2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.Org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
42 #include <machine/bus.h>
45 #include <dev/fdt/simplebus.h>
47 #include <dev/fdt/fdt_common.h>
48 #include <dev/ofw/ofw_bus.h>
49 #include <dev/ofw/ofw_bus_subr.h>
50 #include <dev/ofw/ofw_subr.h>
52 #include <dev/extres/clk/clk.h>
53 #include <dev/extres/hwreset/hwreset.h>
54 #include <dev/extres/phy/phy_usb.h>
55 #include <dev/extres/syscon/syscon.h>
57 static struct ofw_compat_data compat_data[] = {
58 { "rockchip,rk3399-dwc3", 1 },
62 struct rk_dwc3_softc {
63 struct simplebus_softc sc;
75 rk_dwc3_probe(device_t dev)
79 if (!ofw_bus_status_okay(dev))
82 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
85 /* Binding says that we need a child node for the actual dwc3 controller */
86 node = ofw_bus_get_node(dev);
87 if (OF_child(node) <= 0)
90 device_set_desc(dev, "Rockchip RK3399 DWC3");
91 return (BUS_PROBE_DEFAULT);
95 rk_dwc3_attach(device_t dev)
97 struct rk_dwc3_softc *sc;
99 phandle_t node, child;
102 sc = device_get_softc(dev);
104 node = ofw_bus_get_node(dev);
106 /* Mandatory clocks */
107 if (clk_get_by_ofw_name(dev, 0, "ref_clk", &sc->clk_ref) != 0) {
108 device_printf(dev, "Cannot get ref_clk clock\n");
111 err = clk_enable(sc->clk_ref);
113 device_printf(dev, "Could not enable clock %s\n",
114 clk_get_name(sc->clk_ref));
117 if (clk_get_by_ofw_name(dev, 0, "suspend_clk", &sc->clk_suspend) != 0) {
118 device_printf(dev, "Cannot get suspend_clk clock\n");
121 err = clk_enable(sc->clk_suspend);
123 device_printf(dev, "Could not enable clock %s\n",
124 clk_get_name(sc->clk_suspend));
127 if (clk_get_by_ofw_name(dev, 0, "bus_clk", &sc->clk_bus) != 0) {
128 device_printf(dev, "Cannot get bus_clk clock\n");
131 err = clk_enable(sc->clk_bus);
133 device_printf(dev, "Could not enable clock %s\n",
134 clk_get_name(sc->clk_bus));
137 if (clk_get_by_ofw_name(dev, 0, "grf_clk", &sc->clk_grf) != 0) {
138 device_printf(dev, "Cannot get grf_clk clock\n");
141 err = clk_enable(sc->clk_grf);
143 device_printf(dev, "Could not enable clock %s\n",
144 clk_get_name(sc->clk_grf));
148 /* Optional clocks */
149 if (clk_get_by_ofw_name(dev, 0, "aclk_usb3_rksoc_axi_perf", &sc->clk_axi_perf) == 0) {
150 err = clk_enable(sc->clk_axi_perf);
152 device_printf(dev, "Could not enable clock %s\n",
153 clk_get_name(sc->clk_axi_perf));
157 if (clk_get_by_ofw_name(dev, 0, "aclk_usb3", &sc->clk_usb3) == 0) {
158 err = clk_enable(sc->clk_usb3);
160 device_printf(dev, "Could not enable clock %s\n",
161 clk_get_name(sc->clk_usb3));
166 /* Put module out of reset */
167 if (hwreset_get_by_ofw_name(dev, node, "usb3-otg", &sc->rst_usb3) == 0) {
168 if (hwreset_deassert(sc->rst_usb3) != 0) {
169 device_printf(dev, "Cannot deassert reset\n");
174 simplebus_init(dev, node);
175 if (simplebus_fill_ranges(node, &sc->sc) < 0) {
176 device_printf(dev, "could not get ranges\n");
180 for (child = OF_child(node); child > 0; child = OF_peer(child)) {
181 cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
183 device_probe_and_attach(cdev);
186 return (bus_generic_attach(dev));
189 static device_method_t rk_dwc3_methods[] = {
190 /* Device interface */
191 DEVMETHOD(device_probe, rk_dwc3_probe),
192 DEVMETHOD(device_attach, rk_dwc3_attach),
197 static devclass_t rk_dwc3_devclass;
199 DEFINE_CLASS_1(rk_dwc3, rk_dwc3_driver, rk_dwc3_methods,
200 sizeof(struct rk_dwc3_softc), simplebus_driver);
201 DRIVER_MODULE(rk_dwc3, simplebus, rk_dwc3_driver, rk_dwc3_devclass, 0, 0);