dt-bindings: memory: convert Broadcom DPFE to dtschema

Convert Broadcom DDR PHY Front End (DPFE) bindings to DT schema format
using json-schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Markus Mayer <mmayer@broadcom.com>
Link: https://lore.kernel.org/r/20210817080617.14503-1-krzysztof.kozlowski@canonical.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/memory-controllers/brcm,dpfe-cpu.txt

-DDR PHY Front End (DPFE) for Broadcom STB
-=========================================
-
-DPFE and the DPFE firmware provide an interface for the host CPU to
-communicate with the DCPU, which resides inside the DDR PHY.
-
-There are three memory regions for interacting with the DCPU. These are
-specified in a single reg property.
-
-Required properties:
-  - compatible: must be "brcm,bcm7271-dpfe-cpu", "brcm,bcm7268-dpfe-cpu"
-    or "brcm,dpfe-cpu"
-  - reg: must reference three register ranges
-      - start address and length of the DCPU register space
-      - start address and length of the DCPU data memory space
-      - start address and length of the DCPU instruction memory space
-  - reg-names: must contain "dpfe-cpu", "dpfe-dmem", and "dpfe-imem";
-        they must be in the same order as the register declarations
-
-Example:
-	dpfe_cpu0: dpfe-cpu@f1132000 {
-		compatible = "brcm,bcm7271-dpfe-cpu", "brcm,dpfe-cpu";
-		reg =  <0xf1132000 0x180
-			0xf1134000 0x1000
-			0xf1138000 0x4000>;
-		reg-names = "dpfe-cpu", "dpfe-dmem", "dpfe-imem";
-	};

Documentation/devicetree/bindings/memory-controllers/brcm,dpfe-cpu.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/brcm,dpfe-cpu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DDR PHY Front End (DPFE) for Broadcom STB
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+  - Markus Mayer <mmayer@broadcom.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - brcm,bcm7271-dpfe-cpu
+          - brcm,bcm7268-dpfe-cpu
+      - const: brcm,dpfe-cpu
+
+  reg:
+    items:
+      - description: DCPU register space
+      - description: DCPU data memory space
+      - description: DCPU instruction memory space
+
+  reg-names:
+    items:
+      - const: dpfe-cpu
+      - const: dpfe-dmem
+      - const: dpfe-imem
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    dpfe-cpu@f1132000 {
+        compatible = "brcm,bcm7271-dpfe-cpu", "brcm,dpfe-cpu";
+        reg = <0xf1132000 0x180>,
+              <0xf1134000 0x1000>,
+              <0xf1138000 0x4000>;
+        reg-names = "dpfe-cpu", "dpfe-dmem", "dpfe-imem";
+    };

MAINTAINERS

@@ -3854,7 +3854,7 @@ M:	Markus Mayer <mmayer@broadcom.com>
 M:	bcm-kernel-feedback-list@broadcom.com
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-F:	Documentation/devicetree/bindings/memory-controllers/brcm,dpfe-cpu.txt
+F:	Documentation/devicetree/bindings/memory-controllers/brcm,dpfe-cpu.yaml
 F:	drivers/memory/brcmstb_dpfe.c
 
 BROADCOM STB NAND FLASH DRIVER