diff --git a/Documentation/devicetree/bindings/sound/fsl,easrc.yaml b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml
index a680d7aff237..0782f3f9947f 100644
--- a/Documentation/devicetree/bindings/sound/fsl,easrc.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml
@@ -51,8 +51,8 @@ properties:
       - const: ctx3_tx
 
   firmware-name:
-    $ref: /schemas/types.yaml#/definitions/string
-    const: imx/easrc/easrc-imx8mn.bin
+    items:
+      - const: imx/easrc/easrc-imx8mn.bin
     description: The coefficient table for the filters
 
   fsl,asrc-rate:
diff --git a/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml b/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml
index 66993d378aaf..5e11ce2c13ac 100644
--- a/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml
+++ b/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml
@@ -51,7 +51,7 @@ properties:
     maxItems: 1
 
   firmware-name:
-    $ref: /schemas/types.yaml#/definitions/string
+    maxItems: 1
     description:
       Filters coefficients file to load. If this property is omitted, internal
       filters are disabled.