This patch adds a linux,cma-heap property for CMA reserved memory regions, which will be used to allow the region to be exposed via the DMA-BUF Heaps interface Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx> Cc: "Andrew F. Davis" <afd@xxxxxx> Cc: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx> Cc: Liam Mark <lmark@xxxxxxxxxxxxxx> Cc: Pratik Patel <pratikp@xxxxxxxxxxxxxx> Cc: Laura Abbott <labbott@xxxxxxxxxx> Cc: Brian Starkey <Brian.Starkey@xxxxxxx> Cc: Chenbo Feng <fengc@xxxxxxxxxx> Cc: Alistair Strachan <astrachan@xxxxxxxxxx> Cc: Sandeep Patil <sspatil@xxxxxxxxxx> Cc: Hridya Valsaraju <hridya@xxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> Cc: Robin Murphy <robin.murphy@xxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: devicetree@xxxxxxxxxxxxxxx Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- .../devicetree/bindings/reserved-memory/reserved-memory.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt b/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt index bac4afa3b197..e97b6a4c3bc0 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,cma-heap" property is present, then Linux will expose the + the CMA region via the DMA-BUF Heaps interface. + - If a "linux,dma-default" property is present, then Linux will use the region for the default pool of the consistent DMA allocator. -- 2.17.1
