From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH v10 5/8] dmaengine: edma: Add TI EDMA device tree binding Date: Mon, 17 Jun 2013 13:12:32 +0200 Message-ID: <3940138.jZFEtfGGLz@wuerfel> References: <1371263570-9323-1-git-send-email-joelagnel@ti.com> <1371263570-9323-5-git-send-email-joelagnel@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Linux DaVinci Kernel List , Russell King , Linux Documentation List , Linux MMC List , Devicetree Discuss , Mark Brown , Sekhar Nori , Koen Kooi , Rob Herring , Linux Kernel Mailing List , Vinod Koul , Linux SPI Devel List , Andrew Morton , Linux OMAP List , Linux ARM Kernel List To: Joel A Fernandes Return-path: In-Reply-To: <1371263570-9323-5-git-send-email-joelagnel-l0cyMroinI0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: "devicetree-discuss" List-Id: linux-spi.vger.kernel.org On Friday 14 June 2013 21:32:47 Joel A Fernandes wrote: > > diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt > new file mode 100644 > index 0000000..ada0018 > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt > @@ -0,0 +1,26 @@ > +TI EDMA > + > +Required properties: > +- compatible : "ti,edma3" > +- ti,hwmods: Name of the hwmods associated to the EDMA > +- ti,edma-regions: Number of regions > +- ti,edma-slots: Number of slots > + > +Optional properties: > +- ti,edma-xbar-event-map: Crossbar event to channel map You need to list #dma-cells as required here, and which values are accepted by the driver (I suppose only <1>). You should also explain the format of the dma-specifier for a slave here for each possible value of #dma-cells. For each of the standard properties (reg, interrupts, dma-channels), list whether they are optional or required. Since the example has three interrupts, you should probably list how many interrupts need to be specified (minimum and maximum if the number is variable) and in what order to expect them. Arnd