have a go at a manpage for dwmshc.

i have a headache, so this isn't very good.

2 files changed, 59 insertions, 2 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index dbbad2b1e39..eee25122b33 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.837 2023/04/02 01:40:52 dlg Exp $
+#	$OpenBSD: Makefile,v 1.838 2023/04/19 00:07:21 dlg Exp $
 
 MAN=	aac.4 abcrtc.4 abl.4 ac97.4 acphy.4 acrtc.4 \
 	acpi.4 acpiac.4 acpials.4 acpiasus.4 acpibat.4 \
@@ -29,7 +29,8 @@ MAN=	aac.4 abcrtc.4 abl.4 ac97.4 acphy.4 acrtc.4 \
 	com.4 cue.4 cwfg.4 cy.4 cz.4 \
 	dapmic.4 \
 	dc.4 dcphy.4 ddb.4 de.4 diskmap.4 divert.4 drm.4 dsxrtc.4 dt.4 \
-	dwctwo.4 dwdog.4 dwge.4 dwgpio.4 dwiic.4 dwmmc.4 dwpcie.4 dwxe.4 \
+	dwctwo.4 dwdog.4 dwge.4 dwgpio.4 dwiic.4 dwmmc.4 dwmshc.4 dwpcie.4 \
+	dwxe.4 \
 	eap.4 ec.4 eephy.4 ef.4 eg.4 ehci.4 eisa.4 el.4 em.4 emc.4 gcu.4 \
 	emu.4 enc.4 endrun.4 envy.4 eoip.4 ep.4 epic.4 esa.4 escodec.4 \
 	eso.4 ess.4 et.4 etherip.4 etphy.4 ex.4 exphy.4 exrtc.4 \
diff --git a/share/man/man4/dwmshc.4 b/share/man/man4/dwmshc.4
new file mode 100644
index 00000000000..04c099d65a3
--- /dev/null
+++ b/share/man/man4/dwmshc.4
@@ -0,0 +1,56 @@
+.\"	$OpenBSD: dwmshc.4,v 1.1 2023/04/19 00:07:21 dlg Exp $
+.\"
+.\" Copyright (c) 2023 David Gwynne <dlg@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 19 2023 $
+.Dt DWMSHC 4
+.Os
+.Sh NAME
+.Nm dwmshc
+.Nd Synopsys DesignWare Mobile Storage Host Controller
+.Sh SYNOPSIS
+.Cd "dwmshc* at fdt?"
+.Cd "sdmmc* at dwmshc?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the Synopsys DesignWare Mobile Storage
+Host Controller core.
+This core is used on the Rockchip RK3566 and RK3568
+.\" and RK3588
+SoCs as the eMMC controller.
+.Pp
+The Synopsys DesignWare Mobile Storage Host Controller core implements
+the SD Host Controller Standard Simplified Specification, but
+requires non-standard support for high clock rates.
+.\" The
+.\" .Nm
+.\" driver is a wrapper around the
+.\" .Xr sdhc 4
+.\" driver.
+.Pp
+The
+.Xr sdmmc 4
+subsystem performs SD/MMC transactions to communicate with the
+MMC/SD/SDIO devices connected to the controller.
+.Sh SEE ALSO
+.Xr intro 4 ,
+.Xr sdhc 4 ,
+.Xr sdmmc 4
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 7.4 .