[v4,17/19] ARM: dts: sun5i: Add Video Engine and reserved memory nodes

Commit Message

Paul Kocialkowski June 18, 2018, 2:58 p.m. UTC

This adds nodes for the Video Engine and the associated reserved memory
for sun5i-based platforms. Up to 96 MiB of memory are dedicated to the
CMA pool.

The VPU can only map the first 256 MiB of DRAM, so the reserved memory
pool has to be located in that area. Following Allwinner's decision in
downstream software, the last 96 MiB of the first 256 MiB of RAM are
reserved for this purpose.

Signed-off-by: Paul Kocialkowski <[e-mail]>

Patch

diff --git a/arch/arm/boot/dts/sun5i.dtsi b/arch/arm/boot/dts/sun5i.dtsi
index 6fa9e28edc59..3138f791b6b2 100644
--- a/arch/arm/boot/dts/sun5i.dtsi
+++ b/arch/arm/boot/dts/sun5i.dtsi
@@ -108,6 +108,21 @@ 
 		};
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		/* Address must be kept in the lower 256 MiBs of DRAM for VE. */
+		cma_pool: cma@4a000000 {
+			compatible = "shared-dma-pool";
+			size = <0x6000000>;
+			alloc-ranges = <0x4a000000 0x6000000>;
+			reusable;
+			linux,cma-default;
+		};
+	};
+
 	soc@1c00000 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -292,6 +307,19 @@ 
 			};
 		};
 
+		vpu: video-codec@1c0e000 {
+			compatible = "allwinner,sun5i-a13-video-engine";
+			reg = <0x01c0e000 0x1000>;
+
+			clocks = <&ccu CLK_AHB_VE>, <&ccu CLK_VE>,
+				 <&ccu CLK_DRAM_VE>;
+			clock-names = "ahb", "mod", "ram";
+
+			resets = <&ccu RST_VE>;
+			interrupts = <53>;
+			allwinner,sram = <&ve_sram 1>;
+		};
+
 		mmc0: mmc@1c0f000 {
 			compatible = "allwinner,sun5i-a13-mmc";
 			reg = <0x01c0f000 0x1000>;