diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e9159eb986ec..a74d62f4c821 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1009,6 +1009,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			earlyprintk=serial[,0x...[,baudrate]]
 			earlyprintk=ttySn[,baudrate]
 			earlyprintk=dbgp[debugController#]
+			earlyprintk=pciserial,bus:device.function[,baudrate]
 
 			earlyprintk is useful when the kernel crashes before
 			the normal console is initialized. It is not enabled by