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Index: sys/dev/mmc/host/dwmmc_starfive.c
===================================================================
--- /dev/null
+++ sys/dev/mmc/host/dwmmc_starfive.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2017 Emmanuel Vadot <manu@freebsd.org>
+ * Copyright 2021 Mitchell Horne <mhorne@FreeBSD.org>
+ *
+ * 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.
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/module.h>
+#include <sys/queue.h>
+#include <sys/taskqueue.h>
+
+#include <machine/bus.h>
+
+#include <dev/mmc/bridge.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
+
+#include <dev/mmc/host/dwmmc_var.h>
+
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "opt_mmccam.h"
+
+#define SDCARD_FREQ 49500000
+
+static struct ofw_compat_data compat_data[] = {
+ {"starfive,jh7110-mmc", 1},
+ {NULL, 0}
+};
+
+Static int dwmmc_starfive_update_ios(struct dwmmc_softc *sc,
+ struct mmc_ios *ios)
+{
+ int err;
+
+ err = clk_set_freq(sc->ciu, SDCARD_FREQ, CLK_SET_ROUND_DOWN);
+ if (err) {
+ printf("%s, Failed to set freq for ciu clock\n", __func__);
+ return (err);
+ }
+
+ return (0);
+}
+
+static int
+starfive_dwmmc_probe(device_t dev)
+{
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_str == NULL)
+ return (ENXIO);
+
+ device_set_desc(dev, "Synopsys DesignWare Mobile "
+ "Storage Host Controller (StarFive)");
+
+ return (BUS_PROBE_VENDOR);
+}
+
+static int
+starfive_dwmmc_attach(device_t dev)
+{
+
+ struct dwmmc_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->update_ios = &dwmmc_starfive_update_ios;
+
+ return (dwmmc_attach(dev));
+}
+
+static device_method_t starfive_dwmmc_methods[] = {
+ /* bus interface */
+ DEVMETHOD(device_probe, starfive_dwmmc_probe),
+ DEVMETHOD(device_attach, starfive_dwmmc_attach),
+ DEVMETHOD(device_detach, dwmmc_detach),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(starfive_dwmmc, starfive_dwmmc_driver, starfive_dwmmc_methods,
+ sizeof(struct dwmmc_softc), dwmmc_driver);
+
+DRIVER_MODULE(starfive_dwmmc, simplebus, starfive_dwmmc_driver, 0, 0);
+
+#ifndef MMCCAM
+MMC_DECLARE_BRIDGE(starfive_dwmmc);
+#endif

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