ARM: dts: Add Altera L2 Cache and OCRAM EDAC entries

Add the device tree entries and bindings needed to support the Altera L2
cache and On-Chip RAM EDAC. This patch relies upon an earlier patch to
declare and setup On-chip RAM properly:

  8b907c8b62ac ("arm: dts: socfpga: Add OCRAM node")

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: galak@codeaurora.org
Cc: grant.likely@linaro.org
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: ijc+devicetree@hellion.org.uk
Cc: Kumar Gala <galak@codeaurora.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux@arm.linux.org.uk
Cc: linux-doc@vger.kernel.org
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: m.chehab@samsung.com
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Link: http://lkml.kernel.org/r/1455132384-17108-2-git-send-email-tthayer@opensource.altera.com
Signed-off-by: Borislav Petkov <bp@suse.de>

Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt

@@ -0,0 +1,49 @@
+Altera SoCFPGA ECC Manager
+This driver uses the EDAC framework to implement the SOCFPGA ECC Manager.
+The ECC Manager counts and corrects single bit errors and counts/handles
+double bit errors which are uncorrectable.
+
+Required Properties:
+- compatible : Should be "altr,socfpga-ecc-manager"
+- #address-cells: must be 1
+- #size-cells: must be 1
+- ranges : standard definition, should translate from local addresses
+
+Subcomponents:
+
+L2 Cache ECC
+Required Properties:
+- compatible : Should be "altr,socfpga-l2-ecc"
+- reg : Address and size for ECC error interrupt clear registers.
+- interrupts : Should be single bit error interrupt, then double bit error
+	interrupt. Note the rising edge type.
+
+On Chip RAM ECC
+Required Properties:
+- compatible : Should be "altr,socfpga-ocram-ecc"
+- reg : Address and size for ECC error interrupt clear registers.
+- iram : phandle to On-Chip RAM definition.
+- interrupts : Should be single bit error interrupt, then double bit error
+	interrupt. Note the rising edge type.
+
+Example:
+
+	eccmgr: eccmgr@ffd08140 {
+		compatible = "altr,socfpga-ecc-manager";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		l2-ecc@ffd08140 {
+			compatible = "altr,socfpga-l2-ecc";
+			reg = <0xffd08140 0x4>;
+			interrupts = <0 36 1>, <0 37 1>;
+		};
+
+		ocram-ecc@ffd08144 {
+			compatible = "altr,socfpga-ocram-ecc";
+			reg = <0xffd08144 0x4>;
+			iram = <&ocram>;
+			interrupts = <0 178 1>, <0 179 1>;
+		};
+	};

arch/arm/boot/dts/socfpga.dtsi

@@ -656,6 +656,26 @@
 			status = "disabled";
 		};
 
+		eccmgr: eccmgr@ffd08140 {
+			compatible = "altr,socfpga-ecc-manager";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			l2-ecc@ffd08140 {
+				compatible = "altr,socfpga-l2-ecc";
+				reg = <0xffd08140 0x4>;
+				interrupts = <0 36 1>, <0 37 1>;
+			};
+
+			ocram-ecc@ffd08144 {
+				compatible = "altr,socfpga-ocram-ecc";
+				reg = <0xffd08144 0x4>;
+				iram = <&ocram>;
+				interrupts = <0 178 1>, <0 179 1>;
+			};
+		};
+
 		L2: l2-cache@fffef000 {
 			compatible = "arm,pl310-cache";
 			reg = <0xfffef000 0x1000>;