly correct
b6eeafa67df00 # scripts/dtc: Update to upstream version v1.6.1-63-g55778a03df61
f96cc4c787588 # scripts/dtc: Update to upstream version v1.6.1-66-gabbd523bae6e
09ab9c092ef2b # scripts/dtc: Update to upstream version v1.7.0-93-g1df7b047fe43
ded8a5a498f2d # scripts/dtc: Update to upstream version v1.7.0-95-gbcd02b523429
ee6ff6fca7e71 # scripts/dtc: Update to upstream version v1.7.2-35-g52f07dcca47c

This also includes forward port of U-Boot commit
e8c2d25845c7 ("libfdt: Revert 6dcb8ba4 from upstream libfdt")
to avoid binary size growth.

Signed-off-by: Marek Vasut

kbuild: Bump the build system to 6.1

2026-01-02T16:28:14+00:00

Our last sync with the kernel was 5.1.

We are so out of sync now, that tracking the patches and backporting
them one by one makes little sense and it's going to take ages.

This is an attempt to sync up Makefiles to 6.1.
Unfortunately due to sheer amount of patches this is not easy to review,
but that's what we decided during a community call for the bump to 5.1,
so we are following the same guidelines here.

Signed-off-by: Sughosh Ganu 
Signed-off-by: Ilias Apalodimas a #rebased on -next

pylibfdt: setup.py: Drop license_files

2025-08-07T17:16:12+00:00

On more recent versions of setuptools the warning about not being able
to find the files specified in license_files has re-appeared. This is
because as best I can tell, it can't and won't look in $(srctree) but
rather only subdirectories of scripts/dtc/pylibfdt. Since we already
provide both SPDX tags and a license field with the SPDX contents, let
us just drop license_files as it's not mandatory.

Signed-off-by: Tom Rini

pylibfdt: correct license information (further)

2025-06-26T18:10:58+00:00

Since commit 51ec8db23280 ("pylibfdt: correct license information"), the
License classifiers are gone so I assume setuptools now extract the
license from the license argument to setuptools.setup() function.

It's always been incorrect as far as I could tell, so let's fix this
with the appropriate info from the SPDX License identifier at the top of
the file. It was missing GPL-2.0-or-later and we disambiguate by using
BSD-2-Clause instead of simply BSD.

Fixes: 6b08fb5cc44f ("fdt: Move to setuptools")
Signed-off-by: Quentin Schulz

pylibfdt: correct license information

2025-06-09T20:07:21+00:00

Setuptools 78.1.1 shows warnings:

* Pattern 'GPL' did not match any files.
* Pattern 'BSD-2-Clause' did not match any files.
* SetuptoolsDeprecationWarning: License classifiers are deprecated.

Cf. https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license

Signed-off-by: Heinrich Schuchardt 
Reviewed-by: Bryan Brattlof 
Reviewed-by: Tom Rini

dtc: introduce label relative path references

2025-04-10T17:58:08+00:00

Since introduction of OF_UPSTREAM flag, U-Boot's dtc must be able
to compile Kernel's device tree.

Since kernel commit 7de129f5389b ("ARM: dts: stm32: stm32mp151a-prtt1l:
Fix QSPI configuration"), label relative path references has been
introduced. These label relative path references is not supported
by current U-Boot dtc version 1.5.0: (see mailing list discussion [1]).

In order to support such label relative patch references
adds following commit from upstream DTC tree:

commit 651410e54cb9 ("util: introduce xstrndup helper")
commit ec7986e682cf ("dtc: introduce label relative path references")

[1] https://lore.kernel.org/all/20250115144428.GZ3476@bill-the-cat/T/

Signed-off-by: Patrice Chotard 
Cc: Tom Rini 
Cc: Simon Glass 
Reviewed-by: Tom Rini 
Reviewed-by: Simon Glass

scripts/dtc/pylibfdt/libfdt.i_shipped: Use SWIG_AppendOutput

2024-10-30T19:02:53+00:00

Swig has changed language specific AppendOutput functions. The helper
macro SWIG_AppendOutput remains unchanged. Use that instead
of SWIG_Python_AppendOutput, which would require an extra parameter
since swig 4.3.0.

/home/flk/poky/build-test/tmp/work/qemux86_64-poky-linux/u-boot/2024.10/git/arch/x86/cpu/u-boot-64.lds
| scripts/dtc/pylibfdt/libfdt_wrap.c: In function ‘_wrap_fdt_next_node’:
| scripts/dtc/pylibfdt/libfdt_wrap.c:5581:17: error: too few arguments to function ‘SWIG_Python_AppendOutput’
|  5581 |     resultobj = SWIG_Python_AppendOutput(resultobj, val);
|       |                 ^~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Markus Volk 
Reported-by: Rudi Heitbaum 
Link: https://github.com/dgibson/dtc/pull/154