Index: share/man/man4/Makefile
===================================================================
--- share/man/man4/Makefile
+++ share/man/man4/Makefile
@@ -73,6 +73,7 @@
 	${_aw_gpio.4} \
 	${_aw_mmc.4} \
 	${_aw_rtc.4} \
+	${_aw_sid.4} \
 	axe.4 \
 	axge.4 \
 	bce.4 \
@@ -763,6 +764,7 @@
 _aw_gpio.4=	aw_gpio.4
 _aw_mmc.4=	aw_mmc.4
 _aw_rtc.4=	aw_rtc.4
+_aw_sid.4=	aw_sid.4
 .endif
 
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
Index: share/man/man4/aw_sid.4
===================================================================
--- /dev/null
+++ share/man/man4/aw_sid.4
@@ -0,0 +1,74 @@
+.\"-
+.\" Copyright (c) 2018 Kyle Evans <kevans@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd January 1, 2018
+.Dt AW_SID 4
+.Os
+.Sh NAME
+.Nm aw_sid
+.Nd driver for the SID controller in Allwinner SoC
+.Sh DESCRIPTION
+The
+.Nm
+device driver provides support for the Allwinner SID (Security ID) controller.
+This controller provides root security keys that may be used as either a device
+unique ID or to generate a MAC address.
+.Sh HARDWARE
+The
+.Nm
+driver supports the SID controller with one of the following compatible
+strings:
+.Pp
+.Bl -bullet -compact
+.It
+allwinner,sun4i-a10-sid
+.It
+allwinner,sun7i-a20-sid
+.It
+allwinner,sun50i-a64-sid
+.It
+allwinner,sun8i-a83t-sid
+.El
+.Sh SYSCTL VARIABLES
+The following read-only variables are available via
+.Xr sysctl 8 :
+.Bl -tag -width indent
+.It Va dev.aw_sid.rootkey
+Root security key for this device.
+.El
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 11.0 .
+.Sh AUTHORS
+The
+.Nm
+device driver was written by
+.An Jared McNeill Aq Mt jmcneill@invisible.ca .
+This manual page was written by
+.An Kyle Evans Aq Mt kevans@FreeBSD.org .