diff --git a/share/man/man4/jmphy.4 b/share/man/man4/jmphy.4
new file mode 100644
index 000000000000..d3c5d80e459c
--- /dev/null
+++ b/share/man/man4/jmphy.4
@@ -0,0 +1,61 @@
+.\"	$NetBSD: jmphy.4,v 1.1 2019/10/30 13:32:32 msaitoh Exp $
+.\"	$openbsd: jmphy.4,v 1.2 2013/07/16 16:05:49 schwarze Exp $
+.\"
+.\" Copyright (c) 2008 Jonathan Gray <jsg@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd October 30 2019
+.Dt JMPHY 4
+.Os
+.Sh NAME
+.Nm jmphy
+.Nd JMicron JMP202/JMP211 10/100/Gigabit Ethernet PHY
+.Sh SYNOPSIS
+.Cd "jmphy* at mii?"
+.Sh DESCRIPTION
+The
+.Nm
+driver supports the JMicron JMP202 10/100 and
+JMP211 10/100/Gigabit Ethernet PHYs.
+.Sh SEE ALSO
+.Xr ifmedia 4 ,
+.Xr intro 4 ,
+.Xr jme 4 ,
+.Xr mii 4 ,
+.Xr ifconfig 8
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Ox 4.5 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Pyun YongHyeon
+for
+.Fx
+and ported to
+.Ox
+by
+.An Jonathan Gray Aq Mt jsg@openbsd.org
+and then ported to
+.Nx 9.0
+by
+.An Masanobu SAITOH.
+.Sh BUGS
+It the media is set to gigabit speed, it may not linkup or takes very log time
+to go link up.
+It depends on the link partnet.