1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013-2014 Ruslan Bukin <br@bsdpad.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 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 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * Vybrid Family Analog components control digital interface (ANADIG) 31 * Chapter 11, Vybrid Reference Manual, Rev. 5, 07/2013 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/bus.h> 40 #include <sys/kernel.h> 41 #include <sys/module.h> 42 #include <sys/malloc.h> 43 #include <sys/rman.h> 44 #include <sys/timeet.h> 45 #include <sys/timetc.h> 46 #include <sys/watchdog.h> 47 48 #include <dev/ofw/openfirm.h> 49 #include <dev/ofw/ofw_bus.h> 50 #include <dev/ofw/ofw_bus_subr.h> 51 52 #include <machine/bus.h> 53 #include <machine/cpu.h> 54 #include <machine/intr.h> 55 56 #include <arm/freescale/vybrid/vf_common.h> 57 58 #define ANADIG_PLL3_CTRL 0x010 /* PLL3 Control */ 59 #define ANADIG_PLL7_CTRL 0x020 /* PLL7 Control */ 60 #define ANADIG_PLL2_CTRL 0x030 /* PLL2 Control */ 61 #define ANADIG_PLL2_SS 0x040 /* PLL2 Spread Spectrum */ 62 #define ANADIG_PLL2_NUM 0x050 /* PLL2 Numerator */ 63 #define ANADIG_PLL2_DENOM 0x060 /* PLL2 Denominator */ 64 #define ANADIG_PLL4_CTRL 0x070 /* PLL4 Control */ 65 #define ANADIG_PLL4_NUM 0x080 /* PLL4 Numerator */ 66 #define ANADIG_PLL4_DENOM 0x090 /* PLL4 Denominator */ 67 #define ANADIG_PLL6_CTRL 0x0A0 /* PLL6 Control */ 68 #define ANADIG_PLL6_NUM 0x0B0 /* PLL6 Numerator */ 69 #define ANADIG_PLL6_DENOM 0x0C0 /* PLL6 Denominator */ 70 #define ANADIG_PLL5_CTRL 0x0E0 /* PLL5 Control */ 71 #define ANADIG_PLL3_PFD 0x0F0 /* PLL3 PFD */ 72 #define ANADIG_PLL2_PFD 0x100 /* PLL2 PFD */ 73 #define ANADIG_REG_1P1 0x110 /* Regulator 1P1 */ 74 #define ANADIG_REG_3P0 0x120 /* Regulator 3P0 */ 75 #define ANADIG_REG_2P5 0x130 /* Regulator 2P5 */ 76 #define ANADIG_ANA_MISC0 0x150 /* Analog Miscellaneous */ 77 #define ANADIG_ANA_MISC1 0x160 /* Analog Miscellaneous */ 78 #define ANADIG_ANADIG_DIGPROG 0x260 /* Digital Program */ 79 #define ANADIG_PLL1_CTRL 0x270 /* PLL1 Control */ 80 #define ANADIG_PLL1_SS 0x280 /* PLL1 Spread Spectrum */ 81 #define ANADIG_PLL1_NUM 0x290 /* PLL1 Numerator */ 82 #define ANADIG_PLL1_DENOM 0x2A0 /* PLL1 Denominator */ 83 #define ANADIG_PLL1_PFD 0x2B0 /* PLL1_PFD */ 84 #define ANADIG_PLL_LOCK 0x2C0 /* PLL Lock */ 85 86 #define USB_VBUS_DETECT(n) (0x1A0 + 0x60 * n) 87 #define USB_CHRG_DETECT(n) (0x1B0 + 0x60 * n) 88 #define USB_VBUS_DETECT_STATUS(n) (0x1C0 + 0x60 * n) 89 #define USB_CHRG_DETECT_STATUS(n) (0x1D0 + 0x60 * n) 90 #define USB_LOOPBACK(n) (0x1E0 + 0x60 * n) 91 #define USB_MISC(n) (0x1F0 + 0x60 * n) 92 93 #define ANADIG_PLL_LOCKED (1U << 31) 94 #define ENABLE_LINREG (1 << 0) 95 #define EN_CLK_TO_UTMI (1 << 30) 96 97 #define CTRL_BYPASS (1 << 16) 98 #define CTRL_PWR (1 << 12) 99 #define CTRL_PLL_EN (1 << 13) 100 #define EN_USB_CLKS (1 << 6) 101 102 #define PLL4_CTRL_DIV_SEL_S 0 103 #define PLL4_CTRL_DIV_SEL_M 0x7f 104 105 struct anadig_softc { 106 struct resource *res[1]; 107 bus_space_tag_t bst; 108 bus_space_handle_t bsh; 109 }; 110 111 struct anadig_softc *anadig_sc; 112 113 static struct resource_spec anadig_spec[] = { 114 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 115 { -1, 0 } 116 }; 117 118 static int 119 anadig_probe(device_t dev) 120 { 121 122 if (!ofw_bus_status_okay(dev)) 123 return (ENXIO); 124 125 if (!ofw_bus_is_compatible(dev, "fsl,mvf600-anadig")) 126 return (ENXIO); 127 128 device_set_desc(dev, "Vybrid Family ANADIG Unit"); 129 return (BUS_PROBE_DEFAULT); 130 } 131 132 static int 133 enable_pll(struct anadig_softc *sc, int pll_ctrl) 134 { 135 int reg; 136 137 reg = READ4(sc, pll_ctrl); 138 reg &= ~(CTRL_BYPASS | CTRL_PWR); 139 if (pll_ctrl == ANADIG_PLL3_CTRL || pll_ctrl == ANADIG_PLL7_CTRL) { 140 /* It is USB PLL. Power bit logic is reversed */ 141 reg |= (CTRL_PWR | EN_USB_CLKS); 142 } 143 WRITE4(sc, pll_ctrl, reg); 144 145 /* Wait for PLL lock */ 146 while (!(READ4(sc, pll_ctrl) & ANADIG_PLL_LOCKED)) 147 ; 148 149 reg = READ4(sc, pll_ctrl); 150 reg |= (CTRL_PLL_EN); 151 WRITE4(sc, pll_ctrl, reg); 152 153 return (0); 154 } 155 156 uint32_t 157 pll4_configure_output(uint32_t mfi, uint32_t mfn, uint32_t mfd) 158 { 159 struct anadig_softc *sc; 160 int reg; 161 162 sc = anadig_sc; 163 164 /* 165 * PLLout = Fsys * (MFI+(MFN/MFD)) 166 */ 167 168 reg = READ4(sc, ANADIG_PLL4_CTRL); 169 reg &= ~(PLL4_CTRL_DIV_SEL_M << PLL4_CTRL_DIV_SEL_S); 170 reg |= (mfi << PLL4_CTRL_DIV_SEL_S); 171 WRITE4(sc, ANADIG_PLL4_CTRL, reg); 172 WRITE4(sc, ANADIG_PLL4_NUM, mfn); 173 WRITE4(sc, ANADIG_PLL4_DENOM, mfd); 174 175 return (0); 176 } 177 178 static int 179 anadig_attach(device_t dev) 180 { 181 struct anadig_softc *sc; 182 int reg; 183 184 sc = device_get_softc(dev); 185 186 if (bus_alloc_resources(dev, anadig_spec, sc->res)) { 187 device_printf(dev, "could not allocate resources\n"); 188 return (ENXIO); 189 } 190 191 /* Memory interface */ 192 sc->bst = rman_get_bustag(sc->res[0]); 193 sc->bsh = rman_get_bushandle(sc->res[0]); 194 195 anadig_sc = sc; 196 197 /* Enable USB PLLs */ 198 enable_pll(sc, ANADIG_PLL3_CTRL); 199 enable_pll(sc, ANADIG_PLL7_CTRL); 200 201 /* Enable other PLLs */ 202 enable_pll(sc, ANADIG_PLL1_CTRL); 203 enable_pll(sc, ANADIG_PLL2_CTRL); 204 enable_pll(sc, ANADIG_PLL4_CTRL); 205 enable_pll(sc, ANADIG_PLL5_CTRL); 206 enable_pll(sc, ANADIG_PLL6_CTRL); 207 208 /* Enable USB voltage regulator */ 209 reg = READ4(sc, ANADIG_REG_3P0); 210 reg |= (ENABLE_LINREG); 211 WRITE4(sc, ANADIG_REG_3P0, reg); 212 213 /* Give clocks to USB */ 214 reg = READ4(sc, USB_MISC(0)); 215 reg |= (EN_CLK_TO_UTMI); 216 WRITE4(sc, USB_MISC(0), reg); 217 218 reg = READ4(sc, USB_MISC(1)); 219 reg |= (EN_CLK_TO_UTMI); 220 WRITE4(sc, USB_MISC(1), reg); 221 222 #if 0 223 printf("USB_ANALOG_USB_MISC(0) == 0x%08x\n", 224 READ4(sc, USB_ANALOG_USB_MISC(0))); 225 printf("USB_ANALOG_USB_MISC(1) == 0x%08x\n", 226 READ4(sc, USB_ANALOG_USB_MISC(1))); 227 #endif 228 229 return (0); 230 } 231 232 static device_method_t anadig_methods[] = { 233 DEVMETHOD(device_probe, anadig_probe), 234 DEVMETHOD(device_attach, anadig_attach), 235 { 0, 0 } 236 }; 237 238 static driver_t anadig_driver = { 239 "anadig", 240 anadig_methods, 241 sizeof(struct anadig_softc), 242 }; 243 244 DRIVER_MODULE(anadig, simplebus, anadig_driver, 0, 0); 245