In order to apply overlays or create new nodes under the root node, the
kernel expects of_root to be set. On some system were a device-tree us
not provided by firmware (x86 for instance) if CONFIG_OF is enabled,
then we will end up with a null of_root. This series add support to
create this root node using a builtin dtb and remove the manual
creation of the root node done in unittests.c.

Clément Léger (2):
  of: base: populate of_root node if not set
  of: unittest: remove check for of_root

 drivers/of/Makefile       |  2 +-
 drivers/of/base.c         | 18 ++++++++++++++++--
 drivers/of/empty_root.dts |  6 ++++++
 drivers/of/unittest.c     | 10 ----------
 4 files changed, 23 insertions(+), 13 deletions(-)
 create mode 100644 drivers/of/empty_root.dts

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2.36.1