Messages in this thread | | | Date | Mon, 30 Aug 2021 10:48:52 +0100 | From | Paul Cercueil <> | Subject | Re: [PATCH] dmaengine: jz4780: Set max number of SGs per burst |
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Hi,
Le dim., août 29 2021 at 21:58:05 +0200, Artur Rojek <contact@artur-rojek.eu> 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@artur-rojek.eu>
Acked-by: Paul Cercueil <paul@crapouillou.net>
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 >
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