From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Westerberg Subject: Re: [PATCH 1/5] dmaengine: add ep93xx DMA support Date: Thu, 26 May 2011 07:33:44 +0300 Message-ID: <20110526043344.GA2749@acer> References: <20110525195413.GC2996@acer> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-arm-kernel@lists.infradead.org, Vinod Koul , linux-kernel@vger.kernel.org, hsweeten@visionengravers.com, ryan@bluewatersys.com, Dan Williams , Grant Likely , spi mailing list To: Linus Walleij Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org On Wed, May 25, 2011 at 10:47:14PM +0200, Linus Walleij wrote: > > > IMHO it is better to have ep93xx implementation on its own driver since it is > > not a real AMBA PL022 peripheral but some weird hack made by Cirrus (although > > my opinions are bit biased). > > I disagree because it's IMO at first sight no more deviant than our "PL023" > variants that still use the same pl022 driver. Ok. Do you think that we can go forward with this patch series if I drop the last patch (spi/ep93xx: add DMA support)? This way we will have dmaengine implementation in place, whatever SPI driver we choose to use with ep93xx. We can then try to use amba-pl022 driver with ep93xx and see if it works or not, and how much work is needed. I would like some comments from Hartley and Ryan also. > Is there some inexepensive hardware with EP93xx I can get to fix this > myself? Check for example Technologic Systems (embeddedarm.com), I have their TS-7260 board which has ep9302.