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+.\"	$OpenBSD: aplmca.4,v 1.3 2022/08/06 10:51:30 jsg Exp $
+.\"
+.\" Copyright (c) 2022 Mark Kettenis <kettenis@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: August 6 2022 $
+.Dt APLMCA 4 arm64
+.Os
+.Sh NAME
+.Nm aplmca
+.Nd Apple MCA controller
+.Sh SYNOPSIS
+.Cd "aplmca* at fdt?"
+.Sh DESCRIPTION
+.Nm
+is a driver for the MCA controller integrated on
+various Apple SoCs.
+This controller serializes audio data streams received from the
+.Xr apldma 4
+DMA controller and sends these out as I2S/TDM streams on the audio
+interfaces of the SoCs.
+.Sh SEE ALSO
+.Xr aplaudio 4 ,
+.Xr apldma 4 ,
+.Xr aplnco 4 ,
+.Xr intro 4
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 7.2 .
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Mark Kettenis Aq Mt kettenis@openbsd.org .