[PATCHv9 3/3] arm: dts: Add Altera SDRAM controller bindings

[<tthayer@opensource.altera.com>]

From: Thor Thayer <tthayer@opensource.altera.com>

Add the Altera SDRAM controller bindings and device tree changes to the Altera SoC project.

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
---
v2: Changes to SoC SDRAM EDAC code.

v3: Implement code suggestions for SDRAM EDAC code.

v4: Remove syscon from SDRAM controller bindings.

v5: No Change, bump version for consistency.

v6: Only map the ctrlcfg register as syscon.

v7: No change. Bump for consistency.

v8: No change. Bump for consistency.

v9: Changes to support a MFD SDRAM controller with nested EDAC.
---
 .../devicetree/bindings/arm/altera/socfpga-sdr.txt |   13 +++++++++++++
 arch/arm/boot/dts/socfpga.dtsi                     |   10 ++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/altera/socfpga-sdr.txt

diff --git a/Documentation/devicetree/bindings/arm/altera/socfpga-sdr.txt b/Documentation/devicetree/bindings/arm/altera/socfpga-sdr.txt
new file mode 100644
index 0000000..2bb1ddf
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/altera/socfpga-sdr.txt
@@ -0,0 +1,13 @@
+Altera SOCFPGA SDRAM Controller
+The SDRAM controller is implemented as a MFD so various drivers may
+nest under this main SDRAM controller binding.
+
+Required properties:
+- compatible : "altr,sdr";
+- reg : Should contain 1 register range(address and length)
+
+Example:
+	sdr@0xffc25000 {
+		compatible = "altr,sdr";
+		reg = <0xffc25000 0x1000>;
+	};
diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi
index 4676f25..ecb306d 100644
--- a/arch/arm/boot/dts/socfpga.dtsi
+++ b/arch/arm/boot/dts/socfpga.dtsi
@@ -603,6 +603,16 @@
 			};
 		};
 
+		sdr@0xffc25000 {
+			compatible = "altr,sdr";
+			reg = <0xffc25000 0x1000>;
+
+			sdramedac@0 {
+				compatible = "altr,sdram-edac";
+				interrupts = <0 39 4>;
+			};
+		};
+
 		L2: l2-cache@fffef000 {
 			compatible = "arm,pl310-cache";
 			reg = <0xfffef000 0x1000>;
-- 
1.7.9.5