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From: Gene Anderson <gwa@cox.net>
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCHv5] dmaengine: Add support for BCM2835
Date: Tue, 24 Dec 2013 14:31:31 +0000 (UTC)	[thread overview]
Message-ID: <loom.20131224T151818-230@post.gmane.org> (raw)
In-Reply-To: 20131115175155.GQ16735@n2100.arm.linux.org.uk



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, 



      parent reply	other threads:[~2013-12-24 14:35 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-15 16:28 [PATCHv5] dmaengine: Add support for BCM2835 Florian Meier
2013-11-15 16:28 ` Florian Meier
2013-11-15 16:28 ` Florian Meier
     [not found] ` <52864BBC.7000506-oZ8rN/sblLk@public.gmane.org>
2013-11-15 17:03   ` Joe Perches
2013-11-15 17:03     ` Joe Perches
2013-11-15 17:03     ` Joe Perches
2013-11-15 17:43     ` Russell King - ARM Linux
2013-11-15 17:43       ` Russell King - ARM Linux
2013-11-15 17:43       ` Russell King - ARM Linux
2013-11-15 18:20       ` Joe Perches
2013-11-15 18:20         ` Joe Perches
2013-11-15 18:20         ` Joe Perches
2013-11-15 17:43 ` Shevchenko, Andriy
2013-11-15 17:43   ` Shevchenko, Andriy
2013-11-15 17:51   ` Russell King - ARM Linux
2013-11-15 17:51     ` Russell King - ARM Linux
     [not found]     ` <CAHp75Vf3CJNgSiSjoZ6dYjRRHWN4bTpMxRTLG37+wwtEsQbq4g@mail.gmail.com>
2013-11-16  9:39       ` Andy Shevchenko
2013-11-16  9:39         ` Andy Shevchenko
2013-11-16 11:27       ` Mark Brown
2013-11-16 11:27         ` Mark Brown
2013-11-16 11:41         ` Russell King - ARM Linux
2013-11-16 11:41           ` Russell King - ARM Linux
2013-11-16 12:22           ` Mark Brown
2013-11-16 12:22             ` Mark Brown
2013-12-24 14:31     ` Gene Anderson [this message]

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