From: anarsoul@gmail.com (Vasily Khoruzhick)
To: linux-arm-kernel@lists.infradead.org
Subject: Clarification regarding DMA in s3c2440.
Date: Wed, 27 Apr 2011 18:41:19 +0300 [thread overview]
Message-ID: <201104271841.19619.anarsoul@gmail.com> (raw)
In-Reply-To: <201104262146.20149.mindentropy@gmail.com>
On Tuesday 26 April 2011 19:16:19 mindentropy wrote:
> Hi All,
>
> I am having some trouble understanding the datasheet of s3c2440 CPU in
> the DMA part.(I am trying to understand the dma controller code).
>
> In chapter 8 second page under the heading DMA request sources the
> number of sources should be 7 and not 4.
True
> In the s3c2410 the sources
> are 5 but they have given it as 4.
s3c2440 has 18 dma sources, but not every channel is valid for some source,
check arch/arm/mach-s3c2440/dma.c, struct s3c24xx_dma_map - it follows table
8-1 in mentioned datasheet.
Regards
Vasily
next prev parent reply other threads:[~2011-04-27 15:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-26 16:16 Clarification regarding DMA in s3c2440 mindentropy
2011-04-27 15:41 ` Vasily Khoruzhick [this message]
2011-04-27 18:07 ` mindentropy
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