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dmaengine: stm32-dma: add copy_align constraint
author
Amelie Delaunay
<amelie.delaunay@st.com>
Wed, 29 Jan 2020 15:36:26 +0000
(16:36 +0100)
committer
Vinod Koul
<vkoul@kernel.org>
Tue, 25 Feb 2020 05:45:05 +0000
(11:15 +0530)
This patch adds copy_align property in accordance with hardware
restriction.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Link:
https://lore.kernel.org/r/20200129153628.29329-7-amelie.delaunay@st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/dma/stm32-dma.c
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diff --git
a/drivers/dma/stm32-dma.c
b/drivers/dma/stm32-dma.c
index
b7e18cf
..
01a2374
100644
(file)
--- a/
drivers/dma/stm32-dma.c
+++ b/
drivers/dma/stm32-dma.c
@@
-1345,6
+1345,7
@@
static int stm32_dma_probe(struct platform_device *pdev)
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+ dd->copy_align = DMAENGINE_ALIGN_32_BYTES;
dd->max_burst = STM32_DMA_MAX_BURST;
dd->descriptor_reuse = true;
dd->dev = &pdev->dev;