Adds example test entry to create and expose a dummy "camera" cma region via the dmabuf heaps interface
This isn't a patch I'm submitting to merge, but just an example of how this functionality can be used, which I've used for testing.
Cc: Rob Herring robh+dt@kernel.org Cc: Sumit Semwal sumit.semwal@linaro.org Cc: "Andrew F. Davis" afd@ti.com Cc: Benjamin Gaignard benjamin.gaignard@linaro.org Cc: Liam Mark lmark@codeaurora.org Cc: Pratik Patel pratikp@codeaurora.org Cc: Laura Abbott labbott@redhat.com Cc: Brian Starkey Brian.Starkey@arm.com Cc: Chenbo Feng fengc@google.com Cc: Alistair Strachan astrachan@google.com Cc: Sandeep Patil sspatil@google.com Cc: Hridya Valsaraju hridya@google.com Cc: Christoph Hellwig hch@lst.de Cc: Marek Szyprowski m.szyprowski@samsung.com Cc: Robin Murphy robin.murphy@arm.com Cc: Andrew Morton akpm@linux-foundation.org Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-mm@kvack.org Signed-off-by: John Stultz john.stultz@linaro.org --- arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts index c0a6aad9593f..5eef1a76d51a 100644 --- a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts +++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts @@ -81,6 +81,13 @@ reusable; linux,cma-default; }; + + cma_camera: cma-camera { + compatible = "shared-dma-pool"; + reg = <0x0 0x24C00000 0x0 0x4000000>; + reusable; + linux,cma-heap; + }; };
reboot-mode-syscon@32100000 {