From: Paul Cercueil Date: Wed, 29 Aug 2018 21:32:52 +0000 (+0200) Subject: dmaengine: dma-jz4780: Enable Fast DMA to the AIC X-Git-Tag: v5.4-rc1~2381^2~6^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=17a8e30e9daf7f65e06a899d37a043c081334e5d;p=platform%2Fkernel%2Flinux-rpi.git 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 Tested-by: Mathieu Malaterre Reviewed-by: PrasannaKumar Muralidharan Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index 565971c..3a4d0a4 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);