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authorVladimir Murzin <vladimir.murzin@arm.com>2017-06-26 12:18:58 +0300
committerChristoph Hellwig <hch@lst.de>2017-06-28 16:55:03 +0300
commit93228b44c33a572cb36cec2dbed42e9bdbc88d79 (patch)
tree769e00d52f124ad784d45f39dbbdf4bbdcc1347e /Documentation/devicetree/bindings/reserved-memory
parentc41f9ea998f3ba61f38fa350eef28ec6caf0a07d (diff)
downloadlinux-93228b44c33a572cb36cec2dbed42e9bdbc88d79.tar.xz
drivers: dma-coherent: Introduce default DMA pool
This patch introduces default coherent DMA pool similar to default CMA area concept. To keep other users safe code kept under CONFIG_ARM. Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Tested-by: Andras Szemzo <sza@esh.hu> Tested-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'Documentation/devicetree/bindings/reserved-memory')
-rw-r--r--Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt b/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
index 3da0ebdba8d9..16291f2a4688 100644
--- a/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
+++ b/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
@@ -68,6 +68,9 @@ 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.
+- If a "linux,dma-default" property is present, then Linux will use the
+ region for the default pool of the consistent DMA allocator.
+
Device node references to reserved memory
-----------------------------------------
Regions in the /reserved-memory node may be referenced by other device