From: manjugk manjugk <[email protected]> The register DMA4_CDAC needs to be initialized to zero before starting DMA transfer.
Cc: Santosh Shilimkar <[email protected]> Cc: Govindraj R <[email protected]> Cc: Kevin Hilman <[email protected]> Reported-by:S, Venkatraman <[email protected]> Signed-off-by: Manjunatha GK <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> --- arch/arm/plat-omap/dma.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 2ab224c..f6c9bdc 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -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]; -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
