From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Monnier Subject: Re: [PATCH 0/3] Using SPI NOR flah on sunxi. Date: Fri, 01 May 2015 08:27:45 -0400 Message-ID: References: Reply-To: monnier-CRDzTM1onBSWkKpYnGOUKg@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , To: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org > The SPI driver returns an error when more than 64 bytes are > transferred at once due to lack of DMA support. Have you tried the dmaengine patch and make the SPI driver use it? Stefan