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omap: DMA: Init CDAC to zero 

The register DMA4_CDAC needs to be initialized to zero
before starting DMA transfer.

Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Govindraj R <govindraj.raja@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Reported-by:S, Venkatraman <svenkatr@ti.com>
Signed-off-by: Manjunatha GK <manjugk@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
manjugk manjugk 2010-03-04 07:11:56 +00:00 committed by Tony Lindgren
parent 29501577a7
commit 519e61666f
1 changed files with 9 additions and 0 deletions
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9
arch/arm/plat-omap/dma.c
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@ -936,6 +936,15 @@ void omap_start_dma(int lch)
{
u32 l;
/*
* The CPC/CDAC register needs to be initialized to zero
* before starting dma transfer.
*/
if (cpu_is_omap15xx())
dma_write(0, CPC(lch));
else
dma_write(0, CDAC(lch));
if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
int next_lch, cur_lch;
char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT];