dmaengine: pl330: add max burst for dmaengine
This patch add max burst capability for dmaengine and
limit burst capability to one for PL330_QUIRK_BROKEN_NO_FLUSHP
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 008408db..1b0453b 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -33,6 +33,7 @@
#define PL330_MAX_CHAN 8
#define PL330_MAX_IRQS 32
#define PL330_MAX_PERI 32
+#define PL330_MAX_BURST 16
#define PL330_QUIRK_BROKEN_NO_FLUSHP BIT(0)
@@ -2938,6 +2939,8 @@
pd->dst_addr_widths = PL330_DMA_BUSWIDTHS;
pd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
pd->residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
+ pd->max_burst = ((pl330->quirks & PL330_QUIRK_BROKEN_NO_FLUSHP) ?
+ 1 : PL330_MAX_BURST);
ret = dma_async_device_register(pd);
if (ret) {