From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH V6 2/2] dmaengine: add helper function to request a slave DMA channel Date: Tue, 18 Sep 2012 15:20:08 +0000 Message-ID: <201209181520.08845.arnd@arndb.de> References: <1347662517-4210-1-git-send-email-jon-hunter@ti.com> <1347938035.1943.162.camel@vkoul-udesk3> <20120918132113.GT27758@beef> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120918132113.GT27758@beef> 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: Vinod Koul , Russell King - ARM Linux , device-tree , Rob Herring , Dan Williams , Stephen Warren , linux-omap , linux-arm List-Id: linux-omap@vger.kernel.org On Tuesday 18 September 2012, Matt Porter wrote: > On Tue, Sep 18, 2012 at 08:43:55AM +0530, Vinod Koul wrote: > > > > Now would it make sense to NOT merge these changes for 3.7 and postpone > > to 3.8. I can host these patches on a topic branch and merge them when > > we are ready. I plan to spend some good amount of time on my work this > > week so we should be ready pretty soon. > > One these changes are merged, users can start moving to this scheme. > > FWIW, I'm already basing the EDMA dmaengine support for OMAP (specifically > for AM335x) on using these helpers since AM335x only boots from DT. I suspect the same thing will be happening for a lot of platforms after 3.7-rc1: ux500, lpc32xx, integrator, imx, mxs and probably others are all waiting for this so they can complete the move to DT-only booting. Having some support for the new binding in 3.7 would be a great help to reduce interdependencies for the 3.8 merge cycle. Both the driver interface and the binding should actually be in a good shape now, so I'd very much appriciate it getting merged for 3.7, even if the implementation may have to change again in 3.8. Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Tue, 18 Sep 2012 15:20:08 +0000 Subject: [PATCH V6 2/2] dmaengine: add helper function to request a slave DMA channel In-Reply-To: <20120918132113.GT27758@beef> References: <1347662517-4210-1-git-send-email-jon-hunter@ti.com> <1347938035.1943.162.camel@vkoul-udesk3> <20120918132113.GT27758@beef> Message-ID: <201209181520.08845.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tuesday 18 September 2012, Matt Porter wrote: > On Tue, Sep 18, 2012 at 08:43:55AM +0530, Vinod Koul wrote: > > > > Now would it make sense to NOT merge these changes for 3.7 and postpone > > to 3.8. I can host these patches on a topic branch and merge them when > > we are ready. I plan to spend some good amount of time on my work this > > week so we should be ready pretty soon. > > One these changes are merged, users can start moving to this scheme. > > FWIW, I'm already basing the EDMA dmaengine support for OMAP (specifically > for AM335x) on using these helpers since AM335x only boots from DT. I suspect the same thing will be happening for a lot of platforms after 3.7-rc1: ux500, lpc32xx, integrator, imx, mxs and probably others are all waiting for this so they can complete the move to DT-only booting. Having some support for the new binding in 3.7 would be a great help to reduce interdependencies for the 3.8 merge cycle. Both the driver interface and the binding should actually be in a good shape now, so I'd very much appriciate it getting merged for 3.7, even if the implementation may have to change again in 3.8. Arnd