From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux Subject: Re: [PATCH RFC 03/26] dmaengine: omap-dma: program hardware directly Date: Wed, 22 Jan 2014 14:13:13 +0000 Message-ID: <20140122141313.GP27282@n2100.arm.linux.org.uk> References: <20140102150836.GA3826@n2100.arm.linux.org.uk> <52DFBF89.3020102@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from gw-1.arm.linux.org.uk ([78.32.30.217]:45094 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755868AbaAVONX (ORCPT ); Wed, 22 Jan 2014 09:13:23 -0500 Content-Disposition: inline In-Reply-To: <52DFBF89.3020102@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Sricharan R Cc: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, Vinod Koul , Dan Williams On Wed, Jan 22, 2014 at 06:24:33PM +0530, Sricharan R wrote: > EI and FI are always set to zero. So interleaved transfers support > have to enabled in omap-dma, as it was supported by the > legacy driver. It was not enabled because of no users of the feature, > right ? None of the users of the legacy driver used this feature. Moreover, dmaengine doesn't have the interfaces to support this specialised feature at present. -- FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up. Estimation in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad. Estimate before purchase was "up to 13.2Mbit".