linux-kernel - Re: [PATCHv5] dmaengine: Add support for BCM2835

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Message-ID: <loom.20131224T151818-230@post.gmane.org>
Date:	Tue, 24 Dec 2013 14:31:31 +0000 (UTC)
From:	Gene Anderson <gwa@....net>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv5] dmaengine: Add support for BCM2835

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, 

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