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SubjectRe: [PATCH] dmaengine: jz4780: Set max number of SGs per burst
Hi Vinod,

Le lun., août 30 2021 at 10:48:52 +0100, Paul Cercueil
<paul@crapouillou.net> a écrit :
> 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>

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
>>
>


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