[PATCH 6/9] ASoC : dt-bindings: sound: Add binding for ABOX IPC Generic

[ew kim <ew.kim@samsung.com>]

This patch updates the existing samsung,exynosauto.yaml schema to
describe the ABOX IPC Generic child node. This node represents
a virtual IPC interface used by the ABOX audio subsystem to
communicate with SoC-specific hardware using shared IRQ channels.

The schema describes the `samsung,num-irq` property and allows
integration of the IPC node under `abox_generic`.

Signed-off-by: ew kim <ew.kim@samsung.com>
---
 .../bindings/sound/samsung,exynosauto.yaml    | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/samsung,exynosauto.yaml b/Documentation/devicetree/bindings/sound/samsung,exynosauto.yaml
index b1e49f38ffe9..3a7b5be627ee 100644
--- a/Documentation/devicetree/bindings/sound/samsung,exynosauto.yaml
+++ b/Documentation/devicetree/bindings/sound/samsung,exynosauto.yaml
@@ -48,6 +48,23 @@ properties:
     description: Required for child nodes that may declare address space.
     const: 1
 
+  abox_ipc_generic:
+    type: object
+    description: ABOX IPC Generic subnode for SoC-level message routing
+    properties:
+      compatible:
+        const: samsung,abox_ipc_generic
+
+      samsung,num-irq:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Number of IRQ channels supported for IPC routing.
+
+    required:
+      - compatible
+      - samsung,num-irq
+
+    additionalProperties: false
+
 required:
   - compatible
   - samsung,num-pcm-playback
@@ -66,4 +83,10 @@ examples:
       status = "disabled";
       #address-cells = <2>;
       #size-cells = <1>;
+
+      abox_ipc_generic {
+        compatible = "samsung,abox_ipc_generic";
+        samsung,num-irq = <64>;
+        status = "disabled";
+      };
     };
-- 
2.25.1