--- zzzz-none-000/linux-4.9.231/Documentation/devicetree/bindings/reserved-memory/ramoops.txt	2020-07-22 07:10:54.000000000 +0000
+++ falcon-5590-729/linux-4.9.231/Documentation/devicetree/bindings/reserved-memory/ramoops.txt	2022-03-30 12:03:33.000000000 +0000
@@ -39,7 +39,11 @@
 - ftrace-size: size in bytes of log buffer reserved for function tracing and
   profiling (defaults to 0: disabled)
 
-- pmsg-size: size in bytes of log buffer reserved for userspace messages
+- pmsg-size: array of value that are used to size in bytes of log buffer
+  reserved for userspace messages.
+
+       pmsg-size = <0x10000 0x10000>;
+
   (defaults to 0: disabled)
 
 - unbuffered: if present, use unbuffered mappings to map the reserved region