marvell: drivers: Add address decoding units drivers

Add address decoding unit drivers for Marvell SoCs.

Address decoding flow and address translation units chart
are located at docs/marvell/misc/mvebu-a8k-addr-map.txt

Change-Id: Id6ce311fa1f4f112df3adfac5d20449f495f71ed
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
diff --git a/docs/marvell/misc/mvebu-ccu.txt b/docs/marvell/misc/mvebu-ccu.txt
new file mode 100644
index 0000000..9764027
--- /dev/null
+++ b/docs/marvell/misc/mvebu-ccu.txt
@@ -0,0 +1,23 @@
+Marvell CCU address decoding bindings
+=====================================
+
+CCU configration driver (1st stage address translation) for Marvell Armada 8K and 8K+ SoCs.
+
+The CCU node includes a description of the address decoding configuration.
+
+Mandatory functions:
+	- marvell_get_ccu_memory_map
+		return the CCU windows configuration and the number of windows
+		of the specific AP.
+
+Mandatory structures:
+	ccu_memory_map - Array that includes the configuration of the windows
+	  every window/entry is a struct which has 3 parameters:
+	  - Base address of the window
+	  - Size of the window
+	  - Target-ID of the window
+
+Example:
+	struct addr_map_win ccu_memory_map[] = {
+		{0x00000000f2000000,     0x00000000e000000,      IO_0_TID}, /* IO window */
+	};