From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH v6 09/10] spi: omap2-mcspi: add generic DMA request support to the DT binding Date: Wed, 30 Jan 2013 09:24:00 +0000 Message-ID: <201301300924.00508.arnd@arndb.de> References: <1359529229-22207-1-git-send-email-mporter@ti.com> <1359529229-22207-10-git-send-email-mporter@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1359529229-22207-10-git-send-email-mporter-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" To: Matt Porter Cc: Linux DaVinci Kernel List , Linux OMAP List , Russell King , Linux Documentation List , Linux MMC List , Devicetree Discuss , Mark Brown , Sekhar Nori , Linux Kernel Mailing List , Rob Herring , Vinod Koul , Dan Williams , Linux SPI Devel List , Chris Ball , Linux ARM Kernel List List-Id: linux-mmc@vger.kernel.org On Wednesday 30 January 2013, Matt Porter wrote: > +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. The binding looks ok, but the wording is slightly incorrect here: strictly speaking, it's not a pair of controller phandle and request line number, but a DMA descriptor as specified in bindings/dma/dma.txt with a format specific to the dma engine being used. That can require more than just a single integer request number. Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Wed, 30 Jan 2013 09:24:00 +0000 Subject: [PATCH v6 09/10] spi: omap2-mcspi: add generic DMA request support to the DT binding In-Reply-To: <1359529229-22207-10-git-send-email-mporter@ti.com> References: <1359529229-22207-1-git-send-email-mporter@ti.com> <1359529229-22207-10-git-send-email-mporter@ti.com> Message-ID: <201301300924.00508.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wednesday 30 January 2013, Matt Porter wrote: > +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. The binding looks ok, but the wording is slightly incorrect here: strictly speaking, it's not a pair of controller phandle and request line number, but a DMA descriptor as specified in bindings/dma/dma.txt with a format specific to the dma engine being used. That can require more than just a single integer request number. Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754200Ab3A3JYc (ORCPT ); Wed, 30 Jan 2013 04:24:32 -0500 Received: from moutng.kundenserver.de ([212.227.17.8]:50823 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753431Ab3A3JY0 (ORCPT ); Wed, 30 Jan 2013 04:24:26 -0500 From: Arnd Bergmann To: Matt Porter Subject: Re: [PATCH v6 09/10] spi: omap2-mcspi: add generic DMA request support to the DT binding Date: Wed, 30 Jan 2013 09:24:00 +0000 User-Agent: KMail/1.12.2 (Linux/3.8.0-1-generic; KDE/4.3.2; x86_64; ; ) Cc: Tony Lindgren , Sekhar Nori , Grant Likely , Mark Brown , Benoit Cousson , Russell King , Vinod Koul , Rob Landley , Chris Ball , 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 , Dan Williams , Rob Herring References: <1359529229-22207-1-git-send-email-mporter@ti.com> <1359529229-22207-10-git-send-email-mporter@ti.com> In-Reply-To: <1359529229-22207-10-git-send-email-mporter@ti.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <201301300924.00508.arnd@arndb.de> X-Provags-ID: V02:K0:+o570P4CIb4GwX0VkZGbP+QH3niP0GesoOb9gz/BXty ih46GOI6MEQS0vdV59MlNK8yb9WvKG23+bGtFoN1nSv1Rgpfl2 XzE2vzu0lKZhFDYP9e4nQZ/iYeIzADXq7YAK/zsjTxtRClAaDE kVfLJW9ddLpE6hc4toKstzCWRfGBYiidGmMKXW86H0QhiAeSlA Bk0sXhVH7gsxx4LktcZiGT3dimb6wOl2ltsqNJtMyBYBLU4+Lt bcXNZG8rQGAG9RiFDcOGnYOr/HMf4YJD9JV0UnDe+emay5gLDj KilGy9F8Jh3hJP/7MD0Nm8K0VOjlgv11Uy61XvwYXKqhBpCEod s7H4cUFUNmMauIy3B0W8= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 30 January 2013, Matt Porter wrote: > +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. The binding looks ok, but the wording is slightly incorrect here: strictly speaking, it's not a pair of controller phandle and request line number, but a DMA descriptor as specified in bindings/dma/dma.txt with a format specific to the dma engine being used. That can require more than just a single integer request number. Arnd