From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752807AbbC1Bpw (ORCPT ); Fri, 27 Mar 2015 21:45:52 -0400 Received: from mout.kundenserver.de ([212.227.17.10]:49445 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752270AbbC1Bpu (ORCPT ); Fri, 27 Mar 2015 21:45:50 -0400 From: Arnd Bergmann To: Peter Ujfalusi Subject: Re: [PATCH v3 1/7] dmaengine: of_dma: Support for DMA routers Date: Sat, 28 Mar 2015 02:44:46 +0100 User-Agent: KMail/1.12.2 (Linux/3.8.0-35-generic; KDE/4.3.2; x86_64; ; ) Cc: vinod.koul@intel.com, tony@atomide.com, linux@arm.linux.org.uk, grant.likely@linaro.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, nm@ti.com References: <1427459213-14611-1-git-send-email-peter.ujfalusi@ti.com> <1427459213-14611-2-git-send-email-peter.ujfalusi@ti.com> In-Reply-To: <1427459213-14611-2-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <201503280244.46961.arnd@arndb.de> X-Provags-ID: V03:K0:CpZD97ReVpCSWLglw0qPnSFmAH8oGGQxEcv8bSd6b6aURXRlp/m SxwlyIZ4dBU3pu0D/Q9pUBQO+D+sA7GZqQINjmc5GmhXBaxe9bF7a1YuKNaUx+vWKDV575K Oqk89HF+6H5EJrd782WR4J9A3t4Gdece+EhvXj8VPFAOPD3evPXitEl/1Y7+h62PXdhjdM9 UGVw1mVN3HYUb0DAjrX7A== X-UI-Out-Filterresults: notjunk:1; Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 27 March 2015, Peter Ujfalusi wrote: > +Required property: > +- dma-device: phandle of the DMA controller. The router is modifying > + the DMA requests for this controller. This property seems rather specific to the case at hand, I would expect that one might also see routers like this that are connected to more than one dma-device, so maybe make it a list? It might also be better to name this as 'dma-controllers' or 'dma-masters', as it is not entirely obvious (without referencing the binding document) whether a dma device refers to the slave or the master. Arnd