From patchwork Thu Sep 20 14:43:44 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Porter X-Patchwork-Id: 1486171 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 328EDDF2D2 for ; Thu, 20 Sep 2012 14:48:03 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TEi0T-00073F-9U; Thu, 20 Sep 2012 14:45:34 +0000 Received: from mail-iy0-f177.google.com ([209.85.210.177]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TEhxf-0005Z8-4y for linux-arm-kernel@lists.infradead.org; Thu, 20 Sep 2012 14:42:41 +0000 Received: by mail-iy0-f177.google.com with SMTP id i1so1886382iaa.36 for ; Thu, 20 Sep 2012 07:42:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; bh=Mygm+Wq1mjDnPqtdjqqPCDeAmvlp/SI446tYqdey1gw=; b=aDKJndbHKQeafyTZ9gzk3wbGbhgF/Sm/LspSOWNvzal7N4f4bx2c5HdGmKh9a15Eex /5Rp2vZOtvd3TOhf9YVWPuISFV6DFy5jq10x1z9g/9EIYqiSyRwjrnsazZ3f1mQdgD6n 6RQhoWJPA/Ky11NqXQyIrArsGm1M+K72UjN6CH/dWnJnWNnm34ZUaA0CuPNwo//6U1F2 XIdoIyknqM5lbU8EhuSSChXIPH/hjpvIiJHAAmlYrJmj3H0WzGq893kv4Qew2+fDABzr uAsFrruDD+37K8kJLFI9YGXXoB5IDRwdTZNQLn9/2yAM9YLMeEPpdT+YzeWlZQVO9LSS W/MQ== Received: by 10.50.202.8 with SMTP id ke8mr1925144igc.6.1348152158696; Thu, 20 Sep 2012 07:42:38 -0700 (PDT) Received: from beef.ohporter.com (cpe-24-166-64-7.neo.res.rr.com. [24.166.64.7]) by mx.google.com with ESMTPS id p5sm15288242igm.13.2012.09.20.07.42.36 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 20 Sep 2012 07:42:37 -0700 (PDT) From: Matt Porter To: Tony Lindgren , Sekhar Nori , Grant Likely , Mark Brown , Benoit Cousson , Russell King , Vinod Koul , Rob Landley , Chris Ball Subject: [RFC PATCH 11/13] spi: omap2-mcspi: add generic DMA request support to the DT binding Date: Thu, 20 Sep 2012 10:43:44 -0400 Message-Id: <1348152226-13588-12-git-send-email-mporter@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1348152226-13588-1-git-send-email-mporter@ti.com> References: <1348152226-13588-1-git-send-email-mporter@ti.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.210.177 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (ohiomdp[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Cc: Linux DaVinci Kernel List , Arnd Bergmann , Linux Documentation List , Devicetree Discuss , Linux MMC List , Linux Kernel Mailing List , Rob Herring , Dan Williams , Linux SPI Devel List , Linux OMAP List , Linux ARM Kernel List X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The binding definition is based on the generic DMA request binding. Signed-off-by: Matt Porter --- 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 81df374..11aff04 100644 --- a/Documentation/devicetree/bindings/spi/omap-spi.txt +++ b/Documentation/devicetree/bindings/spi/omap-spi.txt @@ -7,8 +7,18 @@ Required properties: - ti,spi-num-cs : Number of chipselect supported by the instance. - ti,hwmods: Name of the hwmod associated to the McSPI +Optional properties: +- dmas: List of DMA controller phandle and DMA request ordered + pairs. One tx and one rx pair is required for each chip + select. +- dma-names: List of DMA request names. These strings correspond + 1:1 with the ordered pairs in dmas. The string naming is + to be "rxN" and "txN" for RX and TX requests, + respectively, where N equals the chip select number. -Example: +Examples: + +[hwmod populated DMA resources] mcspi1: mcspi@1 { #address-cells = <1>; @@ -18,3 +28,18 @@ 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"; +}; +