From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id mAG1EYeH002793 for ; Sat, 15 Nov 2008 20:14:34 -0500 Received: from smtp3-g19.free.fr (smtp3-g19.free.fr [212.27.42.29]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id mAG1EM5e016916 for ; Sat, 15 Nov 2008 20:14:22 -0500 To: Mike Rapoport References: <87prl4x28e.fsf@free.fr> <491C002F.4070804@compulab.co.il> From: Robert Jarzmik Date: Sun, 16 Nov 2008 02:14:20 +0100 In-Reply-To: <491C002F.4070804@compulab.co.il> (Mike Rapoport's message of "Thu\, 13 Nov 2008 12\:23\:43 +0200") Message-ID: <87ljvktqtv.fsf@free.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: video4linux-list@redhat.com Subject: Re: pxa_camera: DMA alignment requirement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: Mike Rapoport writes: > Robert Jarzmik wrote: >> Hello, >> >> In the pxa camera driver, the 3 DMA channels used are MMU page aligned. Does >> somebody remember where that constraint comes from ? >> > > As far as I remember, the buffers should be page aligned to allow overlaying of > captured data. Ah, so that's it, thanks. >>From what I read on the PXA manual, the only constraint is 16bytes alignement. Would you also remember who wrote the code, so that I can ask him where he read about page alignement constraint please ? Cheers. -- Robert -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list