Hi Vinod,
Le lun., août 30 2021 at 10:48:52 +0100, Paul Cercueil
<paul@xxxxxxxxxxxxxxx> a écrit :
Hi,
Le dim., août 29 2021 at 21:58:05 +0200, Artur Rojek
<contact@xxxxxxxxxxxxxx> a écrit :
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@xxxxxxxxxxxxxx>
Acked-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Feedback on this?
Cheers,
-Paul
---
drivers/dma/dma-jz4780.c | 1 +
1 file changed, 1 insertion(+)
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.
--
2.33.0
