Commit d59f7037 authored by Artur Rojek's avatar Artur Rojek Committed by Vinod Koul
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dmaengine: jz4780: Set max number of SGs per burst 



Total amount of SG list entries executed in a single burst is limited by
the number of available DMA descriptors.
This information is useful for device drivers utilizing this DMA engine.

Signed-off-by: default avatarArtur Rojek <contact@artur-rojek.eu>
Acked-by: default avatarPaul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210829195805.148964-1-contact@artur-rojek.eu


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 161596fd

drivers/dma/dma-jz4780.c

+1 −0
Original line number Diff line number Diff line
@@ -915,6 +915,7 @@ static int jz4780_dma_probe(struct platform_device *pdev) 
	dd->dst_addr_widths = JZ_DMA_BUSWIDTHS;

	dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);

	dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;

	dd->max_sg_burst = JZ_DMA_MAX_DESC;



	/*

	 * Enable DMA controller, mark all channels as not programmable.