dt-bindings: interrupt-controller: Convert aspeed,ast2400-i2c-ic to DT schema

Convert the Aspeed I2C interrupt controller binding to schema format.

Drop the "#address-cells" and "#size-cells" as they are unused and
incorrect anyways.

Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20250505144605.1287121-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2400-i2c-ic.txt

@@ -1,25 +0,0 @@
-Device tree configuration for the I2C Interrupt Controller on the AST24XX and
-AST25XX SoCs.
-
-Required Properties:
-- #address-cells	: should be 1
-- #size-cells 		: should be 1
-- #interrupt-cells 	: should be 1
-- compatible 		: should be "aspeed,ast2400-i2c-ic"
-			  or "aspeed,ast2500-i2c-ic"
-- reg			: address start and range of controller
-- interrupts		: interrupt number
-- interrupt-controller	: denotes that the controller receives and fires
-			  new interrupts for child busses
-
-Example:
-
-i2c_ic: interrupt-controller@0 {
-	#address-cells = <1>;
-	#size-cells = <1>;
-	#interrupt-cells = <1>;
-	compatible = "aspeed,ast2400-i2c-ic";
-	reg = <0x0 0x40>;
-	interrupts = <12>;
-	interrupt-controller;
-};

Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2400-i2c-ic.yaml

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/aspeed,ast2400-i2c-ic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Aspeed I2C Interrupt Controller (AST24XX/AST25XX)
+
+maintainers:
+  - Ryan Chen <ryan_chen@aspeedtech.com>
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2400-i2c-ic
+      - aspeed,ast2500-i2c-ic
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#interrupt-cells'
+  - interrupts
+  - interrupt-controller
+
+additionalProperties: false
+
+examples:
+  - |
+    interrupt-controller@0 {
+        compatible = "aspeed,ast2400-i2c-ic";
+        reg = <0x0 0x40>;
+        #interrupt-cells = <1>;
+        interrupts = <12>;
+        interrupt-controller;
+    };

MAINTAINERS

@@ -2328,7 +2328,7 @@ L:	linux-i2c@vger.kernel.org
 L:	openbmc@lists.ozlabs.org (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
-F:	Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2400-i2c-ic.txt
+F:	Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2400-i2c-ic.yaml
 F:	drivers/i2c/busses/i2c-aspeed.c
 F:	drivers/irqchip/irq-aspeed-i2c-ic.c