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authorArtur Rojek <contact@artur-rojek.eu>2021-08-29 21:58:05 +0200
committerVinod Koul <vkoul@kernel.org>2021-10-18 12:07:27 +0530
commitd59f7037cec6b9388f658dfd4a56590a582467f0 (patch)
treeef24c9c6056bb424f58a895380adab37bb065bf8 /drivers/dma/dma-jz4780.c
parent161596fd776a54df922158175ed844804a861c37 (diff)
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: Artur Rojek <contact@artur-rojek.eu> Acked-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20210829195805.148964-1-contact@artur-rojek.eu Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/dma-jz4780.c')
-rw-r--r--drivers/dma/dma-jz4780.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index ebee94dbd630..96701dedcac8 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -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.