linux-kernel - [PATCH 14/15] arm64: dts: allwinner: h5: Add Video Engine and reserved memory node

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Date:   Thu, 15 Nov 2018 15:50:12 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devel@...verdev.osuosl.org
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-sunxi@...glegroups.com, Hans Verkuil <hverkuil@...all.nl>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH 14/15] arm64: dts: allwinner: h5: Add Video Engine and reserved memory node

This adds nodes for the Video Engine and the associated reserved memory
for the H5. Up to 96 MiB of memory are dedicated to the CMA pool.

The pool is located at the end of the first 256 MiB of RAM so that the
VPU can access it. It is unclear whether this is still a hard
requirement for this platform, but it seems safer that way.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi | 25 ++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
index 4f0e2df875ba..6cc9698cab49 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
@@ -93,6 +93,20 @@
 				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		cma_pool: cma@...00000 {
+			compatible = "shared-dma-pool";
+			size = <0x6000000>;
+			alloc-ranges = <0x4a000000 0x6000000>;
+			reusable;
+			linux,cma-default;
+		};
+	};
+
 	soc {
 		syscon: system-control@...0000 {
 			compatible = "allwinner,sun50i-h5-system-control";
@@ -116,6 +130,17 @@
 			};
 		};
 
+		video-codec@...e000 {
+			compatible = "allwinner,sun50i-h5-video-engine";
+			reg = <0x01c0e000 0x1000>;
+			clocks = <&ccu CLK_BUS_VE>, <&ccu CLK_VE>,
+				 <&ccu CLK_DRAM_VE>;
+			clock-names = "ahb", "mod", "ram";
+			resets = <&ccu RST_BUS_VE>;
+			interrupts = <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>;
+			allwinner,sram = <&ve_sram 1>;
+		};
+
 		mali: gpu@...0000 {
 			compatible = "allwinner,sun50i-h5-mali", "arm,mali-450";
 			reg = <0x01e80000 0x30000>;
-- 
2.19.1