Set the maximumg DMA segment size from the actual core configuration
value. Without this setting, the default value of 64 KiB is reported,
and larger sizes cannot be used for IIO DMAEngine buffers.

Signed-off-by: Thomas Gessler <thomas.gessler@brueckmann-gmbh.de>
---
 drivers/dma/xilinx/xilinx_dma.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 108a7287f4cd..4b4a299e3807 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3114,6 +3114,8 @@ static int xilinx_dma_probe(struct platform_device *pdev)
 		}
 	}
 
+	dma_set_max_seg_size(xdev->dev, xdev->max_buffer_len);
+
 	if (xdev->dma_config->dmatype == XDMA_TYPE_AXIDMA) {
 		xdev->has_axistream_connected =
 			of_property_read_bool(node, "xlnx,axistream-connected");
-- 
2.43.0

On Fri, 14 Mar 2025 14:47:15 +0100, Thomas Gessler wrote:
> Set the maximumg DMA segment size from the actual core configuration
> value. Without this setting, the default value of 64 KiB is reported,
> and larger sizes cannot be used for IIO DMAEngine buffers.
> 
> 

Applied, thanks!

[1/1] dmaengine: xilinx_dma: Set max segment size
      commit: ebf744fdc080763a243ea6b1a719b1857474a977

Best regards,
-- 
~Vinod

On Fri Mar 14, 2025 at 2:47 PM CET, Thomas Gessler wrote:
> Set the maximumg DMA segment size from the actual core configuration
> value. Without this setting, the default value of 64 KiB is reported,
> and larger sizes cannot be used for IIO DMAEngine buffers.
>
> Signed-off-by: Thomas Gessler <thomas.gessler@brueckmann-gmbh.de>

Tested-by: Folker Schwesinger <dev@folker-schwesinger.de>

> ---
>  drivers/dma/xilinx/xilinx_dma.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
> index 108a7287f4cd..4b4a299e3807 100644
> --- a/drivers/dma/xilinx/xilinx_dma.c
> +++ b/drivers/dma/xilinx/xilinx_dma.c
> @@ -3114,6 +3114,8 @@ static int xilinx_dma_probe(struct platform_device *pdev)
>  		}
>  	}
>  
> +	dma_set_max_seg_size(xdev->dev, xdev->max_buffer_len);
> +
>  	if (xdev->dma_config->dmatype == XDMA_TYPE_AXIDMA) {
>  		xdev->has_axistream_connected =
>  			of_property_read_bool(node, "xlnx,axistream-connected");