Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933824AbaKMSeS (ORCPT ); Thu, 13 Nov 2014 13:34:18 -0500 Received: from www.linutronix.de ([62.245.132.108]:48651 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932648AbaKMSeR (ORCPT ); Thu, 13 Nov 2014 13:34:17 -0500 Message-ID: <5464F9A1.9080901@linutronix.de> Date: Thu, 13 Nov 2014 19:34:09 +0100 From: Sebastian Andrzej Siewior User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.2.0 MIME-Version: 1.0 To: Lennart Sorensen CC: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, tony@atomide.com, balbi@ti.com, gregkh@linuxfoundation.org, devicetree@vger.kernel.org Subject: Re: [PATCH 11/13] arm: dts: dra7: add DMA properties for UART References: <20141104170233.GB24112@csclub.uwaterloo.ca> <5459079D.7080703@linutronix.de> <20141104172117.GC24112@csclub.uwaterloo.ca> <20141104183315.GD24112@csclub.uwaterloo.ca> <20141104210315.GF24112@csclub.uwaterloo.ca> <20141105011506.GG24112@csclub.uwaterloo.ca> <5459DBB7.1090702@linutronix.de> <20141105153307.GN24110@csclub.uwaterloo.ca> <20141105162024.GH24112@csclub.uwaterloo.ca> <545A50BB.2020307@linutronix.de> <20141105194323.GI24112@csclub.uwaterloo.ca> In-Reply-To: <20141105194323.GI24112@csclub.uwaterloo.ca> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/05/2014 08:43 PM, Lennart Sorensen wrote: > I managed to get something dma related on uart3. But it isn't happy: > > [ 95.577401] DMA misaligned error with device 53 > repeated many times. > > I wonder if the dma support isn't quite working for the omap572x yet in > this tree (ti's 3.12.y tree), or maybe it is picky and the driver still > needs a bit of work. misaligned dma? I haven't seen any alignment requirement for SDMA/EDMA and I haven't seen this error on beagle board, am335x-evm or dra7-evm. > I have had no issues on uart7 and 8 without dma. So basically what you are saying is that DMA (no matter which channel) gives you this error and without DMA it works fine? Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/