[PATCH v4 10/18] dmaengine: dma-jz4780: Enable Fast DMA to the AIC

[Paul Cercueil <paul@crapouillou.net>]

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>
---
 drivers/dma/dma-jz4780.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

 v2: No change

 v3: No change

 v4: No change

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);
-- 
2.11.0