Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754529Ab2JRIqs (ORCPT ); Thu, 18 Oct 2012 04:46:48 -0400 Received: from tx2ehsobe005.messaging.microsoft.com ([65.55.88.15]:47628 "EHLO tx2outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753220Ab2JRIqp convert rfc822-to-8bit (ORCPT ); Thu, 18 Oct 2012 04:46:45 -0400 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzc89bhzz1202h1d1ah1d2ah1082kzzz2dh2a8h668h839h93fhd25he5bhf0ah107ah1288h12a5h12a9h12bdh1354h137ah13b6h1441h1155h) Message-ID: <507FC290.10205@freescale.com> Date: Thu, 18 Oct 2012 16:49:20 +0800 From: Huang Shijie User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.24) Gecko/20111108 Fedora/3.1.16-1.fc14 Thunderbird/3.1.16 MIME-Version: 1.0 To: Marek Vasut CC: Vinod Koul , , , , , , , , , , , , , , , , , , , , Huang Shijie , Fabio Estevam Subject: Re: [PATCH] dma: add new DMA control commands References: <1350538335-29026-1-git-send-email-b32955@freescale.com> <201210180914.58527.marex@denx.de> <507FB495.7050104@freescale.com> <201210181016.06782.marex@denx.de> In-Reply-To: <201210181016.06782.marex@denx.de> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8BIT X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 646 Lines: 18 于 2012年10月18日 16:16, Marek Vasut 写道: > So we can't stream data from the chip? About time to adjust the MTD framework to > allow that. Maybe implement a command queue? > IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to check the busy status which means we have to stop in the middle, so we can not chain the all the read-pages DMA commands. thanks Huang Shijie -- 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/