Commit 519e6166 authored Mar 04, 2010 by manjugk manjugk Committed by Tony Lindgren Apr 22, 2010

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>

parent 29501577

arch/arm/plat-omap/dma.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -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];