[PATCH] dt-bindings: mfd: atmel: Convert to json schema

[Charan Pedumuru <charan.pedumuru@microchip.com>]

Convert old text based binding to json schema.
Changes during conversion:
The text binding is misleading, add a fallback `atmel,at91sam9260-gpbr`
for both `microchip,sam9x60-gpbr` and `microchip,sam9x7-gpbr` which is
missing in old binding and `microchip,sam9x60-gpbr` is not a fallback
for `microchip,sam9x7-gpbr`.

Signed-off-by: Charan Pedumuru <charan.pedumuru@microchip.com>
---
 .../bindings/mfd/atmel,at91sam9260-gpbr.yaml       | 44 ++++++++++++++++++++++
 .../devicetree/bindings/mfd/atmel-gpbr.txt         | 18 ---------
 2 files changed, 44 insertions(+), 18 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml b/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml
new file mode 100644
index 000000000000..f805545aa62a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/atmel,at91sam9260-gpbr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip AT91 General Purpose Backup Registers
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+
+description:
+  The system controller embeds 256 bits of General Purpose Backup
+  registers organized as 8 32-bit registers.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - atmel,at91sam9260-gpbr
+          - const: syscon
+      - items:
+          - enum:
+              - microchip,sam9x60-gpbr
+              - microchip,sam9x7-gpbr
+          - const: atmel,at91sam9260-gpbr
+          - const: syscon
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon@fffffd50 {
+        compatible = "atmel,at91sam9260-gpbr", "syscon";
+        reg = <0xfffffd50 0x10>;
+    };
diff --git a/Documentation/devicetree/bindings/mfd/atmel-gpbr.txt b/Documentation/devicetree/bindings/mfd/atmel-gpbr.txt
deleted file mode 100644
index 3c989d1760a2..000000000000
--- a/Documentation/devicetree/bindings/mfd/atmel-gpbr.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-* Device tree bindings for Atmel GPBR (General Purpose Backup Registers)
-
-The GPBR are a set of battery-backed registers.
-
-Required properties:
-- compatible:		Should be one of the following:
-			"atmel,at91sam9260-gpbr", "syscon"
-			"microchip,sam9x60-gpbr", "syscon"
-			"microchip,sam9x7-gpbr", "microchip,sam9x60-gpbr", "syscon"
-- reg:			contains offset/length value of the GPBR memory
-			region.
-
-Example:
-
-gpbr: gpbr@fffffd50 {
-	compatible = "atmel,at91sam9260-gpbr", "syscon";
-	reg = <0xfffffd50 0x10>;
-};

---
base-commit: 91e71d606356e50f238d7a87aacdee4abc427f07
change-id: 20241211-gpbr-24ac0823cde5

Best regards,
-- 
Charan Pedumuru <charan.pedumuru@microchip.com>