Clarification regarding DMA in s3c2440.

[Vasily Khoruzhick]

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