From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lauri Hintsala Subject: mxs-auart serial driver DMA support? Date: Thu, 12 Jan 2012 08:33:20 +0200 Message-ID: <4F0E7EB0.2060906@bluegiga.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Sascha Hauer Cc: "linux-arm-kernel@lists.infradead.org" , linux-serial@vger.kernel.org List-Id: linux-serial@vger.kernel.org Hi, Any plans to add DMA support for mxs-auart serial driver? I noticed it is impossible to archive full 3.25 Mbs speed with current one. There is DMA supported driver on freescale's git tree: http://opensource.freescale.com/git?p=imx/linux-2.6-imx.git;a=blob;f=drivers/serial/mxs-auart.c;hb=imx_2.6.35_11.09.01 As I understood porting DMA support from freescale's driver is not trivial because MXS DMA implementation has been changed to mainline version. Regards, Lauri Hintsala From mboxrd@z Thu Jan 1 00:00:00 1970 From: lauri.hintsala@bluegiga.com (Lauri Hintsala) Date: Thu, 12 Jan 2012 08:33:20 +0200 Subject: mxs-auart serial driver DMA support? Message-ID: <4F0E7EB0.2060906@bluegiga.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, Any plans to add DMA support for mxs-auart serial driver? I noticed it is impossible to archive full 3.25 Mbs speed with current one. There is DMA supported driver on freescale's git tree: http://opensource.freescale.com/git?p=imx/linux-2.6-imx.git;a=blob;f=drivers/serial/mxs-auart.c;hb=imx_2.6.35_11.09.01 As I understood porting DMA support from freescale's driver is not trivial because MXS DMA implementation has been changed to mainline version. Regards, Lauri Hintsala