summaryrefslogtreecommitdiff
path: root/drivers/dma
diff options
context:
space:
mode:
authorPaul Cercueil <paul@crapouillou.net>2018-08-30 00:32:52 +0300
committerVinod Koul <vkoul@kernel.org>2018-09-11 10:29:26 +0300
commit17a8e30e9daf7f65e06a899d37a043c081334e5d (patch)
tree0ee1f1017a9a2f6384d30b95dc3eda961d21dcd4 /drivers/dma
parentae9156b63d94bb7e4f8be25e0d67326fbd07e0ef (diff)
downloadlinux-17a8e30e9daf7f65e06a899d37a043c081334e5d.tar.xz
dmaengine: dma-jz4780: Enable Fast DMA to the AIC
With the fast DMA bit set, the DMA will transfer twice as much data per clock period to the AIC, so there is little point not to set it. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dma-jz4780.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index 565971c2a33c..3a4d0a4b550d 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -52,6 +52,7 @@
#define JZ_DMA_DMAC_DMAE BIT(0)
#define JZ_DMA_DMAC_AR BIT(2)
#define JZ_DMA_DMAC_HLT BIT(3)
+#define JZ_DMA_DMAC_FAIC BIT(27)
#define JZ_DMA_DMAC_FMSC BIT(31)
#define JZ_DMA_DRT_AUTO 0x8
@@ -923,8 +924,8 @@ static int jz4780_dma_probe(struct platform_device *pdev)
* Also set the FMSC bit - it increases MSC performance, so it makes
* little sense not to enable it.
*/
- jz4780_dma_ctrl_writel(jzdma, JZ_DMA_REG_DMAC,
- JZ_DMA_DMAC_DMAE | JZ_DMA_DMAC_FMSC);
+ jz4780_dma_ctrl_writel(jzdma, JZ_DMA_REG_DMAC, JZ_DMA_DMAC_DMAE |
+ JZ_DMA_DMAC_FAIC | JZ_DMA_DMAC_FMSC);
if (soc_data->flags & JZ_SOC_DATA_PROGRAMMABLE_DMA)
jz4780_dma_ctrl_writel(jzdma, JZ_DMA_REG_DMACP, 0);