[PATCH] mtd: nand: brcmnand: Set appropriate DMA mask

[Florian Fainelli]

NAND controllers >= 7.0 with FLASH_DMA support physical addresses up to
40-bit, set an appropriate DMA mask for that purpose.

Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
 drivers/mtd/nand/raw/brcmnand/brcmnand.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index 1a66b1cd51c0..44518dada75b 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -2635,6 +2635,16 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc)
 		/* initialize the dma version */
 		brcmnand_flash_dma_revision_init(ctrl);
 
+		ret = -EIO;
+		if (ctrl->nand_version >= 0x0700)
+			ret = dma_set_mask_and_coherent(&pdev->dev,
+							DMA_BIT_MASK(40));
+		if (ret)
+			ret = dma_set_mask_and_coherent(&pdev->dev,
+							DMA_BIT_MASK(32));
+		if (ret)
+			goto err;
+
 		/* linked-list and stop on error */
 		flash_dma_writel(ctrl, FLASH_DMA_MODE, FLASH_DMA_MODE_MASK);
 		flash_dma_writel(ctrl, FLASH_DMA_ERROR_STATUS, 0);
-- 
2.17.1