From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joel A Fernandes Subject: [PATCH v10 6/8] spi: omap2-mcspi: add generic DMA request support to the DT binding Date: Fri, 14 Jun 2013 21:32:48 -0500 Message-ID: <1371263570-9323-6-git-send-email-joelagnel@ti.com> References: <1371263570-9323-1-git-send-email-joelagnel@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Joel A Fernandes , Linux DaVinci Kernel List , Arnd Bergmann , Linux Documentation List , Devicetree Discuss , Linux MMC List , Linux Kernel Mailing List , Linux SPI Devel List , Linux OMAP List , Linux ARM Kernel List To: Tony Lindgren , Sekhar Nori , Matt Porter , Grant Likely , Rob Herring , Vinod Koul , Mark Brown , Benoit Cousson , Russell King , Rob Landley , Andrew Morton , Jason Kridner , Koen Kooi Return-path: In-Reply-To: <1371263570-9323-1-git-send-email-joelagnel-l0cyMroinI0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-spi.vger.kernel.org From: Matt Porter The binding definition is based on the generic DMA request binding Signed-off-by: Matt Porter Signed-off-by: Joel A Fernandes --- Documentation/devicetree/bindings/spi/omap-spi.txt | 27 +++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/spi/omap-spi.txt b/Documentation/devicetree/bindings/spi/omap-spi.txt index 938809c..4c85c4c 100644 --- a/Documentation/devicetree/bindings/spi/omap-spi.txt +++ b/Documentation/devicetree/bindings/spi/omap-spi.txt @@ -10,7 +10,18 @@ Required properties: input. The default is D0 as input and D1 as output. -Example: +Optional properties: +- dmas: List of DMA specifiers with the controller specific format + as described in the generic DMA client binding. A tx and rx + specifier is required for each chip select. +- dma-names: List of DMA request names. These strings correspond + 1:1 with the DMA specifiers listed in dmas. The string naming + is to be "rxN" and "txN" for RX and TX requests, + respectively, where N equals the chip select number. + +Examples: + +[hwmod populated DMA resources] mcspi1: mcspi@1 { #address-cells = <1>; @@ -20,3 +31,17 @@ mcspi1: mcspi@1 { ti,spi-num-cs = <4>; }; +[generic DMA request binding] + +mcspi1: mcspi@1 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "ti,omap4-mcspi"; + ti,hwmods = "mcspi1"; + ti,spi-num-cs = <2>; + dmas = <&edma 42 + &edma 43 + &edma 44 + &edma 45>; + dma-names = "tx0", "rx0", "tx1", "rx1"; +}; -- 1.7.9.5 ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev