dt-bindings: nvmem: Convert i.MX OCOTP to json-schema

Convert the i.MX OCOTP binding to DT schema format using json-schema.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/nvmem/imx-ocotp.txt

-Freescale i.MX6 On-Chip OTP Controller (OCOTP) device tree bindings
-
-This binding represents the on-chip eFuse OTP controller found on
-i.MX6Q/D, i.MX6DL/S, i.MX6SL, i.MX6SX, i.MX6UL, i.MX6ULL/ULZ, i.MX6SLL,
-i.MX7D/S, i.MX7ULP, i.MX8MQ, i.MX8MM, i.MX8MN and i.MX8MP SoCs.
-
-Required properties:
-- compatible: should be one of
-	"fsl,imx6q-ocotp" (i.MX6Q/D/DL/S),
-	"fsl,imx6sl-ocotp" (i.MX6SL), or
-	"fsl,imx6sx-ocotp" (i.MX6SX),
-	"fsl,imx6ul-ocotp" (i.MX6UL),
-	"fsl,imx6ull-ocotp" (i.MX6ULL/ULZ),
-	"fsl,imx7d-ocotp" (i.MX7D/S),
-	"fsl,imx6sll-ocotp" (i.MX6SLL),
-	"fsl,imx7ulp-ocotp" (i.MX7ULP),
-	"fsl,imx8mq-ocotp" (i.MX8MQ),
-	"fsl,imx8mm-ocotp" (i.MX8MM),
-	"fsl,imx8mn-ocotp" (i.MX8MN),
-	"fsl,imx8mp-ocotp" (i.MX8MP),
-	followed by "syscon".
-- #address-cells : Should be 1
-- #size-cells : Should be 1
-- reg: Should contain the register base and length.
-- clocks: Should contain a phandle pointing to the gated peripheral clock.
-
-Optional properties:
-- read-only: disable write access
-
-Optional Child nodes:
-
-- Data cells of ocotp:
-  Detailed bindings are described in bindings/nvmem/nvmem.txt
-
-Example:
-	ocotp: ocotp@21bc000 {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "fsl,imx6sx-ocotp", "syscon";
-		reg = <0x021bc000 0x4000>;
-		clocks = <&clks IMX6SX_CLK_OCOTP>;
-
-		tempmon_calib: calib@38 {
-			reg = <0x38 4>;
-		};
-
-		tempmon_temp_grade: temp-grade@20 {
-			reg = <0x20 4>;
-		};
-	};

Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/imx-ocotp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX6 On-Chip OTP Controller (OCOTP) device tree bindings
+
+maintainers:
+  - Anson Huang <Anson.Huang@nxp.com>
+
+description: |
+  This binding represents the on-chip eFuse OTP controller found on
+  i.MX6Q/D, i.MX6DL/S, i.MX6SL, i.MX6SX, i.MX6UL, i.MX6ULL/ULZ, i.MX6SLL,
+  i.MX7D/S, i.MX7ULP, i.MX8MQ, i.MX8MM, i.MX8MN and i.MX8MP SoCs.
+
+allOf:
+  - $ref: "nvmem.yaml#"
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - fsl,imx6q-ocotp
+        - fsl,imx6sl-ocotp
+        - fsl,imx6sx-ocotp
+        - fsl,imx6ul-ocotp
+        - fsl,imx6ull-ocotp
+        - fsl,imx7d-ocotp
+        - fsl,imx6sll-ocotp
+        - fsl,imx7ulp-ocotp
+        - fsl,imx8mq-ocotp
+        - fsl,imx8mm-ocotp
+        - fsl,imx8mn-ocotp
+        - fsl,imx8mp-ocotp
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+  - compatible
+  - reg
+
+patternProperties:
+  "^.*@[0-9a-f]+$":
+    type: object
+
+    properties:
+      reg:
+        maxItems: 1
+        description:
+          Offset and size in bytes within the storage device.
+
+    required:
+      - reg
+
+    additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx6sx-clock.h>
+
+    ocotp: efuse@21bc000 {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        compatible = "fsl,imx6sx-ocotp", "syscon";
+        reg = <0x021bc000 0x4000>;
+        clocks = <&clks IMX6SX_CLK_OCOTP>;
+
+        cpu_speed_grade: speed-grade@10 {
+            reg = <0x10 4>;
+        };
+
+        tempmon_calib: calib@38 {
+            reg = <0x38 4>;
+        };
+
+        tempmon_temp_grade: temp-grade@20 {
+            reg = <0x20 4>;
+        };
+    };
+
+...