dt-bindings: firmware: imx95-scmi: Allow linux,code for protocol@81

BBM protocol supports a single power button, supported by driver
imx-sm-bbm-key.c. By default this is KEY_POWER, but can also be overwritten
using linux,code. Add a reference to this schema and add linux,code as a
supported property.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi.yaml b/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi.yaml
index 2bda2e0e13693f12816762137e07dc308d2c49e4..7a5a02da271981acaa10f6e6bf4eed6afae365fe 100644 (file)
--- a/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi.yaml
@@ -24,13 +24,19 @@ properties:
         const: 0x80
 
   protocol@81:
-    $ref: '/schemas/firmware/arm,scmi.yaml#/$defs/protocol-node'
-    unevaluatedProperties: false
+    type: object
+    allOf:
+      - $ref: '/schemas/firmware/arm,scmi.yaml#/$defs/protocol-node'
+      - $ref: /schemas/input/input.yaml#
+    additionalProperties: false
 
     properties:
       reg:
         const: 0x81
 
+      linux,code:
+        default: 116  # KEY_POWER
+
   protocol@82:
     description:
       SCMI CPU Protocol which allows an agent to start or stop a CPU. It is