diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index f7f571e7987e256a61088d3efaefc6b46d5ecd25..ec7eddf9e525e4dc5a9d09a4b23ee3d635d6c14b 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -290,7 +290,7 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count, val = dma_read(CCR(lch)); /* DMA_SYNCHRO_CONTROL_UPPER depends on the channel number */ - val &= ~((3 << 19) | 0x1f); + val &= ~((1 << 23) | (3 << 19) | 0x1f); val |= (dma_trigger & ~0x1f) << 14; val |= dma_trigger & 0x1f; @@ -304,11 +304,14 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count, else val &= ~(1 << 18); - if (src_or_dst_synch) + if (src_or_dst_synch == OMAP_DMA_DST_SYNC_PREFETCH) { + val &= ~(1 << 24); /* dest synch */ + val |= (1 << 23); /* Prefetch */ + } else if (src_or_dst_synch) { val |= 1 << 24; /* source synch */ - else + } else { val &= ~(1 << 24); /* dest synch */ - + } dma_write(val, CCR(lch)); } diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h index 02232ca2c37f87517acf9d0e3b85a4978de1d056..af3a03941addfd810a24452b2af25c749f3a8632 100644 --- a/arch/arm/plat-omap/include/plat/dma.h +++ b/arch/arm/plat-omap/include/plat/dma.h @@ -345,6 +345,7 @@ #define OMAP_DMA_SYNC_BLOCK 0x02 #define OMAP_DMA_SYNC_PACKET 0x03 +#define OMAP_DMA_DST_SYNC_PREFETCH 0x02 #define OMAP_DMA_SRC_SYNC 0x01 #define OMAP_DMA_DST_SYNC 0x00