[PATCH V3 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support

["Peng Fan (OSS)" <peng.fan@oss.nxp.com>]

From: Peng Fan <peng.fan@nxp.com>

Similar to i.MX8ULP S4 MU, i.MX93 MU is dedicated for communication
between Sentinel and Cortex-A cores from hardware design, it could not be
reused for other purpose.

However i.MX93 S4 MU use separate tx/rx interrupt, so update
interrupts and add interrupt-names property.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../devicetree/bindings/mailbox/fsl,mu.yaml   | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index 6d056d5e16bf..f0a7e693ebf8 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -29,6 +29,7 @@ properties:
       - const: fsl,imx8ulp-mu
       - const: fsl,imx8-mu-scu
       - const: fsl,imx8-mu-seco
+      - const: fsl,imx93-mu-s4
       - const: fsl,imx8ulp-mu-s4
       - items:
           - const: fsl,imx93-mu
@@ -57,6 +58,12 @@ properties:
   interrupts:
     maxItems: 1
 
+  interrupt-names:
+    minItems: 1
+    items:
+      - const: txirq
+      - const: rxirq
+
   "#mbox-cells":
     description: |
       <&phandle type channel>
@@ -90,6 +97,20 @@ required:
   - interrupts
   - "#mbox-cells"
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          enum:
+            - fsl,imx93-mu-s4
+    then:
+      properties:
+        interrupt-names:
+          minItems: 2
+          maxItems: 2
+        interrupts:
+          maxItems: 2
+
 additionalProperties: false
 
 examples:
-- 
2.25.1