dt-bindings: interrupt-controller: Convert arm,versatile-fpga-irq to DT schema

Convert the Arm Versatile FPGA interrupt controller binding to schema
format. It's a straight-forward conversion of the typical interrupt
controller.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250505144558.1286889-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt

@@ -1,38 +0,0 @@
-* ARM Versatile FPGA interrupt controller
-
-One or more FPGA IRQ controllers can be synthesized in an ARM reference board
-such as the Integrator or Versatile family. The output of these different
-controllers are OR:ed together and fed to the CPU tile's IRQ input. Each
-instance can handle up to 32 interrupts.
-
-Required properties:
-- compatible: "arm,versatile-fpga-irq"
-- interrupt-controller: Identifies the node as an interrupt controller
-- #interrupt-cells: The number of cells to define the interrupts.  Must be 1
-  as the FPGA IRQ controller has no configuration options for interrupt
-  sources.  The cell is a u32 and defines the interrupt number.
-- reg: The register bank for the FPGA interrupt controller.
-- clear-mask: a u32 number representing the mask written to clear all IRQs
-  on the controller at boot for example.
-- valid-mask: a u32 number representing a bit mask determining which of
-  the interrupts are valid. Unconnected/unused lines are set to 0, and
-  the system till not make it possible for devices to request these
-  interrupts.
-
-The "oxsemi,ox810se-rps-irq" compatible is deprecated.
-
-Example:
-
-pic: pic@14000000 {
-        compatible = "arm,versatile-fpga-irq";
-        #interrupt-cells = <1>;
-        interrupt-controller;
-        reg = <0x14000000 0x100>;
-        clear-mask = <0xffffffff>;
-        valid-mask = <0x003fffff>;
-};
-
-Optional properties:
-- interrupts: if the FPGA IRQ controller is cascaded, i.e. if its IRQ
-  output is simply connected to the input of another IRQ controller,
-  then the parent IRQ shall be specified in this property.

Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.yaml

@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/arm,versatile-fpga-irq.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Versatile FPGA IRQ Controller
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description:
+  One or more FPGA IRQ controllers can be synthesized in an ARM reference board
+  such as the Integrator or Versatile family. The output of these different
+  controllers are OR:ed together and fed to the CPU tile's IRQ input. Each
+  instance can handle up to 32 interrupts.
+
+properties:
+  compatible:
+    const: arm,versatile-fpga-irq
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+  reg:
+    maxItems: 1
+
+  clear-mask:
+    description: A mask written to clear all IRQs on the controller at boot.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  valid-mask:
+    description:
+      A bit mask determining which interrupts are valid; unused lines are set to 0.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  interrupts:
+    maxItems: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - interrupt-controller
+  - '#interrupt-cells'
+  - reg
+  - clear-mask
+  - valid-mask
+
+examples:
+  - |
+    interrupt-controller@14000000 {
+        compatible = "arm,versatile-fpga-irq";
+        #interrupt-cells = <1>;
+        interrupt-controller;
+        reg = <0x14000000 0x100>;
+        clear-mask = <0xffffffff>;
+        valid-mask = <0x003fffff>;
+    };

MAINTAINERS

@@ -1918,7 +1918,7 @@ F:	Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
 F:	Documentation/devicetree/bindings/auxdisplay/arm,versatile-lcd.yaml
 F:	Documentation/devicetree/bindings/clock/arm,syscon-icst.yaml
 F:	Documentation/devicetree/bindings/i2c/arm,i2c-versatile.yaml
-F:	Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt
+F:	Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.yaml
 F:	Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
 F:	arch/arm/boot/dts/arm/arm-realview-*
 F:	arch/arm/boot/dts/arm/integrator*