1 /* 2 * Copyright (C) 2017 Stefano Babic <sbabic@denx.de> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <asm/io.h> 9 #include <asm/arch/clock.h> 10 #include <asm/arch/imx-regs.h> 11 #include <asm/arch/iomux.h> 12 #include <asm/arch/crm_regs.h> 13 #include <asm/arch/iomux.h> 14 #include <asm/arch/mx6-pins.h> 15 #include <asm/mach-imx/iomux-v3.h> 16 #include <asm/mach-imx/boot_mode.h> 17 #include <asm/mach-imx/mxc_i2c.h> 18 #include <asm/mach-imx/spi.h> 19 #include <linux/errno.h> 20 #include <asm/gpio.h> 21 #include <mmc.h> 22 #include <i2c.h> 23 #include <fsl_esdhc.h> 24 #include <nand.h> 25 #include <miiphy.h> 26 #include <netdev.h> 27 #include <asm/arch/sys_proto.h> 28 #include <asm/sections.h> 29 30 DECLARE_GLOBAL_DATA_PTR; 31 32 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 33 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ 34 PAD_CTL_SRE_FAST | PAD_CTL_HYS) 35 36 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \ 37 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ 38 PAD_CTL_SRE_FAST | PAD_CTL_HYS) 39 40 #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 41 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) 42 43 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \ 44 PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST) 45 46 #define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 47 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ 48 PAD_CTL_ODE | PAD_CTL_SRE_FAST) 49 50 #define I2C_PAD MUX_PAD_CTRL(I2C_PAD_CTRL) 51 52 #define ASRC_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \ 53 PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST) 54 55 #define NAND_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ 56 PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST) 57 58 #define ENET_PHY_RESET_GPIO IMX_GPIO_NR(1, 14) 59 #define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4) 60 #define GREEN_LED IMX_GPIO_NR(2, 31) 61 #define RED_LED IMX_GPIO_NR(1, 30) 62 #define IMX6Q_DRIVE_STRENGTH 0x30 63 64 int dram_init(void) 65 { 66 gd->ram_size = imx_ddr_size(); 67 return 0; 68 } 69 70 static iomux_v3_cfg_t const uart4_pads[] = { 71 IOMUX_PADS(PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), 72 IOMUX_PADS(PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), 73 }; 74 75 static iomux_v3_cfg_t const enet_pads[] = { 76 IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)), 77 IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 78 IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 79 IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 80 IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 81 IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 82 IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 83 IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | 84 MUX_PAD_CTRL(ENET_PAD_CTRL)), 85 IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | 86 MUX_PAD_CTRL(ENET_PAD_CTRL)), 87 IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 88 IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 89 IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 90 IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 91 IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 92 IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | 93 MUX_PAD_CTRL(ENET_PAD_CTRL)), 94 IOMUX_PADS(PAD_SD2_DAT1__GPIO1_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL)), 95 }; 96 97 static iomux_v3_cfg_t const ecspi3_pads[] = { 98 IOMUX_PADS(PAD_DISP0_DAT0__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL)), 99 IOMUX_PADS(PAD_DISP0_DAT1__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL)), 100 IOMUX_PADS(PAD_DISP0_DAT2__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL)), 101 IOMUX_PADS(PAD_DISP0_DAT3__GPIO4_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL)), 102 }; 103 104 static iomux_v3_cfg_t const gpios_pads[] = { 105 IOMUX_PADS(PAD_SD4_DAT3__GPIO2_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL)), 106 IOMUX_PADS(PAD_SD4_DAT4__GPIO2_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL)), 107 IOMUX_PADS(PAD_SD4_DAT5__GPIO2_IO13 | MUX_PAD_CTRL(NO_PAD_CTRL)), 108 IOMUX_PADS(PAD_SD4_DAT6__GPIO2_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL)), 109 IOMUX_PADS(PAD_SD4_DAT7__GPIO2_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL)), 110 IOMUX_PADS(PAD_EIM_EB3__GPIO2_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)), 111 IOMUX_PADS(PAD_ENET_TXD0__GPIO1_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL)), 112 IOMUX_PADS(PAD_SD4_DAT3__GPIO2_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL)), 113 }; 114 115 #ifdef CONFIG_CMD_NAND 116 /* NAND */ 117 static iomux_v3_cfg_t const nfc_pads[] = { 118 IOMUX_PADS(PAD_NANDF_CLE__NAND_CLE | MUX_PAD_CTRL(NAND_PAD_CTRL)), 119 IOMUX_PADS(PAD_NANDF_ALE__NAND_ALE | MUX_PAD_CTRL(NAND_PAD_CTRL)), 120 IOMUX_PADS(PAD_NANDF_WP_B__NAND_WP_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 121 IOMUX_PADS(PAD_NANDF_RB0__NAND_READY_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 122 IOMUX_PADS(PAD_NANDF_CS0__NAND_CE0_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 123 IOMUX_PADS(PAD_NANDF_CS1__NAND_CE1_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 124 IOMUX_PADS(PAD_NANDF_CS2__NAND_CE2_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 125 IOMUX_PADS(PAD_NANDF_CS3__NAND_CE3_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 126 IOMUX_PADS(PAD_SD4_CMD__NAND_RE_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 127 IOMUX_PADS(PAD_SD4_CLK__NAND_WE_B | MUX_PAD_CTRL(NAND_PAD_CTRL)), 128 IOMUX_PADS(PAD_NANDF_D0__NAND_DATA00 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 129 IOMUX_PADS(PAD_NANDF_D1__NAND_DATA01 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 130 IOMUX_PADS(PAD_NANDF_D2__NAND_DATA02 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 131 IOMUX_PADS(PAD_NANDF_D3__NAND_DATA03 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 132 IOMUX_PADS(PAD_NANDF_D4__NAND_DATA04 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 133 IOMUX_PADS(PAD_NANDF_D5__NAND_DATA05 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 134 IOMUX_PADS(PAD_NANDF_D6__NAND_DATA06 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 135 IOMUX_PADS(PAD_NANDF_D7__NAND_DATA07 | MUX_PAD_CTRL(NAND_PAD_CTRL)), 136 IOMUX_PADS(PAD_SD4_DAT0__NAND_DQS | MUX_PAD_CTRL(NAND_PAD_CTRL)), 137 }; 138 #endif 139 140 static struct i2c_pads_info i2c_pad_info = { 141 .scl = { 142 .i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | I2C_PAD, 143 .gpio_mode = MX6Q_PAD_EIM_D21__GPIO3_IO21 | I2C_PAD, 144 .gp = IMX_GPIO_NR(3, 21) 145 }, 146 .sda = { 147 .i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | I2C_PAD, 148 .gpio_mode = MX6Q_PAD_EIM_D28__GPIO3_IO28 | I2C_PAD, 149 .gp = IMX_GPIO_NR(3, 28) 150 } 151 }; 152 153 static struct fsl_esdhc_cfg usdhc_cfg[] = { 154 {USDHC3_BASE_ADDR, 155 .max_bus_width = 4}, 156 {.esdhc_base = USDHC2_BASE_ADDR, 157 .max_bus_width = 4}, 158 }; 159 160 #if !defined(CONFIG_SPL_BUILD) 161 static iomux_v3_cfg_t const usdhc2_pads[] = { 162 IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 163 IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 164 IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 165 IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 166 IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 167 IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 168 IOMUX_PADS(PAD_EIM_BCLK__GPIO6_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)), 169 IOMUX_PADS(PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)), 170 }; 171 #endif 172 173 static iomux_v3_cfg_t const usdhc3_pads[] = { 174 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 175 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 176 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 177 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 178 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 179 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 180 IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 181 IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 182 IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 183 IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 184 }; 185 186 int board_mmc_get_env_dev(int devno) 187 { 188 return devno - 1; 189 } 190 191 int board_mmc_getcd(struct mmc *mmc) 192 { 193 struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; 194 int ret = 0; 195 196 switch (cfg->esdhc_base) { 197 case USDHC2_BASE_ADDR: 198 ret = !gpio_get_value(USDHC2_CD_GPIO); 199 ret = 1; 200 break; 201 case USDHC3_BASE_ADDR: 202 ret = 1; 203 break; 204 } 205 206 return ret; 207 } 208 209 #ifndef CONFIG_SPL_BUILD 210 int board_mmc_init(bd_t *bis) 211 { 212 int ret; 213 int i; 214 215 for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { 216 switch (i) { 217 case 0: 218 SETUP_IOMUX_PADS(usdhc3_pads); 219 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); 220 break; 221 case 1: 222 SETUP_IOMUX_PADS(usdhc2_pads); 223 gpio_direction_input(USDHC2_CD_GPIO); 224 usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 225 break; 226 default: 227 printf("Warning: you configured more USDHC controllers" 228 "(%d) then supported by the board (%d)\n", 229 i + 1, CONFIG_SYS_FSL_USDHC_NUM); 230 return -EINVAL; 231 } 232 233 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]); 234 if (ret) 235 return ret; 236 } 237 238 return 0; 239 } 240 #endif 241 242 static void setup_iomux_uart(void) 243 { 244 SETUP_IOMUX_PADS(uart4_pads); 245 } 246 247 static void setup_iomux_enet(void) 248 { 249 SETUP_IOMUX_PADS(enet_pads); 250 251 gpio_direction_output(ENET_PHY_RESET_GPIO, 0); 252 mdelay(10); 253 gpio_set_value(ENET_PHY_RESET_GPIO, 1); 254 mdelay(30); 255 } 256 257 static void setup_spi(void) 258 { 259 gpio_request(IMX_GPIO_NR(4, 24), "spi_cs0"); 260 gpio_direction_output(IMX_GPIO_NR(4, 24), 1); 261 262 SETUP_IOMUX_PADS(ecspi3_pads); 263 264 enable_spi_clk(true, 2); 265 } 266 267 static void setup_gpios(void) 268 { 269 SETUP_IOMUX_PADS(gpios_pads); 270 } 271 272 #ifdef CONFIG_CMD_NAND 273 static void setup_gpmi_nand(void) 274 { 275 struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; 276 277 /* config gpmi nand iomux */ 278 SETUP_IOMUX_PADS(nfc_pads); 279 280 /* gate ENFC_CLK_ROOT clock first,before clk source switch */ 281 clrbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK); 282 283 /* config gpmi and bch clock to 100 MHz */ 284 clrsetbits_le32(&mxc_ccm->cs2cdr, 285 MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK | 286 MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK | 287 MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK, 288 MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) | 289 MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) | 290 MXC_CCM_CS2CDR_ENFC_CLK_SEL(3)); 291 292 /* enable ENFC_CLK_ROOT clock */ 293 setbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK); 294 295 /* enable gpmi and bch clock gating */ 296 setbits_le32(&mxc_ccm->CCGR4, 297 MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK | 298 MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK | 299 MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK | 300 MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK | 301 MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_OFFSET); 302 303 /* enable apbh clock gating */ 304 setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK); 305 } 306 #endif 307 308 /* 309 * Board revision is coded in 4 GPIOs 310 */ 311 u32 get_board_rev(void) 312 { 313 u32 rev; 314 int i; 315 316 for (i = 0, rev = 0; i < 4; i++) 317 rev |= (gpio_get_value(IMX_GPIO_NR(2, 12 + i)) << i); 318 319 return 16 - rev; 320 } 321 322 int board_spi_cs_gpio(unsigned bus, unsigned cs) 323 { 324 if (bus != 2 || (cs != 0)) 325 return -EINVAL; 326 327 return IMX_GPIO_NR(4, 24); 328 } 329 330 int board_eth_init(bd_t *bis) 331 { 332 setup_iomux_enet(); 333 334 return cpu_eth_init(bis); 335 } 336 337 int board_early_init_f(void) 338 { 339 setup_iomux_uart(); 340 341 return 0; 342 } 343 344 int board_init(void) 345 { 346 /* address of boot parameters */ 347 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 348 349 #ifdef CONFIG_SYS_I2C_MXC 350 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info); 351 #endif 352 353 #ifdef CONFIG_MXC_SPI 354 setup_spi(); 355 #endif 356 357 setup_gpios(); 358 359 #ifdef CONFIG_CMD_NAND 360 setup_gpmi_nand(); 361 #endif 362 return 0; 363 } 364 365 366 #ifdef CONFIG_CMD_BMODE 367 /* 368 * BOOT_CFG1, BOOT_CFG2, BOOT_CFG3, BOOT_CFG4 369 * see Table 8-11 and Table 5-9 370 * BOOT_CFG1[7] = 1 (boot from NAND) 371 * BOOT_CFG1[5] = 0 - raw NAND 372 * BOOT_CFG1[4] = 0 - default pad settings 373 * BOOT_CFG1[3:2] = 00 - devices = 1 374 * BOOT_CFG1[1:0] = 00 - Row Address Cycles = 3 375 * BOOT_CFG2[4:3] = 00 - Boot Search Count = 2 376 * BOOT_CFG2[2:1] = 01 - Pages In Block = 64 377 * BOOT_CFG2[0] = 0 - Reset time 12ms 378 */ 379 static const struct boot_mode board_boot_modes[] = { 380 /* NAND: 64pages per block, 3 row addr cycles, 2 copies of FCB/DBBT */ 381 {"nand", MAKE_CFGVAL(0x80, 0x02, 0x00, 0x00)}, 382 {"mmc0", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)}, 383 {NULL, 0}, 384 }; 385 #endif 386 387 int board_late_init(void) 388 { 389 char buf[10]; 390 #ifdef CONFIG_CMD_BMODE 391 add_board_boot_modes(board_boot_modes); 392 #endif 393 394 snprintf(buf, sizeof(buf), "%d", get_board_rev()); 395 env_set("board_rev", buf); 396 397 return 0; 398 } 399 400 #ifdef CONFIG_SPL_BUILD 401 #include <asm/arch/mx6-ddr.h> 402 #include <spl.h> 403 #include <libfdt.h> 404 405 #define MX6_PHYFLEX_ERR006282 IMX_GPIO_NR(2, 11) 406 static void phyflex_err006282_workaround(void) 407 { 408 /* 409 * Boards beginning with 1362.2 have the SD4_DAT3 pin connected 410 * to the CMIC. If this pin isn't toggled within 10s the boards 411 * reset. The pin is unconnected on older boards, so we do not 412 * need a check for older boards before applying this fixup. 413 */ 414 415 gpio_direction_output(MX6_PHYFLEX_ERR006282, 0); 416 mdelay(2); 417 gpio_direction_output(MX6_PHYFLEX_ERR006282, 1); 418 mdelay(2); 419 gpio_set_value(MX6_PHYFLEX_ERR006282, 0); 420 421 gpio_direction_input(MX6_PHYFLEX_ERR006282); 422 } 423 424 static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = { 425 .dram_sdclk_0 = 0x00000030, 426 .dram_sdclk_1 = 0x00000030, 427 .dram_cas = 0x00000030, 428 .dram_ras = 0x00000030, 429 .dram_reset = 0x00000030, 430 .dram_sdcke0 = 0x00003000, 431 .dram_sdcke1 = 0x00003000, 432 .dram_sdba2 = 0x00000030, 433 .dram_sdodt0 = 0x00000030, 434 .dram_sdodt1 = 0x00000030, 435 436 .dram_sdqs0 = 0x00000028, 437 .dram_sdqs1 = 0x00000028, 438 .dram_sdqs2 = 0x00000028, 439 .dram_sdqs3 = 0x00000028, 440 .dram_sdqs4 = 0x00000028, 441 .dram_sdqs5 = 0x00000028, 442 .dram_sdqs6 = 0x00000028, 443 .dram_sdqs7 = 0x00000028, 444 .dram_dqm0 = 0x00000028, 445 .dram_dqm1 = 0x00000028, 446 .dram_dqm2 = 0x00000028, 447 .dram_dqm3 = 0x00000028, 448 .dram_dqm4 = 0x00000028, 449 .dram_dqm5 = 0x00000028, 450 .dram_dqm6 = 0x00000028, 451 .dram_dqm7 = 0x00000028, 452 }; 453 454 static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = { 455 .grp_ddr_type = 0x000C0000, 456 .grp_ddrmode_ctl = 0x00020000, 457 .grp_ddrpke = 0x00000000, 458 .grp_addds = IMX6Q_DRIVE_STRENGTH, 459 .grp_ctlds = IMX6Q_DRIVE_STRENGTH, 460 .grp_ddrmode = 0x00020000, 461 .grp_b0ds = 0x00000028, 462 .grp_b1ds = 0x00000028, 463 .grp_b2ds = 0x00000028, 464 .grp_b3ds = 0x00000028, 465 .grp_b4ds = 0x00000028, 466 .grp_b5ds = 0x00000028, 467 .grp_b6ds = 0x00000028, 468 .grp_b7ds = 0x00000028, 469 }; 470 471 static const struct mx6_mmdc_calibration mx6_mmcd_calib = { 472 .p0_mpwldectrl0 = 0x00110011, 473 .p0_mpwldectrl1 = 0x00240024, 474 .p1_mpwldectrl0 = 0x00260038, 475 .p1_mpwldectrl1 = 0x002C0038, 476 .p0_mpdgctrl0 = 0x03400350, 477 .p0_mpdgctrl1 = 0x03440340, 478 .p1_mpdgctrl0 = 0x034C0354, 479 .p1_mpdgctrl1 = 0x035C033C, 480 .p0_mprddlctl = 0x322A2A2A, 481 .p1_mprddlctl = 0x302C2834, 482 .p0_mpwrdlctl = 0x34303834, 483 .p1_mpwrdlctl = 0x422A3E36, 484 }; 485 486 /* Index in RAM Chip array */ 487 enum { 488 RAM_MT64K, 489 RAM_MT128K, 490 RAM_MT256K 491 }; 492 493 static struct mx6_ddr3_cfg mt41k_xx[] = { 494 /* MT41K64M16JT-125 (1Gb density) */ 495 { 496 .mem_speed = 1600, 497 .density = 1, 498 .width = 16, 499 .banks = 8, 500 .rowaddr = 13, 501 .coladdr = 10, 502 .pagesz = 2, 503 .trcd = 1375, 504 .trcmin = 4875, 505 .trasmin = 3500, 506 .SRT = 1, 507 }, 508 509 /* MT41K256M16JT-125 (2Gb density) */ 510 { 511 .mem_speed = 1600, 512 .density = 2, 513 .width = 16, 514 .banks = 8, 515 .rowaddr = 14, 516 .coladdr = 10, 517 .pagesz = 2, 518 .trcd = 1375, 519 .trcmin = 4875, 520 .trasmin = 3500, 521 .SRT = 1, 522 }, 523 524 /* MT41K256M16JT-125 (4Gb density) */ 525 { 526 .mem_speed = 1600, 527 .density = 4, 528 .width = 16, 529 .banks = 8, 530 .rowaddr = 15, 531 .coladdr = 10, 532 .pagesz = 2, 533 .trcd = 1375, 534 .trcmin = 4875, 535 .trasmin = 3500, 536 .SRT = 1, 537 } 538 }; 539 540 static void ccgr_init(void) 541 { 542 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; 543 544 writel(0x00C03F3F, &ccm->CCGR0); 545 writel(0x0030FC03, &ccm->CCGR1); 546 writel(0x0FFFC000, &ccm->CCGR2); 547 writel(0x3FF00000, &ccm->CCGR3); 548 writel(0x00FFF300, &ccm->CCGR4); 549 writel(0x0F0000C3, &ccm->CCGR5); 550 writel(0x000003FF, &ccm->CCGR6); 551 } 552 553 static void spl_dram_init(struct mx6_ddr_sysinfo *sysinfo, 554 struct mx6_ddr3_cfg *mem_ddr) 555 { 556 mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs); 557 mx6_dram_cfg(sysinfo, &mx6_mmcd_calib, mem_ddr); 558 } 559 560 int board_mmc_init(bd_t *bis) 561 { 562 if (spl_boot_device() == BOOT_DEVICE_SPI) 563 printf("MMC SEtup, Boot SPI"); 564 565 SETUP_IOMUX_PADS(usdhc3_pads); 566 usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR; 567 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); 568 usdhc_cfg[0].max_bus_width = 4; 569 gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk; 570 571 return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); 572 } 573 574 575 void board_boot_order(u32 *spl_boot_list) 576 { 577 spl_boot_list[0] = spl_boot_device(); 578 printf("Boot device %x\n", spl_boot_list[0]); 579 switch (spl_boot_list[0]) { 580 case BOOT_DEVICE_SPI: 581 spl_boot_list[1] = BOOT_DEVICE_UART; 582 break; 583 case BOOT_DEVICE_MMC1: 584 spl_boot_list[1] = BOOT_DEVICE_SPI; 585 spl_boot_list[2] = BOOT_DEVICE_UART; 586 break; 587 default: 588 printf("Boot device %x\n", spl_boot_list[0]); 589 } 590 } 591 592 /* 593 * This is used because get_ram_size() does not 594 * take care of cache, resulting a wrong size 595 * pfla02 has just 1, 2 or 4 GB option 596 * Function checks for mirrors in the first CS 597 */ 598 #define RAM_TEST_PATTERN 0xaa5555aa 599 #define MIN_BANK_SIZE (512 * 1024 * 1024) 600 601 static unsigned int pfla02_detect_chiptype(void) 602 { 603 u32 *p, *p1; 604 unsigned int offset = MIN_BANK_SIZE; 605 int i; 606 607 for (i = 0; i < 2; i++) { 608 p = (u32 *)PHYS_SDRAM; 609 p1 = (u32 *)(PHYS_SDRAM + (i + 1) * offset); 610 611 *p1 = 0; 612 *p = RAM_TEST_PATTERN; 613 614 /* 615 * This is required to detect mirroring 616 * else we read back values from cache 617 */ 618 flush_dcache_all(); 619 620 if (*p == *p1) 621 return i; 622 } 623 return RAM_MT256K; 624 } 625 626 void board_init_f(ulong dummy) 627 { 628 unsigned int ramchip; 629 630 struct mx6_ddr_sysinfo sysinfo = { 631 /* width of data bus:0=16,1=32,2=64 */ 632 .dsize = 2, 633 /* config for full 4GB range so that get_mem_size() works */ 634 .cs_density = 32, /* 512 MB */ 635 /* single chip select */ 636 #if IS_ENABLED(CONFIG_SPL_DRAM_1_BANK) 637 .ncs = 1, 638 #else 639 .ncs = 2, 640 #endif 641 .cs1_mirror = 1, 642 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */ 643 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */ 644 .walat = 1, /* Write additional latency */ 645 .ralat = 5, /* Read additional latency */ 646 .mif3_mode = 3, /* Command prediction working mode */ 647 .bi_on = 1, /* Bank interleaving enabled */ 648 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ 649 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ 650 .ddr_type = DDR_TYPE_DDR3, 651 .refsel = 1, /* Refresh cycles at 32KHz */ 652 .refr = 7, /* 8 refresh commands per refresh cycle */ 653 }; 654 655 #ifdef CONFIG_CMD_NAND 656 /* Enable NAND */ 657 setup_gpmi_nand(); 658 #endif 659 660 /* setup clock gating */ 661 ccgr_init(); 662 663 /* setup AIPS and disable watchdog */ 664 arch_cpu_init(); 665 666 /* setup AXI */ 667 gpr_init(); 668 669 board_early_init_f(); 670 671 /* setup GP timer */ 672 timer_init(); 673 674 /* UART clocks enabled and gd valid - init serial console */ 675 preloader_console_init(); 676 677 setup_spi(); 678 679 setup_gpios(); 680 681 /* DDR initialization */ 682 spl_dram_init(&sysinfo, &mt41k_xx[RAM_MT256K]); 683 ramchip = pfla02_detect_chiptype(); 684 debug("Detected chip %d\n", ramchip); 685 #if !IS_ENABLED(CONFIG_SPL_DRAM_1_BANK) 686 switch (ramchip) { 687 case RAM_MT64K: 688 sysinfo.cs_density = 6; 689 break; 690 case RAM_MT128K: 691 sysinfo.cs_density = 10; 692 break; 693 case RAM_MT256K: 694 sysinfo.cs_density = 18; 695 break; 696 } 697 #endif 698 spl_dram_init(&sysinfo, &mt41k_xx[ramchip]); 699 700 /* Clear the BSS. */ 701 memset(__bss_start, 0, __bss_end - __bss_start); 702 703 phyflex_err006282_workaround(); 704 705 /* load/boot image from boot device */ 706 board_init_r(NULL, 0); 707 } 708 #endif 709