Adds example test entry to create and expose a 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: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Laura Abbott <labbott@xxxxxxxxxx>
Cc: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Liam Mark <lmark@xxxxxxxxxxxxxx>
Cc: Pratik Patel <pratikp@xxxxxxxxxxxxxx>
Cc: Brian Starkey <Brian.Starkey@xxxxxxx>
Cc: Andrew F. Davis <afd@xxxxxx>
Cc: Chenbo Feng <fengc@xxxxxxxxxx>
Cc: Alistair Strachan <astrachan@xxxxxxxxxx>
Cc: Sandeep Patil <sspatil@xxxxxxxxxx>
Cc: Hridya Valsaraju <hridya@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
index 190ac29b9e2f..783c5b2abd2d 100644
--- a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
@@ -75,12 +75,23 @@
};
/* global autoconfigured region for contiguous allocations */
- linux,cma {
+ cma_default: linux,cma {
compatible = "shared-dma-pool";
reg = <0x0 0x20C00000 0x0 0x4000000>;
reusable;
linux,cma-default;
};
+
+ cma_camera: cma-camera {
+ compatible = "shared-dma-pool";
+ reg = <0x0 0x24C00000 0x0 0x4000000>;
+ reusable;
+ };
+ };
+
+ cma_heap {
+ compatible = "dmabuf-heap-cma";
+ memory-region = <&cma_camera>;
};
reboot-mode-syscon@32100000 {
--
2.17.1
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