imx6_usbphy.c revision 1.1.2.2
1 1.1.2.2 thorpej /* $NetBSD: imx6_usbphy.c,v 1.1.2.2 2021/01/03 16:34:52 thorpej Exp $ */ 2 1.1.2.2 thorpej 3 1.1.2.2 thorpej /*- 4 1.1.2.2 thorpej * Copyright (c) 2019 Genetec Corporation. All rights reserved. 5 1.1.2.2 thorpej * Written by Hashimoto Kenichi for Genetec Corporation. 6 1.1.2.2 thorpej * 7 1.1.2.2 thorpej * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 thorpej * modification, are permitted provided that the following conditions 9 1.1.2.2 thorpej * are met: 10 1.1.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 thorpej * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 thorpej * documentation and/or other materials provided with the distribution. 15 1.1.2.2 thorpej * 16 1.1.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1.2.2 thorpej * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1.2.2 thorpej * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1.2.2 thorpej * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1.2.2 thorpej * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.1.2.2 thorpej * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.1.2.2 thorpej * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.1.2.2 thorpej * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.1.2.2 thorpej * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 thorpej * SUCH DAMAGE. 27 1.1.2.2 thorpej */ 28 1.1.2.2 thorpej 29 1.1.2.2 thorpej #include <sys/cdefs.h> 30 1.1.2.2 thorpej __KERNEL_RCSID(1, "$NetBSD: imx6_usbphy.c,v 1.1.2.2 2021/01/03 16:34:52 thorpej Exp $"); 31 1.1.2.2 thorpej 32 1.1.2.2 thorpej #include "opt_fdt.h" 33 1.1.2.2 thorpej 34 1.1.2.2 thorpej #include "locators.h" 35 1.1.2.2 thorpej #include "ohci.h" 36 1.1.2.2 thorpej #include "ehci.h" 37 1.1.2.2 thorpej 38 1.1.2.2 thorpej #include <sys/param.h> 39 1.1.2.2 thorpej #include <sys/bus.h> 40 1.1.2.2 thorpej #include <sys/device.h> 41 1.1.2.2 thorpej 42 1.1.2.2 thorpej #include <arm/nxp/imx6_usbphyreg.h> 43 1.1.2.2 thorpej 44 1.1.2.2 thorpej #include <dev/fdt/fdtvar.h> 45 1.1.2.2 thorpej 46 1.1.2.2 thorpej struct imx6_usbphy_softc { 47 1.1.2.2 thorpej device_t sc_dev; 48 1.1.2.2 thorpej 49 1.1.2.2 thorpej bus_space_tag_t sc_iot; 50 1.1.2.2 thorpej bus_space_handle_t sc_ioh; 51 1.1.2.2 thorpej 52 1.1.2.2 thorpej struct clk *sc_clk; 53 1.1.2.2 thorpej }; 54 1.1.2.2 thorpej 55 1.1.2.2 thorpej static int imx6_usbphy_match(device_t, cfdata_t, void *); 56 1.1.2.2 thorpej static void imx6_usbphy_attach(device_t, device_t, void *); 57 1.1.2.2 thorpej 58 1.1.2.2 thorpej static int imx6_usbphy_init_clocks(device_t); 59 1.1.2.2 thorpej static int imx6_usbphy_enable(device_t, void *, bool); 60 1.1.2.2 thorpej 61 1.1.2.2 thorpej CFATTACH_DECL_NEW(imxusbphy, sizeof(struct imx6_usbphy_softc), 62 1.1.2.2 thorpej imx6_usbphy_match, imx6_usbphy_attach, NULL, NULL); 63 1.1.2.2 thorpej 64 1.1.2.2 thorpej static const char * const compatible[] = { 65 1.1.2.2 thorpej "fsl,imx6q-usbphy", 66 1.1.2.2 thorpej NULL 67 1.1.2.2 thorpej }; 68 1.1.2.2 thorpej 69 1.1.2.2 thorpej static int 70 1.1.2.2 thorpej imx6_usbphy_match(device_t parent, cfdata_t cf, void *aux) 71 1.1.2.2 thorpej { 72 1.1.2.2 thorpej struct fdt_attach_args * const faa = aux; 73 1.1.2.2 thorpej 74 1.1.2.2 thorpej return of_match_compatible(faa->faa_phandle, compatible); 75 1.1.2.2 thorpej } 76 1.1.2.2 thorpej 77 1.1.2.2 thorpej static void 78 1.1.2.2 thorpej imx6_usbphy_attach(device_t parent, device_t self, void *aux) 79 1.1.2.2 thorpej { 80 1.1.2.2 thorpej struct imx6_usbphy_softc *sc = device_private(self); 81 1.1.2.2 thorpej struct fdt_attach_args * const faa = aux; 82 1.1.2.2 thorpej const int phandle = faa->faa_phandle; 83 1.1.2.2 thorpej bus_space_tag_t bst = faa->faa_bst; 84 1.1.2.2 thorpej bus_space_handle_t bsh; 85 1.1.2.2 thorpej bus_addr_t addr; 86 1.1.2.2 thorpej bus_size_t size; 87 1.1.2.2 thorpej int error; 88 1.1.2.2 thorpej 89 1.1.2.2 thorpej if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 90 1.1.2.2 thorpej aprint_error(": couldn't get iomux registers\n"); 91 1.1.2.2 thorpej return; 92 1.1.2.2 thorpej } 93 1.1.2.2 thorpej 94 1.1.2.2 thorpej error = bus_space_map(bst, addr, size, 0, &bsh); 95 1.1.2.2 thorpej if (error) { 96 1.1.2.2 thorpej aprint_error(": couldn't map %#" PRIxBUSADDR ": %d", addr, error); 97 1.1.2.2 thorpej return; 98 1.1.2.2 thorpej } 99 1.1.2.2 thorpej 100 1.1.2.2 thorpej sc->sc_clk = fdtbus_clock_get_index(phandle, 0); 101 1.1.2.2 thorpej if (sc->sc_clk == NULL) { 102 1.1.2.2 thorpej aprint_error(": couldn't get clock\n"); 103 1.1.2.2 thorpej return; 104 1.1.2.2 thorpej } 105 1.1.2.2 thorpej 106 1.1.2.2 thorpej sc->sc_dev = self; 107 1.1.2.2 thorpej sc->sc_iot = bst; 108 1.1.2.2 thorpej sc->sc_ioh = bsh; 109 1.1.2.2 thorpej 110 1.1.2.2 thorpej aprint_naive("\n"); 111 1.1.2.2 thorpej aprint_normal(": USB PHY\n"); 112 1.1.2.2 thorpej 113 1.1.2.2 thorpej imx6_usbphy_init_clocks(self); 114 1.1.2.2 thorpej imx6_usbphy_enable(self, NULL, true); 115 1.1.2.2 thorpej } 116 1.1.2.2 thorpej 117 1.1.2.2 thorpej static int 118 1.1.2.2 thorpej imx6_usbphy_init_clocks(device_t dev) 119 1.1.2.2 thorpej { 120 1.1.2.2 thorpej struct imx6_usbphy_softc * const sc = device_private(dev); 121 1.1.2.2 thorpej int error; 122 1.1.2.2 thorpej 123 1.1.2.2 thorpej error = clk_enable(sc->sc_clk); 124 1.1.2.2 thorpej if (error) { 125 1.1.2.2 thorpej aprint_error_dev(sc->sc_dev, "couldn't enable: %d\n", error); 126 1.1.2.2 thorpej return error; 127 1.1.2.2 thorpej } 128 1.1.2.2 thorpej 129 1.1.2.2 thorpej return 0; 130 1.1.2.2 thorpej } 131 1.1.2.2 thorpej 132 1.1.2.2 thorpej #define USBPHY_READ(sc, reg) \ 133 1.1.2.2 thorpej bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg)) 134 1.1.2.2 thorpej #define USBPHY_WRITE(sc, reg, val) \ 135 1.1.2.2 thorpej bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) 136 1.1.2.2 thorpej 137 1.1.2.2 thorpej static int 138 1.1.2.2 thorpej imx6_usbphy_enable(device_t dev, void *priv, bool enable) 139 1.1.2.2 thorpej { 140 1.1.2.2 thorpej struct imx6_usbphy_softc * const sc = device_private(dev); 141 1.1.2.2 thorpej 142 1.1.2.2 thorpej /* USBPHY enable */ 143 1.1.2.2 thorpej USBPHY_WRITE(sc, USBPHY_CTRL, USBPHY_CTRL_CLKGATE); 144 1.1.2.2 thorpej 145 1.1.2.2 thorpej /* do reset */ 146 1.1.2.2 thorpej USBPHY_WRITE(sc, USBPHY_CTRL_SET, USBPHY_CTRL_SFTRST); 147 1.1.2.2 thorpej delay(100); 148 1.1.2.2 thorpej 149 1.1.2.2 thorpej /* clear reset, and run clocks */ 150 1.1.2.2 thorpej USBPHY_WRITE(sc, USBPHY_CTRL_CLR, 151 1.1.2.2 thorpej USBPHY_CTRL_SFTRST | USBPHY_CTRL_CLKGATE); 152 1.1.2.2 thorpej delay(100); 153 1.1.2.2 thorpej 154 1.1.2.2 thorpej /* power on */ 155 1.1.2.2 thorpej USBPHY_WRITE(sc, USBPHY_PWD, 0); 156 1.1.2.2 thorpej 157 1.1.2.2 thorpej /* UTMI+Level2, Level3 */ 158 1.1.2.2 thorpej USBPHY_WRITE(sc, USBPHY_CTRL_SET, 159 1.1.2.2 thorpej USBPHY_CTRL_ENUTMILEVEL2 | USBPHY_CTRL_ENUTMILEVEL3); 160 1.1.2.2 thorpej 161 1.1.2.2 thorpej return 0; 162 1.1.2.2 thorpej } 163 1.1.2.2 thorpej 164
Indexes created Wed Oct 01 19:09:53 GMT 2025