board/toradex/colibri_imx7/colibri_imx7.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016-2018 Toradex AG
   4  */
   5
   6 #include <asm/arch/clock.h>
   7 #include <asm/arch/crm_regs.h>
   8 #include <asm/arch/imx-regs.h>
   9 #include <asm/arch/mx7-pins.h>
  10 #include <asm/arch/sys_proto.h>
  11 #include <asm/gpio.h>
  12 #include <asm/mach-imx/iomux-v3.h>
  13 #include <asm/io.h>
  14 #include <common.h>
  15 #include <dm.h>
  16 #include <dm/platform_data/serial_mxc.h>
  17 #include <fdt_support.h>
  18 #include <fsl_esdhc.h>
  19 #include <jffs2/load_kernel.h>
  20 #include <linux/sizes.h>
  21 #include <mmc.h>
  22 #include <miiphy.h>
  23 #include <mtd_node.h>
  24 #include <netdev.h>
  25 #include <power/pmic.h>
  26 #include <power/rn5t567_pmic.h>
  27 #include <usb.h>
  28 #include <usb/ehci-ci.h>
  29 #include "../common/tdx-common.h"
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 #define UART_PAD_CTRL  (PAD_CTL_DSE_3P3V_49OHM | \
  34         PAD_CTL_PUS_PU100KOHM | PAD_CTL_HYS)
  35
  36 #define ENET_PAD_CTRL  (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
  37 #define ENET_PAD_CTRL_MII  (PAD_CTL_DSE_3P3V_32OHM)
  38
  39 #define ENET_RX_PAD_CTRL  (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
  40
  41 #define LCD_PAD_CTRL    (PAD_CTL_HYS | PAD_CTL_PUS_PU100KOHM | \
  42         PAD_CTL_DSE_3P3V_49OHM)
  43
  44 #define NAND_PAD_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
  45
  46 #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_PUS_PU5KOHM)
  47
  48 #define USB_CDET_GPIO   IMX_GPIO_NR(7, 14)
  49
  50 int dram_init(void)
  51 {
  52         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, imx_ddr_size());
  53
  54         return 0;
  55 }
  56
  57 static iomux_v3_cfg_t const uart1_pads[] = {
  58         MX7D_PAD_UART1_RX_DATA__UART1_DTE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  59         MX7D_PAD_UART1_TX_DATA__UART1_DTE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  60         MX7D_PAD_SAI2_TX_BCLK__UART1_DTE_CTS | MUX_PAD_CTRL(UART_PAD_CTRL),
  61         MX7D_PAD_SAI2_TX_SYNC__UART1_DTE_RTS | MUX_PAD_CTRL(UART_PAD_CTRL),
  62 };
  63
  64 #ifdef CONFIG_USB_EHCI_MX7
  65 static iomux_v3_cfg_t const usb_cdet_pads[] = {
  66         MX7D_PAD_ENET1_CRS__GPIO7_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
  67 };
  68 #endif
  69
  70 #ifdef CONFIG_TARGET_COLIBRI_IMX7_NAND
  71 static iomux_v3_cfg_t const gpmi_pads[] = {
  72         MX7D_PAD_SD3_DATA0__NAND_DATA00 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  73         MX7D_PAD_SD3_DATA1__NAND_DATA01 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  74         MX7D_PAD_SD3_DATA2__NAND_DATA02 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  75         MX7D_PAD_SD3_DATA3__NAND_DATA03 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  76         MX7D_PAD_SD3_DATA4__NAND_DATA04 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  77         MX7D_PAD_SD3_DATA5__NAND_DATA05 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  78         MX7D_PAD_SD3_DATA6__NAND_DATA06 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  79         MX7D_PAD_SD3_DATA7__NAND_DATA07 | MUX_PAD_CTRL(NAND_PAD_CTRL),
  80         MX7D_PAD_SD3_CLK__NAND_CLE      | MUX_PAD_CTRL(NAND_PAD_CTRL),
  81         MX7D_PAD_SD3_CMD__NAND_ALE      | MUX_PAD_CTRL(NAND_PAD_CTRL),
  82         MX7D_PAD_SD3_STROBE__NAND_RE_B  | MUX_PAD_CTRL(NAND_PAD_CTRL),
  83         MX7D_PAD_SD3_RESET_B__NAND_WE_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
  84         MX7D_PAD_SAI1_RX_DATA__NAND_CE1_B       | MUX_PAD_CTRL(NAND_PAD_CTRL),
  85         MX7D_PAD_SAI1_TX_BCLK__NAND_CE0_B       | MUX_PAD_CTRL(NAND_PAD_CTRL),
  86         MX7D_PAD_SAI1_TX_DATA__NAND_READY_B     | MUX_PAD_CTRL(NAND_PAD_READY0_CTRL),
  87 };
  88
  89 static void setup_gpmi_nand(void)
  90 {
  91         imx_iomux_v3_setup_multiple_pads(gpmi_pads, ARRAY_SIZE(gpmi_pads));
  92
  93         /* NAND_USDHC_BUS_CLK is set in rom */
  94         set_clk_nand();
  95 }
  96 #endif
  97
  98 #ifdef CONFIG_VIDEO_MXS
  99 static iomux_v3_cfg_t const lcd_pads[] = {
 100         MX7D_PAD_LCD_CLK__LCD_CLK | MUX_PAD_CTRL(LCD_PAD_CTRL),
 101         MX7D_PAD_LCD_ENABLE__LCD_ENABLE | MUX_PAD_CTRL(LCD_PAD_CTRL),
 102         MX7D_PAD_LCD_HSYNC__LCD_HSYNC | MUX_PAD_CTRL(LCD_PAD_CTRL),
 103         MX7D_PAD_LCD_VSYNC__LCD_VSYNC | MUX_PAD_CTRL(LCD_PAD_CTRL),
 104         MX7D_PAD_LCD_DATA00__LCD_DATA0 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 105         MX7D_PAD_LCD_DATA01__LCD_DATA1 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 106         MX7D_PAD_LCD_DATA02__LCD_DATA2 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 107         MX7D_PAD_LCD_DATA03__LCD_DATA3 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 108         MX7D_PAD_LCD_DATA04__LCD_DATA4 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 109         MX7D_PAD_LCD_DATA05__LCD_DATA5 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 110         MX7D_PAD_LCD_DATA06__LCD_DATA6 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 111         MX7D_PAD_LCD_DATA07__LCD_DATA7 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 112         MX7D_PAD_LCD_DATA08__LCD_DATA8 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 113         MX7D_PAD_LCD_DATA09__LCD_DATA9 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 114         MX7D_PAD_LCD_DATA10__LCD_DATA10 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 115         MX7D_PAD_LCD_DATA11__LCD_DATA11 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 116         MX7D_PAD_LCD_DATA12__LCD_DATA12 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 117         MX7D_PAD_LCD_DATA13__LCD_DATA13 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 118         MX7D_PAD_LCD_DATA14__LCD_DATA14 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 119         MX7D_PAD_LCD_DATA15__LCD_DATA15 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 120         MX7D_PAD_LCD_DATA16__LCD_DATA16 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 121         MX7D_PAD_LCD_DATA17__LCD_DATA17 | MUX_PAD_CTRL(LCD_PAD_CTRL),
 122 };
 123
 124 static iomux_v3_cfg_t const backlight_pads[] = {
 125         /* Backlight On */
 126         MX7D_PAD_SD1_WP__GPIO5_IO1 | MUX_PAD_CTRL(NO_PAD_CTRL),
 127         /* Backlight PWM<A> (multiplexed pin) */
 128         MX7D_PAD_GPIO1_IO08__GPIO1_IO8   | MUX_PAD_CTRL(NO_PAD_CTRL),
 129         MX7D_PAD_ECSPI2_MOSI__GPIO4_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
 130 };
 131
 132 #define GPIO_BL_ON IMX_GPIO_NR(5, 1)
 133 #define GPIO_PWM_A IMX_GPIO_NR(1, 8)
 134
 135 static int setup_lcd(void)
 136 {
 137         imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
 138
 139         imx_iomux_v3_setup_multiple_pads(backlight_pads, ARRAY_SIZE(backlight_pads));
 140
 141         /* Set BL_ON */
 142         gpio_request(GPIO_BL_ON, "BL_ON");
 143         gpio_direction_output(GPIO_BL_ON, 1);
 144
 145         /* Set PWM<A> to full brightness (assuming inversed polarity) */
 146         gpio_request(GPIO_PWM_A, "PWM<A>");
 147         gpio_direction_output(GPIO_PWM_A, 0);
 148
 149         return 0;
 150 }
 151 #endif
 152
 153 /*
 154  * Backlight off before OS handover
 155  */
 156 void board_preboot_os(void)
 157 {
 158         gpio_direction_output(GPIO_PWM_A, 1);
 159         gpio_direction_output(GPIO_BL_ON, 0);
 160 }
 161
 162 #ifdef CONFIG_FEC_MXC
 163 static iomux_v3_cfg_t const fec1_pads[] = {
 164 #ifndef CONFIG_COLIBRI_IMX7_EXT_PHYCLK
 165         MX7D_PAD_GPIO1_IO12__CCM_ENET_REF_CLK1 | MUX_PAD_CTRL(ENET_PAD_CTRL) | MUX_MODE_SION,
 166 #else
 167         MX7D_PAD_GPIO1_IO12__CCM_ENET_REF_CLK1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 168 #endif
 169         MX7D_PAD_SD2_CD_B__ENET1_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL_MII),
 170         MX7D_PAD_SD2_WP__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL_MII),
 171         MX7D_PAD_ENET1_RGMII_RD0__ENET1_RGMII_RD0 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
 172         MX7D_PAD_ENET1_RGMII_RD1__ENET1_RGMII_RD1 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
 173         MX7D_PAD_ENET1_RGMII_RXC__ENET1_RX_ER | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
 174         MX7D_PAD_ENET1_RGMII_RX_CTL__ENET1_RGMII_RX_CTL   | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
 175         MX7D_PAD_ENET1_RGMII_TD0__ENET1_RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 176         MX7D_PAD_ENET1_RGMII_TD1__ENET1_RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 177         MX7D_PAD_ENET1_RGMII_TX_CTL__ENET1_RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
 178 };
 179
 180 static void setup_iomux_fec(void)
 181 {
 182         imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
 183 }
 184 #endif
 185
 186 static void setup_iomux_uart(void)
 187 {
 188         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 189 }
 190
 191 #ifdef CONFIG_FEC_MXC
 192 int board_eth_init(bd_t *bis)
 193 {
 194         int ret;
 195
 196         setup_iomux_fec();
 197
 198         ret = fecmxc_initialize_multi(bis, 0,
 199                 CONFIG_FEC_MXC_PHYADDR, IMX_FEC_BASE);
 200         if (ret)
 201                 printf("FEC1 MXC: %s:failed\n", __func__);
 202
 203         return ret;
 204 }
 205
 206 static int setup_fec(void)
 207 {
 208         struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs
 209                 = (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
 210
 211 #ifndef CONFIG_COLIBRI_IMX7_EXT_PHYCLK
 212         /*
 213          * Use 50M anatop REF_CLK1 for ENET1, clear gpr1[13], set gpr1[17]
 214          * and output it on the pin
 215          */
 216         clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
 217                         IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK,
 218                         IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK);
 219 #else
 220         /* Use 50M external CLK for ENET1, set gpr1[13], clear gpr1[17] */
 221         clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
 222                         IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK,
 223                         IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK);
 224 #endif
 225
 226         return set_clk_enet(ENET_50MHZ);
 227 }
 228
 229 int board_phy_config(struct phy_device *phydev)
 230 {
 231         if (phydev->drv->config)
 232                 phydev->drv->config(phydev);
 233         return 0;
 234 }
 235 #endif
 236
 237 int board_early_init_f(void)
 238 {
 239         setup_iomux_uart();
 240
 241         return 0;
 242 }
 243
 244 int board_init(void)
 245 {
 246         /* address of boot parameters */
 247         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 248
 249 #ifdef CONFIG_FEC_MXC
 250         setup_fec();
 251 #endif
 252
 253 #ifdef CONFIG_TARGET_COLIBRI_IMX7_NAND
 254         setup_gpmi_nand();
 255 #endif
 256
 257 #ifdef CONFIG_VIDEO_MXS
 258         setup_lcd();
 259 #endif
 260
 261 #ifdef CONFIG_USB_EHCI_MX7
 262         imx_iomux_v3_setup_multiple_pads(usb_cdet_pads, ARRAY_SIZE(usb_cdet_pads));
 263         gpio_request(USB_CDET_GPIO, "usb-cdet-gpio");
 264 #endif
 265
 266         return 0;
 267 }
 268
 269 #ifdef CONFIG_DM_PMIC
 270 int power_init_board(void)
 271 {
 272         struct udevice *dev;
 273         int reg, ver;
 274         int ret;
 275
 276
 277         ret = pmic_get("rn5t567", &dev);
 278         if (ret)
 279                 return ret;
 280         ver = pmic_reg_read(dev, RN5T567_LSIVER);
 281         reg = pmic_reg_read(dev, RN5T567_OTPVER);
 282
 283         printf("PMIC:  RN5T567 LSIVER=0x%02x OTPVER=0x%02x\n", ver, reg);
 284
 285         /* set judge and press timer of N_OE to minimal values */
 286         pmic_clrsetbits(dev, RN5T567_NOETIMSETCNT, 0x7, 0);
 287
 288         /* configure sleep slot for 3.3V Ethernet */
 289         reg = pmic_reg_read(dev, RN5T567_LDO1_SLOT);
 290         reg = (reg & 0xf0) | reg >> 4;
 291         pmic_reg_write(dev, RN5T567_LDO1_SLOT, reg);
 292
 293         /* disable DCDC2 discharge to avoid backfeeding through VFB2 */
 294         pmic_clrsetbits(dev, RN5T567_DC2CTL, 0x2, 0);
 295
 296         /* configure sleep slot for ARM rail */
 297         reg = pmic_reg_read(dev, RN5T567_DC2_SLOT);
 298         reg = (reg & 0xf0) | reg >> 4;
 299         pmic_reg_write(dev, RN5T567_DC2_SLOT, reg);
 300
 301         /* disable LDO2 discharge to avoid backfeeding from +V3.3_SD */
 302         pmic_clrsetbits(dev, RN5T567_LDODIS1, 0x2, 0);
 303
 304         return 0;
 305 }
 306
 307 void reset_cpu(ulong addr)
 308 {
 309         struct udevice *dev;
 310
 311         pmic_get("rn5t567", &dev);
 312
 313         /* Use PMIC to reset, set REPWRTIM to 0 and REPWRON to 1 */
 314         pmic_reg_write(dev, RN5T567_REPCNT, 0x1);
 315         pmic_reg_write(dev, RN5T567_SLPCNT, 0x1);
 316
 317         /*
 318          * Re-power factor detection on PMIC side is not instant. 1ms
 319          * proved to be enough time until reset takes effect.
 320          */
 321         mdelay(1);
 322 }
 323 #endif
 324
 325 int checkboard(void)
 326 {
 327         printf("Model: Toradex Colibri iMX7%c\n",
 328                is_cpu_type(MXC_CPU_MX7D) ? 'D' : 'S');
 329
 330         return 0;
 331 }
 332
 333 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 334 int ft_board_setup(void *blob, bd_t *bd)
 335 {
 336 #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
 337         static const struct node_info nodes[] = {
 338                 { "fsl,imx7d-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
 339                 { "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, },
 340         };
 341
 342         /* Update partition nodes using info from mtdparts env var */
 343         puts("   Updating MTD partitions...\n");
 344         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 345 #endif
 346
 347         return ft_common_board_setup(blob, bd);
 348 }
 349 #endif
 350
 351 #ifdef CONFIG_USB_EHCI_MX7
 352 static iomux_v3_cfg_t const usb_otg2_pads[] = {
 353         MX7D_PAD_UART3_CTS_B__USB_OTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 354 };
 355
 356 int board_ehci_hcd_init(int port)
 357 {
 358         switch (port) {
 359         case 0:
 360                 break;
 361         case 1:
 362                 if (is_cpu_type(MXC_CPU_MX7S))
 363                         return -ENODEV;
 364
 365                 imx_iomux_v3_setup_multiple_pads(usb_otg2_pads,
 366                                                  ARRAY_SIZE(usb_otg2_pads));
 367                 break;
 368         default:
 369                 return -EINVAL;
 370         }
 371         return 0;
 372 }
 373
 374 int board_usb_phy_mode(int port)
 375 {
 376         switch (port) {
 377         case 0:
 378                 if (gpio_get_value(USB_CDET_GPIO))
 379                         return USB_INIT_DEVICE;
 380                 else
 381                         return USB_INIT_HOST;
 382         case 1:
 383         default:
 384                 return USB_INIT_HOST;
 385         }
 386 }
 387 #endif