diff --git a/sys/dev/iicbus/iicoc_fdt.c b/sys/dev/iicbus/iicoc_fdt.c
index 699a1738f53b..052174a91134 100644
--- a/sys/dev/iicbus/iicoc_fdt.c
+++ b/sys/dev/iicbus/iicoc_fdt.c
@@ -1,188 +1,191 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
  *
  * Copyright (c) 2019 Axiado Corporation.
  * All rights reserved.
  *
  * This software was developed in part by Philip Paeps under contract for
  * Axiado Corporation.
  *
  * 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/limits.h>
 #include <sys/module.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
 #include <sys/mutex.h>
 #include <sys/rman.h>
 
 #include <dev/extres/clk/clk.h>
 
 #include <dev/iicbus/iicbus.h>
 #include <dev/iicbus/iiconf.h>
 
 #include <dev/ofw/ofw_bus.h>
 #include <dev/ofw/ofw_bus_subr.h>
 
 #include "iicbus_if.h"
 #include "iicoc.h"
 
 static struct ofw_compat_data compat_data[] = {
 	{ "opencores,i2c-ocores",	1 },
+	{ "sifive,fu740-c000-i2c",	1 },
+	{ "sifive,fu540-c000-i2c",	1 },
+	{ "sifive,i2c0",		1 },
 	{ NULL,				0 }
 };
 
 static struct resource_spec iicoc_spec[] = {
 	{ SYS_RES_MEMORY, 0, RF_ACTIVE },
 	RESOURCE_SPEC_END
 };
 
 static phandle_t
 iicoc_get_node(device_t bus, device_t dev)
 {
 
 	/* Share controller node with iicbus device. */
 	return (ofw_bus_get_node(bus));
 }
 
 static int
 iicoc_attach(device_t dev)
 {
 	struct iicoc_softc *sc;
 	phandle_t node;
 	clk_t clock;
 	uint64_t clockfreq;
 	int error;
 
 	sc = device_get_softc(dev);
 	sc->dev = dev;
 
 	mtx_init(&sc->sc_mtx, "iicoc", "iicoc", MTX_DEF);
 
 	error = bus_alloc_resources(dev, iicoc_spec, &sc->mem_res);
 	if (error) {
 		device_printf(dev, "Could not allocate bus resource.\n");
 		goto fail;
 	}
 
 	node = ofw_bus_get_node(dev);
 	sc->reg_shift = 0;
 	OF_getencprop(node, "reg-shift", &sc->reg_shift,
 	    sizeof(sc->reg_shift));
 
 	error = clk_get_by_ofw_index(dev, 0, 0, &clock);
 	if (error) {
 		device_printf(dev, "Couldn't get clock\n");
 		goto fail;
 	}
 	error = clk_enable(clock);
 	if (error) {
 		device_printf(dev, "Couldn't enable clock\n");
 		goto fail1;
 	}
 	error = clk_get_freq(clock, &clockfreq);
 	if (error) {
 		device_printf(dev, "Couldn't get clock frequency\n");
 		goto fail1;
 	}
 	if (clockfreq > UINT_MAX) {
 		device_printf(dev, "Unsupported clock frequency\n");
 		goto fail1;
 	}
 	sc->clockfreq = (u_int)clockfreq;
 	sc->i2cfreq = XLP_I2C_FREQ;
 	iicoc_init(dev);
 
 	sc->iicbus = device_add_child(dev, "iicbus", -1);
 	if (sc->iicbus == NULL) {
 		device_printf(dev, "Could not allocate iicbus instance.\n");
 		error = ENXIO;
 		goto fail1;
 	}
 
 	/* Probe and attach the iicbus when interrupts are available. */
 	config_intrhook_oneshot((ich_func_t)bus_generic_attach, dev);
 
 	return (0);
 
 fail1:
 	clk_disable(clock);
 
 fail:
 	bus_release_resources(dev, iicoc_spec, &sc->mem_res);
 	mtx_destroy(&sc->sc_mtx);
 	return (error);
 }
 
 static int
 iicoc_probe(device_t dev)
 {
 
 	if (!ofw_bus_status_okay(dev))
 		return (ENXIO);
 
 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
 		return (ENXIO);
 
 	device_set_desc(dev, "OpenCores I2C master controller");
 
 	return (BUS_PROBE_DEFAULT);
 }
 
 static device_method_t iicoc_methods[] = {
 	/* device interface */
 	DEVMETHOD(device_probe, iicoc_probe),
 	DEVMETHOD(device_attach, iicoc_attach),
 
 	/* ofw interface */
 	DEVMETHOD(ofw_bus_get_node, iicoc_get_node),
 
 	/* iicbus interface */
 	DEVMETHOD(iicbus_callback, iicbus_null_callback),
 	DEVMETHOD(iicbus_repeated_start, iicoc_iicbus_repeated_start),
 	DEVMETHOD(iicbus_start, iicoc_iicbus_start),
 	DEVMETHOD(iicbus_stop, iicoc_iicbus_stop),
 	DEVMETHOD(iicbus_reset, iicoc_iicbus_reset),
 	DEVMETHOD(iicbus_write, iicoc_iicbus_write),
 	DEVMETHOD(iicbus_read, iicoc_iicbus_read),
 	DEVMETHOD(iicbus_transfer, iicbus_transfer_gen),
 
 	DEVMETHOD_END
 };
 
 static driver_t iicoc_driver = {
 	"iicoc",
 	iicoc_methods,
 	sizeof(struct iicoc_softc),
 };
 
 DRIVER_MODULE(iicoc, simplebus, iicoc_driver, iicoc_devclass, 0, 0);
 DRIVER_MODULE(ofw_iicbus, iicoc, ofw_iicbus_driver, ofw_iicbus_devclass, 0, 0);
 MODULE_DEPEND(iicoc, iicbus, 1, 1, 1);
 MODULE_DEPEND(iicoc, ofw_iicbus, 1, 1, 1);