From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Kocialkowski Subject: [PATCH 6/9] sunxi-cedrus: Add device tree binding document Date: Fri, 9 Mar 2018 11:14:42 +0100 Message-ID: <20180309101445.16190-4-paul.kocialkowski@bootlin.com> References: <20180309100933.15922-3-paul.kocialkowski@bootlin.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180309100933.15922-3-paul.kocialkowski@bootlin.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Cc: "Signed-off-by : Bob Ham" , Thomas Petazzoni , Alexandre Courbot , Maxime Ripard , Chen-Yu Tsai , Florent Revest , Hans Verkuil , Icenowy Zheng , Sakari Ailus , Thomas van Kleef , Laurent Pinchart List-Id: devicetree@vger.kernel.org From: Florent Revest Device Tree bindings for the Allwinner's video engine Signed-off-by: Florent Revest --- .../devicetree/bindings/media/sunxi-cedrus.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/sunxi-cedrus.txt diff --git a/Documentation/devicetree/bindings/media/sunxi-cedrus.txt b/Documentation/devicetree/bindings/media/sunxi-cedrus.txt new file mode 100644 index 000000000000..138581113c49 --- /dev/null +++ b/Documentation/devicetree/bindings/media/sunxi-cedrus.txt @@ -0,0 +1,44 @@ +Device-Tree bindings for SUNXI video engine found in sunXi SoC family + +Required properties: +- compatible : "allwinner,sun4i-a10-video-engine"; +- memory-region : DMA pool for buffers allocation; +- clocks : list of clock specifiers, corresponding to + entries in clock-names property; +- clock-names : should contain "ahb", "mod" and "ram" entries; +- resets : phandle for reset; +- interrupts : should contain VE interrupt number; +- reg : should contain register base and length of VE. + +Example: + +reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + ve_reserved: cma { + compatible = "shared-dma-pool"; + reg = <0x43d00000 0x9000000>; + no-map; + linux,cma-default; + }; +}; + +video-engine { + compatible = "allwinner,sun4i-a10-video-engine"; + memory-region = <&ve_reserved>; + + clocks = <&ahb_gates 32>, <&ccu CLK_VE>, + <&dram_gates 0>; + clock-names = "ahb", "mod", "ram"; + + assigned-clocks = <&ccu CLK_VE>; + assigned-clock-rates = <320000000>; + + resets = <&ccu RST_VE>; + + interrupts = <53>; + + reg = <0x01c0e000 4096>; +}; -- 2.16.2