From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: [PATCH RESEND v2 0/2] ARM: sun8i: Add DMA controller support Date: Wed, 12 Nov 2014 15:06:06 +0530 Message-ID: <20141112093606.GC24582@intel.com> References: <1415333747-24075-1-git-send-email-wens@csie.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1415333747-24075-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Chen-Yu Tsai Cc: Maxime Ripard , Dan Williams , Grant Likely , Rob Herring , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org On Fri, Nov 07, 2014 at 12:15:45PM +0800, Chen-Yu Tsai wrote: > Hi Vinod, > > This is my sun8i DMA controller series rebased onto slave-dma/next > (2ffff42 "dmaengine: xdmac: fix print warning on dma_addr_t variable") > > Original cover letter: > > This is v2 of my sun8i DMA controller support series. This series > adds support for the DMA controller found in the Allwinner A23 SoC. > It is the same hardware as found in the A31 (sun6i) SoC. In addition > to reduced physical channels and endpoints, the controller in the A23 > requires an undocumented register to be toggled. That seems to allow > memory bus access. > > This series is based on my earlier "clk: sun6i: Unify AHB1 clock and > fix rate calculation" series, which removes the clock muxing calls from > the sun6i-dma driver. The default PLL6 pre-divider for AHB1 on the A23 > results in an exceedingly high clock rate for AHB1, and the system hangs. > Also, on the A23, the dma controller happily works even when AHB1 is > clocked from AXI. Applied, thanks -- ~Vinod -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html