2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2018 Emmanuel Vadot <manu@freebsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
38 #include <machine/bus.h>
40 #include <dev/dwc/if_dwc.h>
41 #include <dev/dwc/if_dwcvar.h>
42 #include <dev/ofw/ofw_bus.h>
43 #include <dev/ofw/ofw_bus_subr.h>
45 #include <dev/extres/clk/clk.h>
46 #include <dev/extres/regulator/regulator.h>
48 #include <dev/extres/syscon/syscon.h>
50 #include "syscon_if.h"
52 #include "if_dwc_if.h"
54 #define RK3328_GRF_MAC_CON0 0x0900
55 #define RK3328_GRF_MAC_CON0_TX_MASK 0x7F
56 #define RK3328_GRF_MAC_CON0_TX_SHIFT 0
57 #define RK3328_GRF_MAC_CON0_RX_MASK 0x7F
58 #define RK3328_GRF_MAC_CON0_RX_SHIFT 7
60 #define RK3328_GRF_MAC_CON1 0x0904
61 #define RK3328_GRF_MAC_CON2 0x0908
62 #define RK3328_GRF_MACPHY_CON0 0x0B00
63 #define RK3328_GRF_MACPHY_CON1 0x0B04
64 #define RK3328_GRF_MACPHY_CON2 0x0B08
65 #define RK3328_GRF_MACPHY_CON3 0x0B0C
66 #define RK3328_GRF_MACPHY_STATUS 0x0B10
69 rk3328_set_delays(struct syscon *grf, phandle_t node)
73 if (OF_getencprop(node, "tx_delay", &tx, sizeof(tx)) <= 0)
75 if (OF_getencprop(node, "rx_delay", &rx, sizeof(rx)) <= 0)
78 tx = ((tx & RK3328_GRF_MAC_CON0_TX_MASK) <<
79 RK3328_GRF_MAC_CON0_TX_SHIFT);
80 rx = ((rx & RK3328_GRF_MAC_CON0_TX_MASK) <<
81 RK3328_GRF_MAC_CON0_RX_SHIFT);
83 /* Disable delays as values conflict between DTS */
84 /* SYSCON_WRITE_4(grf, RK3328_GRF_MAC_CON0, tx | rx | 0xFFFF0000); */
88 if_dwc_rk_probe(device_t dev)
91 if (!ofw_bus_status_okay(dev))
93 if (!ofw_bus_is_compatible(dev, "rockchip,rk3328-gmac"))
95 device_set_desc(dev, "Rockchip Gigabit Ethernet Controller");
97 return (BUS_PROBE_DEFAULT);
101 if_dwc_rk_init(device_t dev)
104 struct syscon *grf = NULL;
106 node = ofw_bus_get_node(dev);
107 if (OF_hasprop(node, "rockchip,grf") &&
108 syscon_get_by_ofw_property(dev, node,
109 "rockchip,grf", &grf) != 0) {
110 device_printf(dev, "cannot get grf driver handle\n");
114 rk3328_set_delays(grf, node);
116 /* Mode should be set according to dtb property */
122 if_dwc_rk_mac_type(device_t dev)
125 return (DWC_GMAC_ALT_DESC);
129 if_dwc_rk_mii_clk(device_t dev)
132 /* Should be calculated from the clock */
133 return (GMAC_MII_CLK_150_250M_DIV102);
136 static device_method_t if_dwc_rk_methods[] = {
137 DEVMETHOD(device_probe, if_dwc_rk_probe),
139 DEVMETHOD(if_dwc_init, if_dwc_rk_init),
140 DEVMETHOD(if_dwc_mac_type, if_dwc_rk_mac_type),
141 DEVMETHOD(if_dwc_mii_clk, if_dwc_rk_mii_clk),
146 static devclass_t dwc_rk_devclass;
148 extern driver_t dwc_driver;
150 DEFINE_CLASS_1(dwc, dwc_rk_driver, if_dwc_rk_methods,
151 sizeof(struct dwc_softc), dwc_driver);
152 DRIVER_MODULE(dwc_rk, simplebus, dwc_rk_driver, dwc_rk_devclass, 0, 0);
153 MODULE_DEPEND(dwc_rk, dwc, 1, 1, 1);