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-rw-r--r--Documentation/devicetree/bindings/barebox/barebox,state.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/barebox/barebox,state.rst b/Documentation/devicetree/bindings/barebox/barebox,state.rst
index 872bac061b..2893937820 100644
--- a/Documentation/devicetree/bindings/barebox/barebox,state.rst
+++ b/Documentation/devicetree/bindings/barebox/barebox,state.rst
@@ -55,6 +55,9 @@ Optional Properties
* ``algo``: A HMAC algorithm used to detect manipulation of the data
or header, sensible values follow this pattern ``hmac(<HASH>)``,
e.g. ``hmac(sha256)``. Only available for the ``backend-type`` ``raw``.
+* ``keep-previous-content``: Check if a the bucket meta magic field contains
+ other data than the magic value. If so, the backend will not write the state
+ to prevent unconditionally overwrites of existing data.
.. note:: For the ``backend-storage-type`` the keyword ``noncircular`` is still
supported as a fall back to an old storage format. Recommendation is to not