[PATCH v2 07/11] iommu/ipmmu-vmsa: IPMMU device is 64-bit bus master

[Magnus Damm]

From: Magnus Damm <damm+rene...@opensource.se>

The r8a7795 IPMMU supports 64-bit bus mastering. Both
the coherent DMA mask and the streaming DMA mask are
set to unlock the 64-bit address space for coherent
allocations and streaming operations.

Signed-off-by: Magnus Damm <damm+rene...@opensource.se>
---

 Changes since V1:
 - Updated the commit message

 drivers/iommu/ipmmu-vmsa.c |    1 +
 1 file changed, 1 insertion(+)

--- 0019/drivers/iommu/ipmmu-vmsa.c
+++ work/drivers/iommu/ipmmu-vmsa.c     2016-06-06 11:01:28.730607110 +0900
@@ -1082,6 +1082,7 @@ static int ipmmu_probe(struct platform_d
        spin_lock_init(&mmu->lock);
        bitmap_zero(mmu->ctx, IPMMU_CTX_MAX);
        mmu->features = match->data;
+       dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
 
        /* Map I/O memory and request IRQ. */
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);