From: Nava kishore Manne <nava.kishore.manne@amd.com>
Date: Tue, 3 Oct 2023 07:14:09 +0000 (+0530)
Subject: fpga: versal: Add support for 44-bit DMA operations
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d79eed22ba97c3031b2ef86f8b7ed0be2da5667d;p=linux.git

fpga: versal: Add support for 44-bit DMA operations

The existing implementation support only 32-bit DMA operation.
So, it fails to load the bitstream for the high DDR designs(Beyond 4GB).
To fix this issue update the DMA mask handling logic to support 44-bit
DMA operations.

Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20231003071409.4165149-1-nava.kishore.manne@amd.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
---

diff --git a/drivers/fpga/versal-fpga.c b/drivers/fpga/versal-fpga.c
index e1601b3a345b7..3710e8f01be25 100644
--- a/drivers/fpga/versal-fpga.c
+++ b/drivers/fpga/versal-fpga.c
@@ -48,7 +48,7 @@ static int versal_fpga_probe(struct platform_device *pdev)
 	struct fpga_manager *mgr;
 	int ret;
 
-	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(44));
 	if (ret < 0) {
 		dev_err(dev, "no usable DMA configuration\n");
 		return ret;