linux-kernel - [PATCH v3 12/14] ARM: dts: sun5i: Add Video Engine and reserved memory nodes

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Message-Id: <20180507124500.20434-13-paul.kocialkowski@bootlin.com>
Date:   Mon,  7 May 2018 14:44:58 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.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>,
        "David S . Miller" <davem@...emloft.net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Arnd Bergmann <arnd@...db.de>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>,
        Yannick Fertre <yannick.fertre@...com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Hugues Fruchet <hugues.fruchet@...com>,
        Alexandre Courbot <gnurou@...il.com>,
        Florent Revest <florent.revest@...e-electrons.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
        Smitha T Murthy <smitha.t@...sung.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Randy Li <ayaka@...lik.info>
Subject: [PATCH v3 12/14] ARM: dts: sun5i: Add Video Engine and reserved memory nodes

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 <paul.kocialkowski@...tlin.com>
---
 arch/arm/boot/dts/sun5i.dtsi | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/boot/dts/sun5i.dtsi b/arch/arm/boot/dts/sun5i.dtsi
index 6fa9e28edc59..306d265622e2 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@...00000 {
+			compatible = "shared-dma-pool";
+			size = <0x6000000>;
+			alloc-ranges = <0x4a000000 0x6000000>;
+			reusable;
+			linux,cma-default;
+		};
+	};
+
 	soc@...0000 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -292,6 +307,22 @@
 			};
 		};
 
+		vpu: video-codec@...e000 {
+			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";
+
+			assigned-clocks = <&ccu CLK_VE>;
+			assigned-clock-rates = <320000000>;
+
+			resets = <&ccu RST_VE>;
+			interrupts = <53>;
+			allwinner,sram = <&ve_sram 1>;
+		};
+
 		mmc0: mmc@...f000 {
 			compatible = "allwinner,sun5i-a13-mmc";
 			reg = <0x01c0f000 0x1000>;
-- 
2.16.3