devicetree: synopsys-dw-mshc-common: add "fifo-access-32bit" property

index 8dfad89c7..2bc5ac528 100644
@@ -57,6 +57,12 @@ properties:
       force fifo watermark setting accordingly.
     $ref: /schemas/types.yaml#/definitions/flag
 
+  fifo-access-32bit:
+    description:
+      Specifies that this device requires accesses to its 64-bit registers
+      to be done as pairs of 32-bit accesses, even on architectures where
+      readq is available.
+
   dmas:
     maxItems: 1