1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2017 DENX Software Engineering 4 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <asm/io.h> 10 #include <asm/arch/clock.h> 11 #include <asm/arch/imx-regs.h> 12 #include <asm/arch/iomux.h> 13 #include <asm/arch/mx6-pins.h> 14 #include <asm/arch/mx6-ddr.h> 15 #include <asm/arch/sys_proto.h> 16 #include <errno.h> 17 #include <asm/gpio.h> 18 #include <malloc.h> 19 #include <asm/mach-imx/iomux-v3.h> 20 #include <asm/mach-imx/mxc_i2c.h> 21 #include <asm/mach-imx/boot_mode.h> 22 #include <asm/mach-imx/spi.h> 23 #include <mmc.h> 24 #include <fsl_esdhc.h> 25 #include <miiphy.h> 26 #include <netdev.h> 27 #include <i2c.h> 28 #include <environment.h> 29 30 #include <dm.h> 31 #include <dm/platform_data/serial_mxc.h> 32 #include <dm/platdata.h> 33 34 #ifndef CONFIG_MXC_SPI 35 #error "CONFIG_SPI must be set for this board" 36 #error "Please check your config file" 37 #endif 38 39 #include "common.h" 40 41 DECLARE_GLOBAL_DATA_PTR; 42 43 static bool hw_ids_valid; 44 static bool sw_ids_valid; 45 static u32 cpu_id; 46 static u32 unit_id; 47 48 #define EM_PAD IMX_GPIO_NR(3, 29) 49 #define SW0 IMX_GPIO_NR(2, 4) 50 #define SW1 IMX_GPIO_NR(2, 5) 51 #define SW2 IMX_GPIO_NR(2, 6) 52 #define SW3 IMX_GPIO_NR(2, 7) 53 #define HW0 IMX_GPIO_NR(6, 7) 54 #define HW1 IMX_GPIO_NR(6, 9) 55 #define HW2 IMX_GPIO_NR(6, 10) 56 #define HW3 IMX_GPIO_NR(6, 11) 57 #define HW4 IMX_GPIO_NR(4, 7) 58 #define HW5 IMX_GPIO_NR(4, 11) 59 #define HW6 IMX_GPIO_NR(4, 13) 60 #define HW7 IMX_GPIO_NR(4, 15) 61 62 int gpio_table_sw_ids[] = { 63 SW0, SW1, SW2, SW3 64 }; 65 66 const char *gpio_table_sw_ids_names[] = { 67 "sw0", "sw1", "sw2", "sw3" 68 }; 69 70 int gpio_table_hw_ids[] = { 71 HW0, HW1, HW2, HW3, HW4, HW5, HW6, HW7 72 }; 73 74 const char *gpio_table_hw_ids_names[] = { 75 "hw0", "hw1", "hw2", "hw3", "hw4", "hw5", "hw6", "hw7" 76 }; 77 get_board_id(int * ids,const char ** c,int size,bool * valid,u32 * id)78 static int get_board_id(int *ids, const char **c, int size, 79 bool *valid, u32 *id) 80 { 81 int i, ret, val; 82 83 *valid = false; 84 85 for (i = 0; i < size; i++) { 86 ret = gpio_request(ids[i], c[i]); 87 if (ret) { 88 printf("Can't request SWx gpios\n"); 89 return ret; 90 } 91 } 92 93 for (i = 0; i < size; i++) { 94 ret = gpio_direction_input(ids[i]); 95 if (ret) { 96 printf("Can't set SWx gpios direction\n"); 97 return ret; 98 } 99 } 100 101 for (i = 0; i < size; i++) { 102 val = gpio_get_value(ids[i]); 103 if (val < 0) { 104 printf("Can't get SW%d ID\n", i); 105 *id = 0; 106 return val; 107 } 108 *id |= val << i; 109 } 110 *valid = true; 111 112 return 0; 113 } 114 dram_init(void)115 int dram_init(void) 116 { 117 gd->ram_size = imx_ddr_size(); 118 119 return 0; 120 } 121 122 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL) 123 /* I2C1: TFA9879 */ 124 struct i2c_pads_info i2c_pad_info0 = { 125 .scl = { 126 .i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC, 127 .gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC, 128 .gp = IMX_GPIO_NR(3, 21) 129 }, 130 .sda = { 131 .i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC, 132 .gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC, 133 .gp = IMX_GPIO_NR(3, 28) 134 } 135 }; 136 137 /* I2C2: TIVO TM4C123 */ 138 struct i2c_pads_info i2c_pad_info1 = { 139 .scl = { 140 .i2c_mode = MX6_PAD_EIM_EB2__I2C2_SCL | PC, 141 .gpio_mode = MX6_PAD_EIM_EB2__GPIO2_IO30 | PC, 142 .gp = IMX_GPIO_NR(2, 30) 143 }, 144 .sda = { 145 .i2c_mode = MX6_PAD_EIM_D16__I2C2_SDA | PC, 146 .gpio_mode = MX6_PAD_EIM_D16__GPIO3_IO16 | PC, 147 .gp = IMX_GPIO_NR(3, 16) 148 } 149 }; 150 151 /* I2C3: PMIC PF0100, EEPROM AT24C256C */ 152 struct i2c_pads_info i2c_pad_info2 = { 153 .scl = { 154 .i2c_mode = MX6_PAD_EIM_D17__I2C3_SCL | PC, 155 .gpio_mode = MX6_PAD_EIM_D17__GPIO3_IO17 | PC, 156 .gp = IMX_GPIO_NR(3, 17) 157 }, 158 .sda = { 159 .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC, 160 .gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC, 161 .gp = IMX_GPIO_NR(3, 18) 162 } 163 }; 164 165 iomux_v3_cfg_t const misc_pads[] = { 166 /* Prod ID GPIO pins */ 167 MX6_PAD_NANDF_D4__GPIO2_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), 168 MX6_PAD_NANDF_D5__GPIO2_IO05 | MUX_PAD_CTRL(NO_PAD_CTRL), 169 MX6_PAD_NANDF_D6__GPIO2_IO06 | MUX_PAD_CTRL(NO_PAD_CTRL), 170 MX6_PAD_NANDF_D7__GPIO2_IO07 | MUX_PAD_CTRL(NO_PAD_CTRL), 171 172 /* HW revision GPIO pins */ 173 MX6_PAD_NANDF_CLE__GPIO6_IO07 | MUX_PAD_CTRL(NO_PAD_CTRL), 174 MX6_PAD_NANDF_WP_B__GPIO6_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL), 175 MX6_PAD_NANDF_RB0__GPIO6_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL), 176 MX6_PAD_NANDF_CS0__GPIO6_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL), 177 MX6_PAD_KEY_ROW0__GPIO4_IO07 | MUX_PAD_CTRL(NO_PAD_CTRL), 178 MX6_PAD_KEY_ROW2__GPIO4_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL), 179 MX6_PAD_KEY_ROW3__GPIO4_IO13 | MUX_PAD_CTRL(NO_PAD_CTRL), 180 MX6_PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL), 181 182 /* XTALOSC */ 183 MX6_PAD_GPIO_3__XTALOSC_REF_CLK_24M | MUX_PAD_CTRL(NO_PAD_CTRL), 184 185 /* Emergency recovery pin */ 186 MX6_PAD_EIM_D29__GPIO3_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL), 187 }; 188 189 #ifdef CONFIG_FSL_ESDHC 190 struct fsl_esdhc_cfg usdhc_cfg[1] = { 191 { USDHC4_BASE_ADDR, 0, 8, }, 192 }; 193 board_mmc_getcd(struct mmc * mmc)194 int board_mmc_getcd(struct mmc *mmc) 195 { 196 return 1; 197 } 198 board_mmc_init(bd_t * bis)199 int board_mmc_init(bd_t *bis) 200 { 201 displ5_set_iomux_usdhc(); 202 203 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK); 204 205 return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); 206 } 207 #endif /* CONFIG_FSL_ESDHC */ 208 displ5_setup_ecspi(void)209 static void displ5_setup_ecspi(void) 210 { 211 int ret; 212 213 displ5_set_iomux_ecspi(); 214 215 ret = gpio_request(IMX_GPIO_NR(5, 29), "spi2_cs0"); 216 if (!ret) 217 gpio_direction_output(IMX_GPIO_NR(5, 29), 1); 218 219 ret = gpio_request(IMX_GPIO_NR(7, 0), "spi2_#wp"); 220 if (!ret) 221 gpio_direction_output(IMX_GPIO_NR(7, 0), 1); 222 } 223 224 #ifdef CONFIG_FEC_MXC 225 iomux_v3_cfg_t const enet_pads[] = { 226 MX6_PAD_ENET_TXD1__ENET_1588_EVENT0_IN | MUX_PAD_CTRL(ENET_PAD_CTRL), 227 MX6_PAD_ENET_RXD1__ENET_1588_EVENT3_OUT | MUX_PAD_CTRL(ENET_PAD_CTRL), 228 MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL), 229 MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL), 230 MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL), 231 232 /* for old evalboard with R159 present and R160 not populated */ 233 MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(NO_PAD_CTRL), 234 235 MX6_PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL), 236 MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL), 237 MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL), 238 MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL), 239 MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL), 240 MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL), 241 242 MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL), 243 MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL), 244 MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL), 245 MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL), 246 MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL), 247 MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL), 248 /*INT#_GBE*/ 249 MX6_PAD_ENET_TX_EN__GPIO1_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL), 250 }; 251 setup_iomux_enet(void)252 static void setup_iomux_enet(void) 253 { 254 SETUP_IOMUX_PADS(enet_pads); 255 gpio_direction_input(IMX_GPIO_NR(1, 28)); /*INT#_GBE*/ 256 } 257 setup_mac_from_fuse(void)258 static int setup_mac_from_fuse(void) 259 { 260 unsigned char enetaddr[6]; 261 int ret; 262 263 ret = eth_env_get_enetaddr("ethaddr", enetaddr); 264 if (ret) /* ethaddr is already set */ 265 return 0; 266 267 imx_get_mac_from_fuse(0, enetaddr); 268 269 if (is_valid_ethaddr(enetaddr)) { 270 eth_env_set_enetaddr("ethaddr", enetaddr); 271 return 0; 272 } 273 274 return 0; 275 } 276 board_eth_init(bd_t * bd)277 int board_eth_init(bd_t *bd) 278 { 279 struct phy_device *phydev; 280 struct mii_dev *bus; 281 int ret; 282 283 setup_iomux_enet(); 284 285 iomuxc_set_rgmii_io_voltage(DDR_SEL_1P5V_IO); 286 287 ret = enable_fec_anatop_clock(0, ENET_125MHZ); 288 if (ret) 289 return ret; 290 291 setup_mac_from_fuse(); 292 293 bus = fec_get_miibus(IMX_FEC_BASE, -1); 294 if (!bus) 295 return -ENODEV; 296 297 /* 298 * We use here the "rgmii-id" mode of operation and allow M88E1512 299 * PHY to use its internally callibrated RX/TX delays 300 */ 301 phydev = phy_find_by_mask(bus, 0xffffffff /* (0xf << 4) */, 302 PHY_INTERFACE_MODE_RGMII_ID); 303 if (!phydev) { 304 ret = -ENODEV; 305 goto err_phy; 306 } 307 308 /* display5 due to PCB routing can only work with 100 Mbps */ 309 phydev->advertising &= ~(ADVERTISED_1000baseX_Half | 310 ADVERTISED_1000baseX_Full | 311 SUPPORTED_1000baseT_Half | 312 SUPPORTED_1000baseT_Full); 313 314 ret = fec_probe(bd, -1, IMX_FEC_BASE, bus, phydev); 315 if (ret) 316 goto err_sw; 317 318 return 0; 319 320 err_sw: 321 free(phydev); 322 err_phy: 323 mdio_unregister(bus); 324 free(bus); 325 return ret; 326 } 327 #endif /* CONFIG_FEC_MXC */ 328 329 /* 330 * Do not overwrite the console 331 * Always use serial for U-Boot console 332 */ overwrite_console(void)333 int overwrite_console(void) 334 { 335 return 1; 336 } 337 338 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) ft_board_setup(void * blob,bd_t * bd)339 int ft_board_setup(void *blob, bd_t *bd) 340 { 341 fdt_fixup_ethernet(blob); 342 return 0; 343 } 344 #endif 345 board_init(void)346 int board_init(void) 347 { 348 debug("board init\n"); 349 /* address of boot parameters */ 350 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 351 352 /* Setup iomux for non console UARTS */ 353 displ5_set_iomux_uart(); 354 355 displ5_setup_ecspi(); 356 357 SETUP_IOMUX_PADS(misc_pads); 358 359 get_board_id(gpio_table_sw_ids, &gpio_table_sw_ids_names[0], 360 ARRAY_SIZE(gpio_table_sw_ids), &sw_ids_valid, &unit_id); 361 debug("SWx unit_id 0x%x\n", unit_id); 362 363 get_board_id(gpio_table_hw_ids, &gpio_table_hw_ids_names[0], 364 ARRAY_SIZE(gpio_table_hw_ids), &hw_ids_valid, &cpu_id); 365 debug("HWx cpu_id 0x%x\n", cpu_id); 366 367 if (hw_ids_valid && sw_ids_valid) 368 printf("ID: unit type 0x%x rev 0x%x\n", unit_id, cpu_id); 369 370 udelay(25); 371 372 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0); 373 setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); 374 setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2); 375 376 return 0; 377 } 378 379 #ifdef CONFIG_CMD_BMODE 380 static const struct boot_mode board_boot_modes[] = { 381 /* eMMC, USDHC-4, 8-bit bus width */ 382 /* SPI-NOR, ECSPI-2 SS0, 3-bytes addressing */ 383 {"emmc", MAKE_CFGVAL(0x60, 0x58, 0x00, 0x00)}, 384 {"spinor", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x09)}, 385 {NULL, 0}, 386 }; 387 setup_boot_modes(void)388 static void setup_boot_modes(void) 389 { 390 add_board_boot_modes(board_boot_modes); 391 } 392 #else setup_boot_modes(void)393 static inline void setup_boot_modes(void) {} 394 #endif 395 misc_init_r(void)396 int misc_init_r(void) 397 { 398 int ret; 399 400 setup_boot_modes(); 401 402 ret = gpio_request(EM_PAD, "Emergency_PAD"); 403 if (ret) { 404 printf("Can't request emergency PAD gpio\n"); 405 return ret; 406 } 407 408 ret = gpio_direction_input(EM_PAD); 409 if (ret) { 410 printf("Can't set emergency PAD direction\n"); 411 return ret; 412 } 413 414 return 0; 415 } 416 417 static struct mxc_serial_platdata mxc_serial_plat = { 418 .reg = (struct mxc_uart *)UART5_BASE, 419 }; 420 421 U_BOOT_DEVICE(mxc_serial) = { 422 .name = "serial_mxc", 423 .platdata = &mxc_serial_plat, 424 }; 425