[RFC v2 08/12] ARM: mvebu: Add MBus to Armada 370/XP device tree

[Ezequiel Garcia]

The Armada 370/XP SoC family has a completely configurable address
space handled by the MBus controller.

This patch introduces the device tree layout of MBus, making the
'soc' node as mbus-compatible.
Since every peripheral/controller is a child of this 'soc' node,
this makes all of them sit behind the mbus, thus describing the
hardware accurately.

A translation entry has been added for the internal-regs mapping.
This can't be done in the common armada-370-xp.dtsi because A370
and AXP have different addressing width.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
---
 arch/arm/boot/dts/armada-370-xp.dtsi             | 7 ++-----
 arch/arm/boot/dts/armada-370.dtsi                | 6 ++++--
 arch/arm/boot/dts/armada-xp-gp.dts               | 3 ---
 arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts | 3 ---
 arch/arm/boot/dts/armada-xp.dtsi                 | 4 ++++
 5 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi
index 52a1f5e..633534dd 100644
--- a/arch/arm/boot/dts/armada-370-xp.dtsi
+++ b/arch/arm/boot/dts/armada-370-xp.dtsi
@@ -29,18 +29,15 @@
 	};
 
 	soc {
-		#address-cells = <1>;
+		#address-cells = <2>;
 		#size-cells = <1>;
-		compatible = "simple-bus";
 		interrupt-parent = <&mpic>;
-		ranges = <0          0 0xd0000000 0x0100000 /* internal registers */
-			  0xe0000000 0 0xe0000000 0x8100000 /* PCIe */>;
 
 		internal-regs {
 			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
-			ranges;
+			ranges = <0 0xffff0001 0 0x100000>;
 
 			mpic: interrupt-controller at 20000 {
 				compatible = "marvell,mpic";
diff --git a/arch/arm/boot/dts/armada-370.dtsi b/arch/arm/boot/dts/armada-370.dtsi
index 08ec6e3..937db5d 100644
--- a/arch/arm/boot/dts/armada-370.dtsi
+++ b/arch/arm/boot/dts/armada-370.dtsi
@@ -29,8 +29,10 @@
 	};
 
 	soc {
-		ranges = <0          0xd0000000 0x0100000 /* internal registers */
-			  0xe0000000 0xe0000000 0x8100000 /* PCIe */>;
+		compatible = "marvell,armada370-mbus";
+		reg = <0xd0020000 0x100>, <0xd0020180 0x20>;
+		ranges = <0xffff0001 0 0xd0000000 0x100000>;
+
 		internal-regs {
 			system-controller at 18200 {
 				compatible = "marvell,armada-370-xp-system-controller";
diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts
index e0c6f60..cc44b27 100644
--- a/arch/arm/boot/dts/armada-xp-gp.dts
+++ b/arch/arm/boot/dts/armada-xp-gp.dts
@@ -39,9 +39,6 @@
 	};
 
 	soc {
-		ranges = <0          0 0xd0000000 0x100000
-			  0xf0000000 0 0xf0000000 0x1000000>;
-
 		internal-regs {
 			serial at 12000 {
 				clock-frequency = <250000000>;
diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
index 27a0ecf..3863fe2 100644
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -27,9 +27,6 @@
 	};
 
 	soc {
-		ranges = <0          0 0xd0000000 0x100000
-			  0xf0000000 0 0xf0000000 0x8000000>;
-
 		internal-regs {
 			serial at 12000 {
 				clock-frequency = <250000000>;
diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
index 3e770db..dda8588 100644
--- a/arch/arm/boot/dts/armada-xp.dtsi
+++ b/arch/arm/boot/dts/armada-xp.dtsi
@@ -23,6 +23,10 @@
 	compatible = "marvell,armadaxp", "marvell,armada-370-xp";
 
 	soc {
+		compatible = "marvell,armadaxp-mbus";
+		reg = <0 0xd0020000 0 0x100>, <0 0xd0020180 0 0x20>;
+		ranges = <0xffff0001 0 0 0xd0000000 0x100000>;
+
 		internal-regs {
 			L2: l2-cache {
 				compatible = "marvell,aurora-system-cache";
-- 
1.8.1.5