dt-bindings: memory: ti-emif: add edac support under emif

Certain revisions of the TI EMIF IP contain ECC support in them. Reflect
this in the DT binding. Also, add interrupts property as a required
property for the emif controller, as all revisions of the emif IP contain
interrupt support; this might remain unused by the kernel driver though.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>

Documentation/devicetree/bindings/memory-controllers/ti/emif.txt

@@ -3,7 +3,9 @@
 EMIF - External Memory Interface - is an SDRAM controller used in
 TI SoCs. EMIF supports, based on the IP revision, one or more of
 DDR2/DDR3/LPDDR2 protocols. This binding describes a given instance
-of the EMIF IP and memory parts attached to it.
+of the EMIF IP and memory parts attached to it. Certain revisions
+of the EMIF controller also contain optional ECC support, which
+corrects one bit errors and detects two bit errors.
 
 Required properties:
 - compatible	: Should be of the form "ti,emif-<ip-rev>" where <ip-rev>
@@ -11,6 +13,8 @@ Required properties:
   compatible should be one of the following:
   	     "ti,emif-am3352"
 	     "ti,emif-am4372"
+	     "ti,emif-dra7xx"
+	     "ti,emif-keystone"
 
 - phy-type	: <u32> indicating the DDR phy type. Following are the
   allowed values
@@ -22,6 +26,7 @@ Required properties:
 - ti,hwmods	: For TI hwmods processing and omap device creation
   the value shall be "emif<n>" where <n> is the number of the EMIF
   instance with base 1.
+- interrupts	: interrupt used by the controller
 
 Required only for "ti,emif-am3352" and "ti,emif-am4372":
 - sram			: Phandles for generic sram driver nodes,
@@ -71,3 +76,9 @@ emif: emif@4c000000 {
         sram = <&pm_sram_code
                 &pm_sram_data>;
 };
+
+emif1: emif@4c000000 {
+	compatible = "ti,emif-dra7xx";
+	reg = <0x4c000000 0x200>;
+	interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
+};