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From: John Stultz <john.stultz@linaro.org>
To: lkml <linux-kernel@vger.kernel.org>
Cc: John Stultz <john.stultz@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Laura Abbott <labbott@redhat.com>,
	Benjamin Gaignard <benjamin.gaignard@linaro.org>,
	Sumit Semwal <sumit.semwal@linaro.org>,
	Liam Mark <lmark@codeaurora.org>,
	Pratik Patel <pratikp@codeaurora.org>,
	Brian Starkey <Brian.Starkey@arm.com>,
	"Andrew F . Davis" <afd@ti.com>, Chenbo Feng <fengc@google.com>,
	Alistair Strachan <astrachan@google.com>,
	Sandeep Patil <sspatil@google.com>,
	Hridya Valsaraju <hridya@google.com>,
	devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [RFC][PATCH 3/3] example: dts: hi3660-hikey960: Add dts entries to test cma heap binding
Date: Fri, 25 Oct 2019 22:50:09 +0000	[thread overview]
Message-ID: <20191025225009.50305-4-john.stultz@linaro.org> (raw)
In-Reply-To: <20191025225009.50305-1-john.stultz@linaro.org>

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@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Andrew F. Davis <afd@ti.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: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
 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


      parent reply	other threads:[~2019-10-25 22:50 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-25 22:50 [RFC][PATCH 0/3] Support non-default CMA regions to the dmabuf heaps interface John Stultz
2019-10-25 22:50 ` [RFC][PATCH 1/3] dt-bindings: dma-buf: heaps: Describe CMA regions to be added to " John Stultz
2019-10-25 23:32   ` Rob Herring
2019-10-25 23:55     ` John Stultz
2019-10-30 13:29       ` Rob Herring
2019-10-25 22:50 ` [RFC][PATCH 2/3] dma-buf: heaps: Allow adding specified non-default CMA heaps John Stultz
2019-10-25 22:50 ` John Stultz [this message]

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