From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Babic Date: Mon, 16 Jul 2012 17:03:18 +0200 Subject: [U-Boot] [PATCH 3/3 V2] MX28: SPI: Add DMA transfer support In-Reply-To: <1341830913-12213-3-git-send-email-marex@denx.de> References: <1341830913-12213-1-git-send-email-marex@denx.de> <1341830913-12213-3-git-send-email-marex@denx.de> Message-ID: <50042D36.9030902@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 09/07/2012 12:48, Marek Vasut wrote: > The DMA transfers happen only if the transfered data are larger > than 512 bytes. Otherwise PIO is used. This is a small speed > optimization. > > The DMA transfer doesn't work if unaligned transfer is requested > due to the limitation of the DMA controller. This has to be fixed > by introducing generic bounce buffer. Therefore the DMA feature > is now disabled by default. > > Signed-off-by: Marek Vasut > Cc: Fabio Estevam > Cc: Otavio Salvador > Cc: Stefano Babic > Cc: Wolfgang Denk > --- Applied to u-boot-imx, next branch, thanks. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de =====================================================================