[PATCH 1/3] dt-bindings: memory: mediatek: Add support of unmanaged iommu domain

[Alexandre Bailon]

Currently, the only way to have an unmanaged domain for a device
is having a dedicated iova region or bank.
This adds a new bit to MTK_M4U_ID that allows defining devices
that needs unmanaged iommu domain.

Signed-off-by: Alexandre Bailon <abailon at baylibre.com>
---
 include/dt-bindings/memory/mtk-memory-port.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/dt-bindings/memory/mtk-memory-port.h b/include/dt-bindings/memory/mtk-memory-port.h
index 2f68a0511a257..86896c776691a 100644
--- a/include/dt-bindings/memory/mtk-memory-port.h
+++ b/include/dt-bindings/memory/mtk-memory-port.h
@@ -7,11 +7,14 @@
 #define __DT_BINDINGS_MEMORY_MTK_MEMORY_PORT_H_
 
 #define MTK_LARB_NR_MAX			32
+#define MTK_UNMANAGED_DEVICE            (1 << 31)
 
 #define MTK_M4U_ID(larb, port)		(((larb) << 5) | (port))
 #define MTK_M4U_TO_LARB(id)		(((id) >> 5) & 0x1f)
 #define MTK_M4U_TO_PORT(id)		((id) & 0x1f)
+#define MTK_M4U_UNMANAGED(id)		((id) & MTK_UNMANAGED_DEVICE)
 
 #define MTK_IFAIOMMU_PERI_ID(port)	MTK_M4U_ID(0, port)
+#define MTK_M4U_UNMANAGED_ID(larb, port) (MTK_M4U_ID(larb, port) | MTK_UNMANAGED_DEVICE)
 
 #endif
-- 
2.38.2