Commit 5f40bb39 authored by Heinrich Schuchardt's avatar Heinrich Schuchardt Committed by Rob Herring
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of: properties of reserved-memory nodes 



The reusable and the no-map property are mutually exclusive.
Clarify this in the documentation.

Acked-by: default avatarGrant Likely <grant.likely@arm.com>
Signed-off-by: default avatarHeinrich Schuchardt <xypron.glpk@gmx.de>
Link: https://lore.kernel.org/r/20200910162020.3927-1-xypron.glpk@gmx.de


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 73d3e43f

Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt

+3 −0
Original line number Diff line number Diff line
@@ -64,6 +64,9 @@ reusable (optional) - empty property 
      system can use that region to store volatile or cached data that

      can be otherwise regenerated or migrated elsewhere.



A node must not carry both the no-map and the reusable property as these are

logically contradictory.



Linux implementation note:

- If a "linux,cma-default" property is present, then Linux will use the

  region for the default pool of the contiguous memory allocator.