dt-bindings: interrupt-controller: convert bcm2836-l1-intc to yaml

Convert the DT binding document for BCM2836 per-CPU interrupt
controller from .txt to YAML.

Signed-off-by: Stefan Wahren <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Florian Fainelli <[e-mail]>

Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2836-l1-intc.txt

···
-BCM2836 per-CPU interrupt controller
-
-The BCM2836 has a per-cpu interrupt controller for the timer, PMU
-events, and SMP IPIs.  One of the CPUs may receive interrupts for the
-peripheral (GPU) events, which chain to the BCM2835-style interrupt
-controller.
-
-Required properties:
-
-- compatible:	 	Should be "brcm,bcm2836-l1-intc"
-- reg:			Specifies base physical address and size of the
-			  registers
-- interrupt-controller:	Identifies the node as an interrupt controller
-- #interrupt-cells:	Specifies the number of cells needed to encode an
-			  interrupt source. The value shall be 2
-
-Please refer to interrupts.txt in this directory for details of the common
-Interrupt Controllers bindings used by client devices.
-
-The interrupt sources are as follows:
-
-0: CNTPSIRQ
-1: CNTPNSIRQ
-2: CNTHPIRQ
-3: CNTVIRQ
-8: GPU_FAST
-9: PMU_FAST
-
-Example:
-
-local_intc: local_intc {
-	compatible = "brcm,bcm2836-l1-intc";
-	reg = <0x40000000 0x100>;
-	interrupt-controller;
-	#interrupt-cells = <2>;
-	interrupt-parent = <&local_intc>;
-};

Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2836-l1-intc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/brcm,bcm2836-l1-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: BCM2836 per-CPU interrupt controller
+
+maintainers:
+  - Stefan Wahren <[e-mail]>
+  - Raspberry Pi Kernel Maintenance <[e-mail]>
+
+description:
+  The BCM2836 has a per-cpu interrupt controller for the timer, PMU
+  events, and SMP IPIs. One of the CPUs may receive interrupts for the
+  peripheral (GPU) events, which chain to the BCM2835-style interrupt
+  controller.
+
+allOf:
+  - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+  compatible:
+    const: brcm,bcm2836-l1-intc
+
+  reg:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - '#interrupt-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    local_intc: interrupt-controller@40000000 {
+        compatible = "brcm,bcm2836-l1-intc";
+        reg = <0x40000000 0x100>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        interrupt-parent = <&local_intc>;
+    };
+...