board/softing/vining_2000/vining_2000.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016 samtec automotive software & electronics gmbh
   4  * Copyright (C) 2017-2019 softing automotive electronics gmbH
   5  *
   6  * Author: Christoph Fritz <chf.fritz@googlemail.com>
   7  */
   8
   9 #include <asm/arch/clock.h>
  10 #include <asm/arch/crm_regs.h>
  11 #include <asm/arch/iomux.h>
  12 #include <asm/arch/imx-regs.h>
  13 #include <asm/arch/mx6-pins.h>
  14 #include <asm/arch/sys_proto.h>
  15 #include <asm/gpio.h>
  16 #include <asm/mach-imx/iomux-v3.h>
  17 #include <asm/io.h>
  18 #include <asm/mach-imx/mxc_i2c.h>
  19 #include <linux/sizes.h>
  20 #include <common.h>
  21 #include <environment.h>
  22 #include <fsl_esdhc.h>
  23 #include <mmc.h>
  24 #include <i2c.h>
  25 #include <miiphy.h>
  26 #include <netdev.h>
  27 #include <power/pmic.h>
  28 #include <power/pfuze100_pmic.h>
  29 #include <usb.h>
  30 #include <usb/ehci-ci.h>
  31 #include <pwm.h>
  32 #include <wait_bit.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 #define UART_PAD_CTRL  (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP |     \
  37         PAD_CTL_PKE | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |   \
  38         PAD_CTL_SRE_FAST)
  39
  40 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PKE |     \
  41         PAD_CTL_SPEED_HIGH | PAD_CTL_DSE_48ohm |                \
  42         PAD_CTL_SRE_FAST)
  43
  44 #define ENET_CLK_PAD_CTRL  PAD_CTL_DSE_34ohm
  45
  46 #define ENET_RX_PAD_CTRL  (PAD_CTL_PKE |                        \
  47         PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_HIGH |            \
  48         PAD_CTL_SRE_FAST)
  49
  50 #define I2C_PAD_CTRL  (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP |      \
  51         PAD_CTL_PKE | PAD_CTL_ODE | PAD_CTL_SPEED_MED |         \
  52         PAD_CTL_DSE_40ohm)
  53
  54 #define USDHC_CLK_PAD_CTRL  (PAD_CTL_HYS | PAD_CTL_SPEED_MED |  \
  55         PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST)
  56
  57 #define USDHC_PAD_CTRL  (PAD_CTL_HYS | PAD_CTL_PUS_47K_UP |     \
  58         PAD_CTL_PKE |  PAD_CTL_SPEED_MED | PAD_CTL_DSE_80ohm |  \
  59         PAD_CTL_SRE_FAST)
  60
  61 #define USDHC_RESET_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_47K_UP |    \
  62         PAD_CTL_PKE |  PAD_CTL_SPEED_MED | PAD_CTL_DSE_80ohm)
  63
  64 #define GPIO_PAD_CTRL  (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP |     \
  65         PAD_CTL_PKE)
  66
  67 int dram_init(void)
  68 {
  69         gd->ram_size = imx_ddr_size();
  70
  71         return 0;
  72 }
  73
  74 static iomux_v3_cfg_t const fec1_pads[] = {
  75         MX6_PAD_ENET1_MDC__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
  76         MX6_PAD_ENET1_MDIO__ENET1_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
  77         MX6_PAD_RGMII1_RD0__ENET1_RX_DATA_0 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  78         MX6_PAD_RGMII1_RD1__ENET1_RX_DATA_1 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  79         MX6_PAD_RGMII1_TD0__ENET1_TX_DATA_0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  80         MX6_PAD_RGMII1_TD1__ENET1_TX_DATA_1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  81         MX6_PAD_RGMII1_RX_CTL__ENET1_RX_EN | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  82         MX6_PAD_RGMII1_TX_CTL__ENET1_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
  83         MX6_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL) |
  84                 MUX_MODE_SION,
  85         /* LAN8720 PHY Reset */
  86         MX6_PAD_RGMII1_TD3__GPIO5_IO_9 | MUX_PAD_CTRL(NO_PAD_CTRL),
  87 };
  88
  89 static iomux_v3_cfg_t const pwm_led_pads[] = {
  90         MX6_PAD_RGMII2_RD2__PWM2_OUT | MUX_PAD_CTRL(NO_PAD_CTRL), /* green */
  91         MX6_PAD_RGMII2_TD2__PWM6_OUT | MUX_PAD_CTRL(NO_PAD_CTRL), /* red */
  92         MX6_PAD_RGMII2_RD3__PWM1_OUT | MUX_PAD_CTRL(NO_PAD_CTRL), /* blue */
  93 };
  94
  95 #define PHY_RESET IMX_GPIO_NR(5, 9)
  96
  97 int board_eth_init(bd_t *bis)
  98 {
  99         struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 100         int ret;
 101         unsigned char eth1addr[6];
 102
 103         /* just to get secound mac address */
 104         imx_get_mac_from_fuse(1, eth1addr);
 105         if (!env_get("eth1addr") && is_valid_ethaddr(eth1addr))
 106                 eth_env_set_enetaddr("eth1addr", eth1addr);
 107
 108         imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
 109
 110         /*
 111          * Generate phy reference clock via pin IOMUX ENET_REF_CLK1/2 by erasing
 112          * ENET1/2_TX_CLK_DIR gpr1[14:13], so that reference clock is driven by
 113          * ref_enetpll0/1 and enable ENET1/2_TX_CLK output driver.
 114          */
 115         clrsetbits_le32(&iomuxc_regs->gpr[1],
 116                         IOMUX_GPR1_FEC1_CLOCK_MUX2_SEL_MASK |
 117                         IOMUX_GPR1_FEC2_CLOCK_MUX2_SEL_MASK,
 118                         IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK |
 119                         IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
 120
 121         ret = enable_fec_anatop_clock(0, ENET_50MHZ);
 122         if (ret)
 123                 goto eth_fail;
 124
 125         /* reset phy */
 126         gpio_request(PHY_RESET, "PHY-reset");
 127         gpio_direction_output(PHY_RESET, 0);
 128         mdelay(16);
 129         gpio_set_value(PHY_RESET, 1);
 130         mdelay(1);
 131
 132         ret = fecmxc_initialize_multi(bis, 0, CONFIG_FEC_MXC_PHYADDR,
 133                                         IMX_FEC_BASE);
 134         if (ret)
 135                 goto eth_fail;
 136
 137         return ret;
 138
 139 eth_fail:
 140         printf("FEC MXC: %s:failed (%i)\n", __func__, ret);
 141         gpio_set_value(PHY_RESET, 0);
 142         return ret;
 143 }
 144
 145 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 146 /* I2C1 for PMIC */
 147 static struct i2c_pads_info i2c_pad_info1 = {
 148         .scl = {
 149                 .i2c_mode = MX6_PAD_GPIO1_IO00__I2C1_SCL | PC,
 150                 .gpio_mode = MX6_PAD_GPIO1_IO00__GPIO1_IO_0 | PC,
 151                 .gp = IMX_GPIO_NR(1, 0),
 152         },
 153         .sda = {
 154                 .i2c_mode = MX6_PAD_GPIO1_IO01__I2C1_SDA | PC,
 155                 .gpio_mode = MX6_PAD_GPIO1_IO01__GPIO1_IO_1 | PC,
 156                 .gp = IMX_GPIO_NR(1, 1),
 157         },
 158 };
 159
 160 static struct pmic *pfuze_init(unsigned char i2cbus)
 161 {
 162         struct pmic *p;
 163         int ret;
 164         u32 reg;
 165
 166         ret = power_pfuze100_init(i2cbus);
 167         if (ret)
 168                 return NULL;
 169
 170         p = pmic_get("PFUZE100");
 171         ret = pmic_probe(p);
 172         if (ret)
 173                 return NULL;
 174
 175         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 176         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 177
 178         /* Set SW1AB stanby volage to 0.975V */
 179         pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
 180         reg &= ~SW1x_STBY_MASK;
 181         reg |= SW1x_0_975V;
 182         pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
 183
 184         /* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
 185         pmic_reg_read(p, PFUZE100_SW1ABCONF, &reg);
 186         reg &= ~SW1xCONF_DVSSPEED_MASK;
 187         reg |= SW1xCONF_DVSSPEED_4US;
 188         pmic_reg_write(p, PFUZE100_SW1ABCONF, reg);
 189
 190         /* Set SW1C standby voltage to 0.975V */
 191         pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
 192         reg &= ~SW1x_STBY_MASK;
 193         reg |= SW1x_0_975V;
 194         pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
 195
 196         /* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
 197         pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
 198         reg &= ~SW1xCONF_DVSSPEED_MASK;
 199         reg |= SW1xCONF_DVSSPEED_4US;
 200         pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
 201
 202         return p;
 203 }
 204
 205 static int pfuze_mode_init(struct pmic *p, u32 mode)
 206 {
 207         unsigned char offset, i, switch_num;
 208         u32 id;
 209         int ret;
 210
 211         pmic_reg_read(p, PFUZE100_DEVICEID, &id);
 212         id = id & 0xf;
 213
 214         if (id == 0) {
 215                 switch_num = 6;
 216                 offset = PFUZE100_SW1CMODE;
 217         } else if (id == 1) {
 218                 switch_num = 4;
 219                 offset = PFUZE100_SW2MODE;
 220         } else {
 221                 printf("Not supported, id=%d\n", id);
 222                 return -EINVAL;
 223         }
 224
 225         ret = pmic_reg_write(p, PFUZE100_SW1ABMODE, mode);
 226         if (ret < 0) {
 227                 printf("Set SW1AB mode error!\n");
 228                 return ret;
 229         }
 230
 231         for (i = 0; i < switch_num - 1; i++) {
 232                 ret = pmic_reg_write(p, offset + i * SWITCH_SIZE, mode);
 233                 if (ret < 0) {
 234                         printf("Set switch 0x%x mode error!\n",
 235                                offset + i * SWITCH_SIZE);
 236                         return ret;
 237                 }
 238         }
 239
 240         return ret;
 241 }
 242
 243 int power_init_board(void)
 244 {
 245         struct pmic *p;
 246         int ret;
 247
 248         p = pfuze_init(I2C_PMIC);
 249         if (!p)
 250                 return -ENODEV;
 251
 252         ret = pfuze_mode_init(p, APS_PFM);
 253         if (ret < 0)
 254                 return ret;
 255
 256         return 0;
 257 }
 258
 259 #ifdef CONFIG_USB_EHCI_MX6
 260 static iomux_v3_cfg_t const usb_otg_pads[] = {
 261         /* OGT1 */
 262         MX6_PAD_GPIO1_IO09__USB_OTG1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 263         MX6_PAD_GPIO1_IO10__ANATOP_OTG1_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
 264         /* OTG2 */
 265         MX6_PAD_GPIO1_IO12__USB_OTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL)
 266 };
 267
 268 static void setup_iomux_usb(void)
 269 {
 270         imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
 271                                          ARRAY_SIZE(usb_otg_pads));
 272 }
 273
 274 int board_usb_phy_mode(int port)
 275 {
 276         if (port == 1)
 277                 return USB_INIT_HOST;
 278         else
 279                 return usb_phy_mode(port);
 280 }
 281 #endif
 282
 283 #ifdef CONFIG_PWM_IMX
 284 static int set_pwm_leds(void)
 285 {
 286         int ret;
 287
 288         imx_iomux_v3_setup_multiple_pads(pwm_led_pads,
 289                                          ARRAY_SIZE(pwm_led_pads));
 290         /* enable backlight PWM 2, green LED */
 291         ret = pwm_init(1, 0, 0);
 292         if (ret)
 293                 goto error;
 294         /* duty cycle 200ns, period: 8000ns */
 295         ret = pwm_config(1, 200, 8000);
 296         if (ret)
 297                 goto error;
 298         ret = pwm_enable(1);
 299         if (ret)
 300                 goto error;
 301
 302         /* enable backlight PWM 1, blue LED */
 303         ret = pwm_init(0, 0, 0);
 304         if (ret)
 305                 goto error;
 306         /* duty cycle 200ns, period: 8000ns */
 307         ret = pwm_config(0, 200, 8000);
 308         if (ret)
 309                 goto error;
 310         ret = pwm_enable(0);
 311         if (ret)
 312                 goto error;
 313
 314         /* enable backlight PWM 6, red LED */
 315         ret = pwm_init(5, 0, 0);
 316         if (ret)
 317                 goto error;
 318         /* duty cycle 200ns, period: 8000ns */
 319         ret = pwm_config(5, 200, 8000);
 320         if (ret)
 321                 goto error;
 322         ret = pwm_enable(5);
 323
 324 error:
 325         return ret;
 326 }
 327 #else
 328 static int set_pwm_leds(void)
 329 {
 330         return 0;
 331 }
 332 #endif
 333
 334 #define ADCx_HC0        0x00
 335 #define ADCx_HS         0x08
 336 #define ADCx_HS_C0      BIT(0)
 337 #define ADCx_R0         0x0c
 338 #define ADCx_CFG        0x14
 339 #define ADCx_CFG_SWMODE 0x308
 340 #define ADCx_GC         0x18
 341 #define ADCx_GC_CAL     BIT(7)
 342
 343 static int read_adc(u32 *val)
 344 {
 345         int ret;
 346         void __iomem *b = map_physmem(ADC1_BASE_ADDR, 0x100, MAP_NOCACHE);
 347
 348         /* use software mode */
 349         writel(ADCx_CFG_SWMODE, b + ADCx_CFG);
 350
 351         /* start auto calibration */
 352         setbits_le32(b + ADCx_GC, ADCx_GC_CAL);
 353         ret = wait_for_bit_le32(b + ADCx_GC, ADCx_GC_CAL, ADCx_GC_CAL, 10, 0);
 354         if (ret)
 355                 goto adc_exit;
 356
 357         /* start conversion */
 358         writel(0, b + ADCx_HC0);
 359
 360         /* wait for conversion */
 361         ret = wait_for_bit_le32(b + ADCx_HS, ADCx_HS_C0, ADCx_HS_C0, 10, 0);
 362         if (ret)
 363                 goto adc_exit;
 364
 365         /* read result */
 366         *val = readl(b + ADCx_R0);
 367
 368 adc_exit:
 369         if (ret)
 370                 printf("ADC failure (ret=%i)\n", ret);
 371         unmap_physmem(b, MAP_NOCACHE);
 372         return ret;
 373 }
 374
 375 #define VAL_UPPER       2498
 376 #define VAL_LOWER       1550
 377
 378 static int set_pin_state(void)
 379 {
 380         u32 val;
 381         int ret;
 382
 383         ret = read_adc(&val);
 384         if (ret)
 385                 return ret;
 386
 387         if (val >= VAL_UPPER)
 388                 env_set("pin_state", "connected");
 389         else if (val < VAL_UPPER && val > VAL_LOWER)
 390                 env_set("pin_state", "open");
 391         else
 392                 env_set("pin_state", "button");
 393
 394         return ret;
 395 }
 396
 397 int board_late_init(void)
 398 {
 399         int ret;
 400
 401         ret = set_pwm_leds();
 402         if (ret)
 403                 return ret;
 404
 405         ret = set_pin_state();
 406
 407         return ret;
 408 }
 409
 410 int board_early_init_f(void)
 411 {
 412         setup_iomux_usb();
 413
 414         return 0;
 415 }
 416
 417 int board_init(void)
 418 {
 419         /* Address of boot parameters */
 420         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 421
 422 #ifdef CONFIG_SYS_I2C_MXC
 423         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 424 #endif
 425
 426         return 0;
 427 }
 428
 429 int checkboard(void)
 430 {
 431         puts("Board: VIN|ING 2000\n");
 432
 433         return 0;
 434 }