mtkswitch.4: Initial manual page

Add a stub manual only saying what it is, how to include it, what is
supported, and since when. This plugs the mtkswitch driver into the
manual subsystem and the release hardware notes.

MFC to:			14.3
MFC after:		3 days
Reviewed by:		adrian, carlavilla
Approved by:		carlavilla (mentor)
Differential Revision:	https://reviews.freebsd.org/D50412

2 files changed, 46 insertions, 0 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 2f997c68c55a..ed39aafebbc3 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -341,6 +341,7 @@ MAN=	aac.4 \
 	msdosfs.4 \
 	msk.4 \
 	mtio.4 \
+	mtkswitch.4 \
 	multicast.4 \
 	muge.4 \
 	mvs.4 \
diff --git a/share/man/man4/mtkswitch.4 b/share/man/man4/mtkswitch.4
new file mode 100644
index 000000000000..c879df161791
--- /dev/null
+++ b/share/man/man4/mtkswitch.4
@@ -0,0 +1,45 @@
+.\"
+.\" Copyright (c) 2025 Alexander Ziaee
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd May 19, 2025
+.Dt MTKSWITCH 4
+.Sh NAME
+.Nm mtkswitch
+.Nd MediaTek/Ralink Ethernet switch driver
+.Sh SYNOPSIS
+.Cd device mdio
+.Cd device etherswitch
+.Cd device mtkswitch
+.Sh DESCRIPTION
+The
+.Nm
+driver supports MediaTek/Ralink Ethernet switch controllers.
+.Sh HARDWARE
+The
+.Nm
+driver supports the following Ethernet switch controllers:
+.Pp
+.Bl -bullet -compact
+.It
+MediaTek MT7628 (5 port Fast Ethernet)
+.It
+MediaTek MT7621 (5 port Gigabit Ethernet)
+.It
+MediaTek MT7620 (5 port Fast Ethernet)
+.It
+Ralink RT5350 (5 port Fast Ethernet)
+.It
+Ralink RT3352 (5 port Fast Ethernet)
+.It
+Ralink RT3050 (5 port Fast Ethernet)
+.El
+.Sh SEE ALSO
+.Xr etherswitch 4 ,
+.Xr etherswitchcfg 8
+.Sh HISTORY
+The
+.Nm
+driver appeared in
+.Fx 11.0 .