[RFC][PATCH 4/4] example: dts: hi3660-hikey960: Add dts entries to test cma heap binding

[John Stultz]

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@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>
---
 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 {
-- 
2.17.1