From patchwork Thu Oct 11 19:04:40 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Porter X-Patchwork-Id: 1583141 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 20152E00DC for ; Thu, 11 Oct 2012 19:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964944Ab2JKTE3 (ORCPT ); Thu, 11 Oct 2012 15:04:29 -0400 Received: from mail-ia0-f174.google.com ([209.85.210.174]:42988 "EHLO mail-ia0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964833Ab2JKTEZ (ORCPT ); Thu, 11 Oct 2012 15:04:25 -0400 Received: by mail-ia0-f174.google.com with SMTP id y32so1489106iag.19 for ; Thu, 11 Oct 2012 12:04:24 -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=jyRBipu8jvcmxUXup3P7M04JiDIXBlLQyfnDKif43oU7jj8CpfQsl6Q2O1jXrrqVUB LH7FzfKIlTz/ABjgpXMVg9TePOGKwTyR18izVoatohbF3l1DvA+RGwctQz9PVfhTBsfh hBYDQ0UL3Nn53kSPwpHQRWL4KtUqAzMBpgBFewHVZP5DetdH5wNEmDxaOhgz8WofkD/r /mzZ3YW9kaoRkZx4BpfWMCKkc/cJoX4A8pyGkfV1BjYMaLX9qMJqoFNiiQKpBXJx1TED m1cv7OPuTgRgaVvXWLDMCHc6FUlrnNPkuR8oSbkQWrtVKDA7Ew/iN5T0l3ncuGLU3JIp JXAg== Received: by 10.50.219.233 with SMTP id pr9mr2757igc.19.1349982264635; Thu, 11 Oct 2012 12:04:24 -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 us4sm7461igc.9.2012.10.11.12.04.22 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 11 Oct 2012 12:04:23 -0700 (PDT) From: Matt Porter To: Tony Lindgren , Sekhar Nori , Grant Likely , Mark Brown , Benoit Cousson , Russell King , Vinod Koul , Rob Landley , Chris Ball Cc: Devicetree Discuss , Linux OMAP List , Linux ARM Kernel List , Linux DaVinci Kernel List , Linux Kernel Mailing List , Linux Documentation List , Linux MMC List , Linux SPI Devel List , Arnd Bergmann , Dan Williams , Rob Herring Subject: [RFC PATCH v2 15/16] spi: omap2-mcspi: add generic DMA request support to the DT binding Date: Thu, 11 Oct 2012 15:04:40 -0400 Message-Id: <1349982281-10785-16-git-send-email-mporter@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1349982281-10785-1-git-send-email-mporter@ti.com> References: <1349982281-10785-1-git-send-email-mporter@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.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"; +}; +