2 * Copyright (c) 2015 Luiz Otavio O Souza <loos@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 #include <sys/param.h>
29 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/socket.h>
33 #include <sys/module.h>
37 #include <machine/bus.h>
39 #include <dev/dwc/if_dwc.h>
40 #include <dev/dwc/if_dwcvar.h>
41 #include <dev/ofw/ofw_bus.h>
42 #include <dev/ofw/ofw_bus_subr.h>
44 #include <arm/allwinner/aw_machdep.h>
45 #include <dev/extres/clk/clk.h>
46 #include <dev/extres/regulator/regulator.h>
48 #include "if_dwc_if.h"
51 a20_if_dwc_probe(device_t dev)
54 if (!ofw_bus_status_okay(dev))
56 if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-gmac"))
58 device_set_desc(dev, "A20 Gigabit Ethernet Controller");
60 return (BUS_PROBE_DEFAULT);
64 a20_if_dwc_init(device_t dev)
67 const char *tx_parent_name;
68 clk_t clk_tx, clk_tx_parent;
72 sc = device_get_softc(dev);
74 /* Configure PHY for MII or RGMII mode */
75 switch(sc->phy_mode) {
77 tx_parent_name = "gmac_int_tx";
80 tx_parent_name = "mii_phy_tx";
83 device_printf(dev, "unsupported PHY connection type: %d",
88 error = clk_get_by_ofw_name(dev, 0, "allwinner_gmac_tx", &clk_tx);
90 device_printf(dev, "could not get tx clk\n");
93 error = clk_get_by_name(dev, tx_parent_name, &clk_tx_parent);
95 device_printf(dev, "could not get clock '%s'\n",
99 error = clk_set_parent_by_clk(clk_tx, clk_tx_parent);
101 device_printf(dev, "could not set tx clk parent\n");
105 /* Enable PHY regulator if applicable */
106 if (regulator_get_by_ofw_property(dev, 0, "phy-supply", ®) == 0) {
107 error = regulator_enable(reg);
109 device_printf(dev, "could not enable PHY regulator\n");
118 a20_if_dwc_mac_type(device_t dev)
121 return (DWC_GMAC_NORMAL_DESC);
125 a20_if_dwc_mii_clk(device_t dev)
128 return (GMAC_MII_CLK_150_250M_DIV102);
131 static device_method_t a20_dwc_methods[] = {
132 DEVMETHOD(device_probe, a20_if_dwc_probe),
134 DEVMETHOD(if_dwc_init, a20_if_dwc_init),
135 DEVMETHOD(if_dwc_mac_type, a20_if_dwc_mac_type),
136 DEVMETHOD(if_dwc_mii_clk, a20_if_dwc_mii_clk),
141 extern driver_t dwc_driver;
143 DEFINE_CLASS_1(dwc, a20_dwc_driver, a20_dwc_methods, sizeof(struct dwc_softc),
145 DRIVER_MODULE(a20_dwc, simplebus, a20_dwc_driver, 0, 0);
147 MODULE_DEPEND(a20_dwc, dwc, 1, 1, 1);