From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: Re: [PATCH] PCI: layerscape: Add 'dma-coherent' property Date: Thu, 16 Jun 2016 08:43:41 +0800 Message-ID: <20160616004341.GK20243@tiger> References: <1465282546-28256-1-git-send-email-Gang.Liu@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1465282546-28256-1-git-send-email-Gang.Liu-3arQi8VN3Tc@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Liu Gang Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, minghuan.lian-3arQi8VN3Tc@public.gmane.org, leoyang.li-3arQi8VN3Tc@public.gmane.org, mingkai.hu-3arQi8VN3Tc@public.gmane.org, scott.wood-3arQi8VN3Tc@public.gmane.org List-Id: devicetree@vger.kernel.org On Tue, Jun 07, 2016 at 02:55:45PM +0800, Liu Gang wrote: > Add 'dma-coherent' description for PCI nodes. > > The 'dma-coherent' indicates that the hardware IP block can ensure > the coherency of the data transferred from/to the IP block. This > can avoid the software cache flush/invalid actions, and improve > the performance significantly. > > The PCI IP block of ls1043a has this capability, so adding > this feature to improve the PCI performance. > > Signed-off-by: Liu Gang Applied both, thanks. -- 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