[PATCH 03/15] dt-bindings: memory: fsl: convert ifc binding to yaml schema

[Li Yang <leoyang.li@nxp.com>]

Convert the txt binding to yaml format and add description.  Also
updated the recommended node name to ifc-bus to align with the
simple-bus node name requirements.

Signed-off-by: Li Yang <leoyang.li@nxp.com>
---
 .../bindings/memory-controllers/fsl/ifc.txt   |  82 ----------
 .../bindings/memory-controllers/fsl/ifc.yaml  | 140 ++++++++++++++++++
 2 files changed, 140 insertions(+), 82 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/fsl/ifc.yaml

diff --git a/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt b/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
deleted file mode 100644
index 89427b018ba7..000000000000
--- a/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
+++ /dev/null
@@ -1,82 +0,0 @@
-Integrated Flash Controller
-
-Properties:
-- name : Should be ifc
-- compatible : should contain "fsl,ifc". The version of the integrated
-               flash controller can be found in the IFC_REV register at
-               offset zero.
-
-- #address-cells : Should be either two or three.  The first cell is the
-                   chipselect number, and the remaining cells are the
-                   offset into the chipselect.
-- #size-cells : Either one or two, depending on how large each chipselect
-                can be.
-- reg : Offset and length of the register set for the device
-- interrupts: IFC may have one or two interrupts.  If two interrupt
-              specifiers are present, the first is the "common"
-              interrupt (CM_EVTER_STAT), and the second is the NAND
-              interrupt (NAND_EVTER_STAT).  If there is only one,
-              that interrupt reports both types of event.
-
-- little-endian : If this property is absent, the big-endian mode will
-                  be in use as default for registers.
-
-- ranges : Each range corresponds to a single chipselect, and covers
-           the entire access window as configured.
-
-Child device nodes describe the devices connected to IFC such as NOR (e.g.
-cfi-flash) and NAND (fsl,ifc-nand). There might be board specific devices
-like FPGAs, CPLDs, etc.
-
-Example:
-
-	ifc@ffe1e000 {
-		compatible = "fsl,ifc", "simple-bus";
-		#address-cells = <2>;
-		#size-cells = <1>;
-		reg = <0x0 0xffe1e000 0 0x2000>;
-		interrupts = <16 2 19 2>;
-		little-endian;
-
-		/* NOR, NAND Flashes and CPLD on board */
-		ranges = <0x0 0x0 0x0 0xee000000 0x02000000
-			  0x1 0x0 0x0 0xffa00000 0x00010000
-			  0x3 0x0 0x0 0xffb00000 0x00020000>;
-
-		flash@0,0 {
-			#address-cells = <1>;
-			#size-cells = <1>;
-			compatible = "cfi-flash";
-			reg = <0x0 0x0 0x2000000>;
-			bank-width = <2>;
-			device-width = <1>;
-
-			partition@0 {
-				/* 32MB for user data */
-				reg = <0x0 0x02000000>;
-				label = "NOR Data";
-			};
-		};
-
-		flash@1,0 {
-			#address-cells = <1>;
-			#size-cells = <1>;
-			compatible = "fsl,ifc-nand";
-			reg = <0x1 0x0 0x10000>;
-
-			partition@0 {
-				/* This location must not be altered  */
-				/* 1MB for u-boot Bootloader Image */
-				reg = <0x0 0x00100000>;
-				label = "NAND U-Boot Image";
-				read-only;
-			};
-		};
-
-		cpld@3,0 {
-			#address-cells = <1>;
-			#size-cells = <1>;
-			compatible = "fsl,p1010rdb-cpld";
-			reg = <0x3 0x0 0x000001f>;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.yaml b/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.yaml
new file mode 100644
index 000000000000..d37cae66b027
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.yaml
@@ -0,0 +1,140 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/fsl/ifc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: FSL/NXP Integrated Flash Controller
+
+maintainers:
+  - Li Yang <leoyang.li@nxp.com>
+
+description: |
+  NXP's integrated flash controller (IFC) is an advanced version of the
+  enhanced local bus controller which includes similar programming and signal
+  interfaces with an extended feature set. The IFC provides access to multiple
+  external memory types, such as NAND flash (SLC and MLC), NOR flash, EPROM,
+  SRAM and other memories where address and data are shared on a bus.
+
+allOf:
+  - $ref: /schemas/simple-bus.yaml#
+
+properties:
+  $nodename:
+    pattern: "^ifc-bus@[0-9a-f]+$"
+
+  compatible:
+    contains:
+      const: fsl,ifc
+
+  "#address-cells":
+    enum: [2, 3]
+    description: |
+      Should be either two or three.  The first cell is the chipselect
+      number, and the remaining cells are the offset into the chipselect.
+
+  "#size-cells":
+    enum: [1, 2]
+    description: |
+      Either one or two, depending on how large each chipselect can be.
+
+  reg:
+    maxItems: 1
+    description: |
+        Offset and length of the register set for the device.
+
+  interrupts:
+    minItems: 1
+    maxItems: 2
+    description: |
+      IFC may have one or two interrupts.  If two interrupt specifiers are
+      present, the first is the "common" interrupt (CM_EVTER_STAT), and the
+      second is the NAND interrupt (NAND_EVTER_STAT).  If there is only one,
+      that interrupt reports both types of event.
+
+  little-endian:
+    description: |
+      If this property is absent, the big-endian mode will be in use as default
+      for registers.
+
+  ranges:
+    description: |
+      Each range corresponds to a single chipselect, and covers the entire
+      access window as configured.
+
+patternProperties:
+  "^.*@[a-f0-9]+(,[a-f0-9]+)+$":
+    type: object
+    description: |
+      Child device nodes describe the devices connected to IFC such as NOR (e.g.
+      cfi-flash) and NAND (fsl,ifc-nand). There might be board specific devices
+      like FPGAs, CPLDs, etc.
+
+    required:
+      - compatible
+      - reg
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        ifc-bus@ffe1e000 {
+            compatible = "fsl,ifc", "simple-bus";
+            #address-cells = <2>;
+            #size-cells = <1>;
+            reg = <0x0 0xffe1e000 0 0x2000>;
+            interrupts = <16 2 19 2>;
+            little-endian;
+
+            /* NOR, NAND Flashes and CPLD on board */
+            ranges = <0x0 0x0 0x0 0xee000000 0x02000000>,
+                     <0x1 0x0 0x0 0xffa00000 0x00010000>,
+                     <0x3 0x0 0x0 0xffb00000 0x00020000>;
+
+            flash@0,0 {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                compatible = "cfi-flash";
+                reg = <0x0 0x0 0x2000000>;
+                bank-width = <2>;
+                device-width = <1>;
+
+                partition@0 {
+                    /* 32MB for user data */
+                    reg = <0x0 0x02000000>;
+                    label = "NOR Data";
+                };
+            };
+
+            flash@1,0 {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                compatible = "fsl,ifc-nand";
+                reg = <0x1 0x0 0x10000>;
+
+                partition@0 {
+                    /* This location must not be altered  */
+                    /* 1MB for u-boot Bootloader Image */
+                    reg = <0x0 0x00100000>;
+                    label = "NAND U-Boot Image";
+                    read-only;
+                };
+            };
+
+            cpld@3,0 {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                compatible = "fsl,p1010rdb-cpld";
+                reg = <0x3 0x0 0x000001f>;
+            };
+        };
+    };
-- 
2.17.1