From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752687Ab3LXOfH (ORCPT ); Tue, 24 Dec 2013 09:35:07 -0500 Received: from plane.gmane.org ([80.91.229.3]:54686 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752232Ab3LXOfF (ORCPT ); Tue, 24 Dec 2013 09:35:05 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Gene Anderson Subject: Re: [PATCHv5] dmaengine: Add support for BCM2835 Date: Tue, 24 Dec 2013 14:31:31 +0000 (UTC) Message-ID: References: <52864BBC.7000506@koalo.de> <1384537403.14845.131.camel@smile> <20131115175155.GQ16735@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: sea.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 68.111.221.21 (Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_1) AppleWebKit/537.73.11 (KHTML, like Gecko) Version/7.0.1 Safari/537.73.11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Group: This is a request to augment with comments the DREQ explanation in the Broadcom BCM2835 pdf on page 61 regarding DMA peripheral mapping. Specifically, how to identify a pin on the 26 pin header to use for DMA reads. More specifically, if a clock signal, like GPCLK0 is output to the peripheral device (like an A/D converter) how we specify PERMAP in the DMA TI register. Your users would be infinitely grateful. thank you,