From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756013AbYIWQuZ (ORCPT ); Tue, 23 Sep 2008 12:50:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754826AbYIWQqd (ORCPT ); Tue, 23 Sep 2008 12:46:33 -0400 Received: from de01egw02.freescale.net ([192.88.165.103]:65468 "EHLO de01egw02.freescale.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754833AbYIWQqc (ORCPT ); Tue, 23 Sep 2008 12:46:32 -0400 Message-ID: <48D91D61.2080800@freescale.com> Date: Tue, 23 Sep 2008 11:46:25 -0500 From: Timur Tabi User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.8.1.16) Gecko/20080702 SeaMonkey/1.1.11 MIME-Version: 1.0 To: Ira Snyder CC: linux-kernel@vger.kernel.org Subject: Re: Problems with Freescale DMA driver References: <20080825165133.GA20446@ovro.caltech.edu> <48D2D00B.3010001@freescale.com> <20080922230435.GA20825@ovro.caltech.edu> <48D8F73A.4050004@freescale.com> <20080923155935.GA7449@ovro.caltech.edu> <48D914DD.7080702@freescale.com> <20080923164322.GC7449@ovro.caltech.edu> In-Reply-To: <20080923164322.GC7449@ovro.caltech.edu> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ira Snyder wrote: > In this case, I probably would like to reserve a DMA channel for my > exclusive use. That way I won't run into problems by programming the DMA > by hand. If you write your own DMA driver, the current method for reserving a DMA channel is to change the compatible property for that channel in the device tree to something other than "fsl,elo-dma-channel" (or "fsl,eloplus-dma-channel"). -- Timur Tabi Linux kernel developer at Freescale