variables: Add documentation for KERNEL_DTC_FLAGS

Add documentation for the newly introduced KERNEL_DTC_FLAGS variable.

(From yocto-docs rev: b2d5bf48fe4e76446a38762839865176294a4a3c)

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index c8e28fd321..4ce2648136 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -3884,6 +3884,15 @@ system and gives an overview of their function and contents.
 
          KERNEL_ARTIFACT_NAME ?= "${PKGE}-${PKGV}-${PKGR}-${MACHINE}${IMAGE_VERSION_SUFFIX}"
 
+   :term:`KERNEL_DTC_FLAGS`
+      Specifies the ``dtc`` flags that are passed to the Linux kernel build
+      system when generating the device trees (via ``DTC_FLAGS`` environment
+      variable).
+
+      In order to use this variable, the
+      :ref:`kernel-devicetree <ref-classes-kernel-devicetree>` class must
+      be inherited.
+
    :term:`KERNEL_EXTRA_ARGS`
       Specifies additional ``make`` command-line arguments the OpenEmbedded
       build system passes on when compiling the kernel.