[RFC V3 PATCH 4/8] dmaengine: xilinx_dma: Increase AXI DMA transaction segment count

Sarath Babu Naidu Gaddam sarath.babu.naidu.gaddam at amd.com
Mon Sep 19 22:51:15 PDT 2022


From: Radhey Shyam Pandey <radhey.shyam.pandey at xilinx.com>

Increase AXI DMA transaction segments count to ensure that even in
high load we always get a free segment in prepare descriptor for a
DMA_SLAVE transaction.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey at xilinx.com>
Signed-off-by: Sarath Babu Naidu Gaddam <sarath.babu.naidu.gaddam at amd.com>
---
Changes in V3 and V2:
- None
---
 drivers/dma/xilinx/xilinx_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 12b1281b19bf..8c6065cbda79 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -178,7 +178,7 @@
 #define XILINX_DMA_BD_SOP		BIT(27)
 #define XILINX_DMA_BD_EOP		BIT(26)
 #define XILINX_DMA_COALESCE_MAX		255
-#define XILINX_DMA_NUM_DESCS		255
+#define XILINX_DMA_NUM_DESCS		512
 #define XILINX_DMA_NUM_APP_WORDS	5
 
 /* AXI CDMA Specific Registers/Offsets */
-- 
2.25.1




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