vf_anadig.c revision 331722
1/*- 2 * Copyright (c) 2013-2014 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 */ 26 27/* 28 * Vybrid Family Analog components control digital interface (ANADIG) 29 * Chapter 11, Vybrid Reference Manual, Rev. 5, 07/2013 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: stable/11/sys/arm/freescale/vybrid/vf_anadig.c 331722 2018-03-29 02:50:57Z eadler $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/bus.h> 38#include <sys/kernel.h> 39#include <sys/module.h> 40#include <sys/malloc.h> 41#include <sys/rman.h> 42#include <sys/timeet.h> 43#include <sys/timetc.h> 44#include <sys/watchdog.h> 45 46#include <dev/fdt/fdt_common.h> 47#include <dev/ofw/openfirm.h> 48#include <dev/ofw/ofw_bus.h> 49#include <dev/ofw/ofw_bus_subr.h> 50 51#include <machine/bus.h> 52#include <machine/cpu.h> 53#include <machine/intr.h> 54 55#include <arm/freescale/vybrid/vf_common.h> 56 57#define ANADIG_PLL3_CTRL 0x010 /* PLL3 Control */ 58#define ANADIG_PLL7_CTRL 0x020 /* PLL7 Control */ 59#define ANADIG_PLL2_CTRL 0x030 /* PLL2 Control */ 60#define ANADIG_PLL2_SS 0x040 /* PLL2 Spread Spectrum */ 61#define ANADIG_PLL2_NUM 0x050 /* PLL2 Numerator */ 62#define ANADIG_PLL2_DENOM 0x060 /* PLL2 Denominator */ 63#define ANADIG_PLL4_CTRL 0x070 /* PLL4 Control */ 64#define ANADIG_PLL4_NUM 0x080 /* PLL4 Numerator */ 65#define ANADIG_PLL4_DENOM 0x090 /* PLL4 Denominator */ 66#define ANADIG_PLL6_CTRL 0x0A0 /* PLL6 Control */ 67#define ANADIG_PLL6_NUM 0x0B0 /* PLL6 Numerator */ 68#define ANADIG_PLL6_DENOM 0x0C0 /* PLL6 Denominator */ 69#define ANADIG_PLL5_CTRL 0x0E0 /* PLL5 Control */ 70#define ANADIG_PLL3_PFD 0x0F0 /* PLL3 PFD */ 71#define ANADIG_PLL2_PFD 0x100 /* PLL2 PFD */ 72#define ANADIG_REG_1P1 0x110 /* Regulator 1P1 */ 73#define ANADIG_REG_3P0 0x120 /* Regulator 3P0 */ 74#define ANADIG_REG_2P5 0x130 /* Regulator 2P5 */ 75#define ANADIG_ANA_MISC0 0x150 /* Analog Miscellaneous */ 76#define ANADIG_ANA_MISC1 0x160 /* Analog Miscellaneous */ 77#define ANADIG_ANADIG_DIGPROG 0x260 /* Digital Program */ 78#define ANADIG_PLL1_CTRL 0x270 /* PLL1 Control */ 79#define ANADIG_PLL1_SS 0x280 /* PLL1 Spread Spectrum */ 80#define ANADIG_PLL1_NUM 0x290 /* PLL1 Numerator */ 81#define ANADIG_PLL1_DENOM 0x2A0 /* PLL1 Denominator */ 82#define ANADIG_PLL1_PFD 0x2B0 /* PLL1_PFD */ 83#define ANADIG_PLL_LOCK 0x2C0 /* PLL Lock */ 84 85#define USB_VBUS_DETECT(n) (0x1A0 + 0x60 * n) 86#define USB_CHRG_DETECT(n) (0x1B0 + 0x60 * n) 87#define USB_VBUS_DETECT_STATUS(n) (0x1C0 + 0x60 * n) 88#define USB_CHRG_DETECT_STATUS(n) (0x1D0 + 0x60 * n) 89#define USB_LOOPBACK(n) (0x1E0 + 0x60 * n) 90#define USB_MISC(n) (0x1F0 + 0x60 * n) 91 92#define ANADIG_PLL_LOCKED (1U << 31) 93#define ENABLE_LINREG (1 << 0) 94#define EN_CLK_TO_UTMI (1 << 30) 95 96#define CTRL_BYPASS (1 << 16) 97#define CTRL_PWR (1 << 12) 98#define CTRL_PLL_EN (1 << 13) 99#define EN_USB_CLKS (1 << 6) 100 101#define PLL4_CTRL_DIV_SEL_S 0 102#define PLL4_CTRL_DIV_SEL_M 0x7f 103 104struct anadig_softc { 105 struct resource *res[1]; 106 bus_space_tag_t bst; 107 bus_space_handle_t bsh; 108}; 109 110struct anadig_softc *anadig_sc; 111 112static struct resource_spec anadig_spec[] = { 113 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 114 { -1, 0 } 115}; 116 117static int 118anadig_probe(device_t dev) 119{ 120 121 if (!ofw_bus_status_okay(dev)) 122 return (ENXIO); 123 124 if (!ofw_bus_is_compatible(dev, "fsl,mvf600-anadig")) 125 return (ENXIO); 126 127 device_set_desc(dev, "Vybrid Family ANADIG Unit"); 128 return (BUS_PROBE_DEFAULT); 129} 130 131static int 132enable_pll(struct anadig_softc *sc, int pll_ctrl) 133{ 134 int reg; 135 136 reg = READ4(sc, pll_ctrl); 137 reg &= ~(CTRL_BYPASS | CTRL_PWR); 138 if (pll_ctrl == ANADIG_PLL3_CTRL || pll_ctrl == ANADIG_PLL7_CTRL) { 139 /* It is USB PLL. Power bit logic is reversed */ 140 reg |= (CTRL_PWR | EN_USB_CLKS); 141 } 142 WRITE4(sc, pll_ctrl, reg); 143 144 /* Wait for PLL lock */ 145 while (!(READ4(sc, pll_ctrl) & ANADIG_PLL_LOCKED)) 146 ; 147 148 reg = READ4(sc, pll_ctrl); 149 reg |= (CTRL_PLL_EN); 150 WRITE4(sc, pll_ctrl, reg); 151 152 return (0); 153} 154 155uint32_t 156pll4_configure_output(uint32_t mfi, uint32_t mfn, uint32_t mfd) 157{ 158 struct anadig_softc *sc; 159 int reg; 160 161 sc = anadig_sc; 162 163 /* 164 * PLLout = Fsys * (MFI+(MFN/MFD)) 165 */ 166 167 reg = READ4(sc, ANADIG_PLL4_CTRL); 168 reg &= ~(PLL4_CTRL_DIV_SEL_M << PLL4_CTRL_DIV_SEL_S); 169 reg |= (mfi << PLL4_CTRL_DIV_SEL_S); 170 WRITE4(sc, ANADIG_PLL4_CTRL, reg); 171 WRITE4(sc, ANADIG_PLL4_NUM, mfn); 172 WRITE4(sc, ANADIG_PLL4_DENOM, mfd); 173 174 return (0); 175} 176 177static int 178anadig_attach(device_t dev) 179{ 180 struct anadig_softc *sc; 181 int reg; 182 183 sc = device_get_softc(dev); 184 185 if (bus_alloc_resources(dev, anadig_spec, sc->res)) { 186 device_printf(dev, "could not allocate resources\n"); 187 return (ENXIO); 188 } 189 190 /* Memory interface */ 191 sc->bst = rman_get_bustag(sc->res[0]); 192 sc->bsh = rman_get_bushandle(sc->res[0]); 193 194 anadig_sc = sc; 195 196 /* Enable USB PLLs */ 197 enable_pll(sc, ANADIG_PLL3_CTRL); 198 enable_pll(sc, ANADIG_PLL7_CTRL); 199 200 /* Enable other PLLs */ 201 enable_pll(sc, ANADIG_PLL1_CTRL); 202 enable_pll(sc, ANADIG_PLL2_CTRL); 203 enable_pll(sc, ANADIG_PLL4_CTRL); 204 enable_pll(sc, ANADIG_PLL5_CTRL); 205 enable_pll(sc, ANADIG_PLL6_CTRL); 206 207 /* Enable USB voltage regulator */ 208 reg = READ4(sc, ANADIG_REG_3P0); 209 reg |= (ENABLE_LINREG); 210 WRITE4(sc, ANADIG_REG_3P0, reg); 211 212 /* Give clocks to USB */ 213 reg = READ4(sc, USB_MISC(0)); 214 reg |= (EN_CLK_TO_UTMI); 215 WRITE4(sc, USB_MISC(0), reg); 216 217 reg = READ4(sc, USB_MISC(1)); 218 reg |= (EN_CLK_TO_UTMI); 219 WRITE4(sc, USB_MISC(1), reg); 220 221#if 0 222 printf("USB_ANALOG_USB_MISC(0) == 0x%08x\n", 223 READ4(sc, USB_ANALOG_USB_MISC(0))); 224 printf("USB_ANALOG_USB_MISC(1) == 0x%08x\n", 225 READ4(sc, USB_ANALOG_USB_MISC(1))); 226#endif 227 228 return (0); 229} 230 231static device_method_t anadig_methods[] = { 232 DEVMETHOD(device_probe, anadig_probe), 233 DEVMETHOD(device_attach, anadig_attach), 234 { 0, 0 } 235}; 236 237static driver_t anadig_driver = { 238 "anadig", 239 anadig_methods, 240 sizeof(struct anadig_softc), 241}; 242 243static devclass_t anadig_devclass; 244 245DRIVER_MODULE(anadig, simplebus, anadig_driver, anadig_devclass, 0, 0); 246