diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 6fe648be052..089f4202455 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.875 2026/01/29 23:03:02 kettenis Exp $
+#	$OpenBSD: Makefile,v 1.876 2026/04/13 01:05:49 jsg Exp $
 
 MAN=	aac.4 abcrtc.4 abl.4 ac97.4 acphy.4 acrtc.4 \
 	acpi.4 acpiac.4 acpials.4 acpiasus.4 acpibat.4 \
@@ -51,7 +51,7 @@ MAN=	aac.4 abcrtc.4 abl.4 ac97.4 acphy.4 acrtc.4 \
 	imxpwm.4 imxrtc.4 imxspi.4 imxsrc.4 imxtmu.4 imxuart.4 \
 	inet.4 inet6.4 inphy.4 intelpmc.4 inthid.4 \
 	iophy.4 iosf.4 ip.4 ip6.4 ipcomp.4 ipgphy.4 \
-	ipmi.4 ips.4 ipsec.4 ipw.4 isa.4 isagpio.4 isapnp.4 islrtc.4 \
+	ipmi.4 ips.4 ipsec.4 ipw.4 isa.4 isagpio.4 isapnp.4 islrtc.4 ispi.4 \
 	it.4 itherm.4 iwi.4 iwn.4 iwm.4 iwx.4 ix.4 ixv.4 ixgb.4 ixl.4 \
 	jmb.4 jme.4 jmphy.4 \
 	kate.4 kcov.4 km.4 ksmn.4 kstat.4 ksyms.4 kubsan.4 kue.4 \
diff --git a/share/man/man4/ispi.4 b/share/man/man4/ispi.4
new file mode 100644
index 00000000000..e271aaf1a13
--- /dev/null
+++ b/share/man/man4/ispi.4
@@ -0,0 +1,38 @@
+.\"	$OpenBSD: ispi.4,v 1.1 2026/04/13 01:05:49 jsg Exp $
+.\"
+.\" Copyright (c) 2026 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 $Mdocdate: April 13 2026 $
+.Dt ISPI 4
+.Os
+.Sh NAME
+.Nm ispi
+.Nd Intel LPSS SPI controller
+.Sh SYNOPSIS
+.Cd "ispi* at acpi?"
+.Cd "ispi* at pci?"
+.Sh DESCRIPTION
+The
+.Nm
+driver supports the Serial Peripheral Interface (SPI) controller
+included in the Intel Low-Power Subsystem (LPSS).
+.Sh SEE ALSO
+.Xr acpi 4 ,
+.Xr pci 4
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Ox 7.9 .