dmaengine: dw-axi-dmac: Set constraint to the Max segment size

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Add support for DMA Scatter-Gather (SG) constraint so that DMA clients can
handle the AxiDMA limitation.

Without supporting DMA constraint the default Max segment size reported by
dmaengine is 64KB, which is not supported by Intel KeemBay AxiDMA.

Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-17-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Sia Jee Heng 2021-01-25 09:32:54 +08:00 • committed by Vinod Koul

parent f74b302550

commit 78a90a1e48

2 changed files with 9 additions and 0 deletions

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8

drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c

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1

drivers/dma/dw-axi-dmac/dw-axi-dmac.h

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