[PATCH] iommu: ipmmu-vmsa: Add DMA controllers to devices_allowlist

From: Koichiro Den

Date: Sun Oct 26 2025 - 20:48:44 EST


Add Renesas DMA controller devices to the devices_allowlist to enable
their use with the IPMMU. This allows DMA channels to operate through
the IOMMU when enabled.

Signed-off-by: Koichiro Den <den@xxxxxxxxxxxxx>
---
drivers/iommu/ipmmu-vmsa.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index ffa892f65714..88c4fb6424ed 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -741,7 +741,9 @@ static const char * const devices_allowlist[] = {
"ee100000.mmc",
"ee120000.mmc",
"ee140000.mmc",
- "ee160000.mmc"
+ "ee160000.mmc",
+ "e7350000.dma-controller",
+ "e7351000.dma-controller"
};

static bool ipmmu_device_is_allowed(struct device *dev)
--
2.48.1