This binding specifies which CMA regions should be added to the dmabuf heaps interface.
Cc: Rob Herring <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Laura Abbott <[email protected]> Cc: Benjamin Gaignard <[email protected]> Cc: Sumit Semwal <[email protected]> Cc: Liam Mark <[email protected]> Cc: Pratik Patel <[email protected]> Cc: Brian Starkey <[email protected]> Cc: Andrew F. Davis <[email protected]> Cc: Chenbo Feng <[email protected]> Cc: Alistair Strachan <[email protected]> Cc: Sandeep Patil <[email protected]> Cc: Hridya Valsaraju <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: John Stultz <[email protected]> --- .../bindings/dma/dmabuf-heap-cma.txt | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt diff --git a/Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt b/Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt new file mode 100644 index 000000000000..bde7b1f1c269 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt @@ -0,0 +1,31 @@ +* DMA-BUF CMA Heap + +Specifies a CMA region that should be added to the dma-buf heaps +interface. + +Required properties: +- compatible: Must be "dmabuf-heap-cma" +- memory-region: phandle to a CMA reserved memory node + +Example: +This example has a camera CMA node in reserved memory, which is then +referenced by the dmabuf-heap-cma node. + + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + ... + cma_camera: cma-camera { + compatible = "shared-dma-pool"; + reg = <0x0 0x24C00000 0x0 0x4000000>; + reusable; + }; + ... + }; + + cma_heap { + compatible = "dmabuf-heap-cma"; + memory-region = <&cma_camera>; + }; -- 2.17.1 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
