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_imx.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 static void setup_iomux_uart(void)
 163 {
 164         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 165 }
 166
 167 #ifdef CONFIG_FEC_MXC
 168 static int setup_fec(void)
 169 {
 170         struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs
 171                 = (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
 172
 173 #ifndef CONFIG_COLIBRI_IMX7_EXT_PHYCLK
 174         /*
 175          * Use 50M anatop REF_CLK1 for ENET1, clear gpr1[13], set gpr1[17]
 176          * and output it on the pin
 177          */
 178         clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
 179                         IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK,
 180                         IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK);
 181 #else
 182         /* Use 50M external CLK for ENET1, set gpr1[13], clear gpr1[17] */
 183         clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
 184                         IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK,
 185                         IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK);
 186 #endif
 187
 188         return set_clk_enet(ENET_50MHZ);
 189 }
 190
 191 #endif
 192
 193 int board_early_init_f(void)
 194 {
 195         setup_iomux_uart();
 196
 197         return 0;
 198 }
 199
 200 int board_init(void)
 201 {
 202         /* address of boot parameters */
 203         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 204
 205 #ifdef CONFIG_FEC_MXC
 206         setup_fec();
 207 #endif
 208
 209 #ifdef CONFIG_TARGET_COLIBRI_IMX7_NAND
 210         setup_gpmi_nand();
 211 #endif
 212
 213 #ifdef CONFIG_VIDEO_MXS
 214         setup_lcd();
 215 #endif
 216
 217 #ifdef CONFIG_USB_EHCI_MX7
 218         imx_iomux_v3_setup_multiple_pads(usb_cdet_pads, ARRAY_SIZE(usb_cdet_pads));
 219         gpio_request(USB_CDET_GPIO, "usb-cdet-gpio");
 220 #endif
 221
 222         return 0;
 223 }
 224
 225 #ifdef CONFIG_DM_PMIC
 226 int power_init_board(void)
 227 {
 228         struct udevice *dev;
 229         int reg, ver;
 230         int ret;
 231
 232
 233         ret = pmic_get("rn5t567@33", &dev);
 234         if (ret)
 235                 return ret;
 236         ver = pmic_reg_read(dev, RN5T567_LSIVER);
 237         reg = pmic_reg_read(dev, RN5T567_OTPVER);
 238
 239         printf("PMIC:  RN5T567 LSIVER=0x%02x OTPVER=0x%02x\n", ver, reg);
 240
 241         /* set judge and press timer of N_OE to minimal values */
 242         pmic_clrsetbits(dev, RN5T567_NOETIMSETCNT, 0x7, 0);
 243
 244         /* configure sleep slot for 3.3V Ethernet */
 245         reg = pmic_reg_read(dev, RN5T567_LDO1_SLOT);
 246         reg = (reg & 0xf0) | reg >> 4;
 247         pmic_reg_write(dev, RN5T567_LDO1_SLOT, reg);
 248
 249         /* disable DCDC2 discharge to avoid backfeeding through VFB2 */
 250         pmic_clrsetbits(dev, RN5T567_DC2CTL, 0x2, 0);
 251
 252         /* configure sleep slot for ARM rail */
 253         reg = pmic_reg_read(dev, RN5T567_DC2_SLOT);
 254         reg = (reg & 0xf0) | reg >> 4;
 255         pmic_reg_write(dev, RN5T567_DC2_SLOT, reg);
 256
 257         /* disable LDO2 discharge to avoid backfeeding from +V3.3_SD */
 258         pmic_clrsetbits(dev, RN5T567_LDODIS1, 0x2, 0);
 259
 260         return 0;
 261 }
 262
 263 void reset_cpu(ulong addr)
 264 {
 265         struct udevice *dev;
 266
 267         pmic_get("rn5t567@33", &dev);
 268
 269         /* Use PMIC to reset, set REPWRTIM to 0 and REPWRON to 1 */
 270         pmic_reg_write(dev, RN5T567_REPCNT, 0x1);
 271         pmic_reg_write(dev, RN5T567_SLPCNT, 0x1);
 272
 273         /*
 274          * Re-power factor detection on PMIC side is not instant. 1ms
 275          * proved to be enough time until reset takes effect.
 276          */
 277         mdelay(1);
 278 }
 279 #endif
 280
 281 int checkboard(void)
 282 {
 283         printf("Model: Toradex Colibri iMX7%c\n",
 284                is_cpu_type(MXC_CPU_MX7D) ? 'D' : 'S');
 285
 286         return 0;
 287 }
 288
 289 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 290 int ft_board_setup(void *blob, bd_t *bd)
 291 {
 292 #if defined(CONFIG_IMX_BOOTAUX) && defined(CONFIG_ARCH_FIXUP_FDT_MEMORY)
 293         int up;
 294
 295         up = arch_auxiliary_core_check_up(0);
 296         if (up) {
 297                 int ret;
 298                 int areas = 1;
 299                 u64 start[2], size[2];
 300
 301                 /*
 302                  * Reserve 1MB of memory for M4 (1MiB is also the minimum
 303                  * alignment for Linux due to MMU section size restrictions).
 304                  */
 305                 start[0] = gd->bd->bi_dram[0].start;
 306                 size[0] = SZ_256M - SZ_1M;
 307
 308                 /* If needed, create a second entry for memory beyond 256M */
 309                 if (gd->bd->bi_dram[0].size > SZ_256M) {
 310                         start[1] = gd->bd->bi_dram[0].start + SZ_256M;
 311                         size[1] = gd->bd->bi_dram[0].size - SZ_256M;
 312                         areas = 2;
 313                 }
 314
 315                 ret = fdt_set_usable_memory(blob, start, size, areas);
 316                 if (ret) {
 317                         eprintf("Cannot set usable memory\n");
 318                         return ret;
 319                 }
 320         } else {
 321                 int off;
 322
 323                 off = fdt_node_offset_by_compatible(blob, -1,
 324                                                     "fsl,imx7d-rpmsg");
 325                 if (off > 0)
 326                         fdt_status_disabled(blob, off);
 327         }
 328 #endif
 329 #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
 330         static const struct node_info nodes[] = {
 331                 { "fsl,imx7d-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
 332                 { "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, },
 333         };
 334
 335         /* Update partition nodes using info from mtdparts env var */
 336         puts("   Updating MTD partitions...\n");
 337         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 338 #endif
 339
 340         return ft_common_board_setup(blob, bd);
 341 }
 342 #endif
 343
 344 #ifdef CONFIG_USB_EHCI_MX7
 345 static iomux_v3_cfg_t const usb_otg2_pads[] = {
 346         MX7D_PAD_UART3_CTS_B__USB_OTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 347 };
 348
 349 int board_ehci_hcd_init(int port)
 350 {
 351         switch (port) {
 352         case 0:
 353                 break;
 354         case 1:
 355                 if (is_cpu_type(MXC_CPU_MX7S))
 356                         return -ENODEV;
 357
 358                 imx_iomux_v3_setup_multiple_pads(usb_otg2_pads,
 359                                                  ARRAY_SIZE(usb_otg2_pads));
 360                 break;
 361         default:
 362                 return -EINVAL;
 363         }
 364         return 0;
 365 }
 366
 367 int board_usb_phy_mode(int port)
 368 {
 369         switch (port) {
 370         case 0:
 371                 if (gpio_get_value(USB_CDET_GPIO))
 372                         return USB_INIT_DEVICE;
 373                 else
 374                         return USB_INIT_HOST;
 375         case 1:
 376         default:
 377                 return USB_INIT_HOST;
 378         }
 379 }
 380 #endif