Commit 9c6e02ea authored Sep 19, 2023 by Kaiwei Liu Committed by Vinod Koul Oct 02, 2023

dmaengine: sprd: add dma mask interface in probe



In the probe of DMA, the default addressing range is 32 bits,
while the actual DMA hardware addressing range used is 36 bits.
So add dma_set_mask_and_coherent function to match DMA
addressing range.

Signed-off-by: Kaiwei Liu <kaiwei.liu@unisoc.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230919073801.25054-1-kaiwei.liu@unisoc.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>

parent a04bbeaa

drivers/dma/sprd-dma.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -1117,6 +1117,15 @@ static int sprd_dma_probe(struct platform_device *pdev)
		u32 chn_count;
		int ret, i;

		ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
		if (ret) {
		ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
		if (ret) {
		dev_err(&pdev->dev, "unable to set coherent mask to 32\n");
		return ret;
		}
		}

		/* Parse new and deprecated dma-channels properties */
		ret = device_property_read_u32(&pdev->dev, "dma-channels", &chn_count);
		if (ret)