5 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
8 * Board functions for TI AM335X based boards
10 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
12 * SPDX-License-Identifier: GPL-2.0+
18 #include <asm/arch/cpu.h>
19 #include <asm/arch/hardware.h>
20 #include <asm/arch/omap.h>
21 #include <asm/arch/ddr_defs.h>
22 #include <asm/arch/clock.h>
23 #include <asm/arch/gpio.h>
24 #include <asm/arch/mmc_host_def.h>
25 #include <asm/arch/sys_proto.h>
26 #include <asm/arch/mem.h>
33 #include <power/tps65217.h>
34 #include <environment.h>
36 #include <environment.h>
40 DECLARE_GLOBAL_DATA_PTR;
42 #if defined(CONFIG_SPL_BUILD) || \
43 (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_DM_ETH))
44 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
46 static struct shc_eeprom __attribute__((section(".data"))) header;
47 static int shc_eeprom_valid;
50 * Read header information from EEPROM into global structure.
52 static int read_eeprom(void)
54 /* Check if baseboard eeprom is available */
55 if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
56 puts("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
60 /* read the eeprom using i2c */
61 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header,
63 puts("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n");
67 if (header.magic != HDR_MAGIC) {
68 printf("Incorrect magic number (0x%x) in EEPROM\n",
78 static void shc_request_gpio(void)
80 gpio_request(LED_PWR_BL_GPIO, "LED PWR BL");
81 gpio_request(LED_PWR_RD_GPIO, "LED PWR RD");
82 gpio_request(RESET_GPIO, "reset");
83 gpio_request(WIFI_REGEN_GPIO, "WIFI REGEN");
84 gpio_request(WIFI_RST_GPIO, "WIFI rst");
85 gpio_request(ZIGBEE_RST_GPIO, "ZigBee rst");
86 gpio_request(BIDCOS_RST_GPIO, "BIDCOS rst");
87 gpio_request(ENOC_RST_GPIO, "ENOC rst");
88 #if defined CONFIG_B_SAMPLE
89 gpio_request(LED_PWR_GN_GPIO, "LED PWR GN");
90 gpio_request(LED_CONN_BL_GPIO, "LED CONN BL");
91 gpio_request(LED_CONN_RD_GPIO, "LED CONN RD");
92 gpio_request(LED_CONN_GN_GPIO, "LED CONN GN");
94 gpio_request(LED_LAN_BL_GPIO, "LED LAN BL");
95 gpio_request(LED_LAN_RD_GPIO, "LED LAN RD");
96 gpio_request(LED_CLOUD_BL_GPIO, "LED CLOUD BL");
97 gpio_request(LED_CLOUD_RD_GPIO, "LED CLOUD RD");
98 gpio_request(LED_PWM_GPIO, "LED PWM");
99 gpio_request(Z_WAVE_RST_GPIO, "Z WAVE rst");
101 gpio_request(BACK_BUTTON_GPIO, "Back button");
102 gpio_request(FRONT_BUTTON_GPIO, "Front button");
106 * Function which forces all installed modules into running state for ICT
107 * testing. Called by SPL.
109 static void __maybe_unused force_modules_running(void)
111 /* Wi-Fi power regulator enable - high = enabled */
112 gpio_direction_output(WIFI_REGEN_GPIO, 1);
114 * Wait for Wi-Fi power regulator to reach a stable voltage
115 * (soft-start time, max. 350 µs)
119 /* Wi-Fi module reset - high = running */
120 gpio_direction_output(WIFI_RST_GPIO, 1);
122 /* ZigBee reset - high = running */
123 gpio_direction_output(ZIGBEE_RST_GPIO, 1);
125 /* BidCos reset - high = running */
126 gpio_direction_output(BIDCOS_RST_GPIO, 1);
128 #if !defined(CONFIG_B_SAMPLE)
129 /* Z-Wave reset - high = running */
130 gpio_direction_output(Z_WAVE_RST_GPIO, 1);
133 /* EnOcean reset - low = running */
134 gpio_direction_output(ENOC_RST_GPIO, 0);
138 * Function which forces all installed modules into reset - to be released by
139 * the OS, called by SPL
141 static void __maybe_unused force_modules_reset(void)
143 /* Wi-Fi module reset - low = reset */
144 gpio_direction_output(WIFI_RST_GPIO, 0);
146 /* Wi-Fi power regulator enable - low = disabled */
147 gpio_direction_output(WIFI_REGEN_GPIO, 0);
149 /* ZigBee reset - low = reset */
150 gpio_direction_output(ZIGBEE_RST_GPIO, 0);
152 /* BidCos reset - low = reset */
153 /*gpio_direction_output(BIDCOS_RST_GPIO, 0);*/
155 #if !defined(CONFIG_B_SAMPLE)
156 /* Z-Wave reset - low = reset */
157 gpio_direction_output(Z_WAVE_RST_GPIO, 0);
160 /* EnOcean reset - high = reset*/
161 gpio_direction_output(ENOC_RST_GPIO, 1);
165 * Function to set the LEDs in the state "Bootloader booting"
167 static void __maybe_unused leds_set_booting(void)
169 #if defined(CONFIG_B_SAMPLE)
171 /* Turn all red LEDs on */
172 gpio_direction_output(LED_PWR_RD_GPIO, 1);
173 gpio_direction_output(LED_CONN_RD_GPIO, 1);
175 #else /* All other SHCs starting with B2-Sample */
176 /* Set the PWM GPIO */
177 gpio_direction_output(LED_PWM_GPIO, 1);
178 /* Turn all red LEDs on */
179 gpio_direction_output(LED_PWR_RD_GPIO, 1);
180 gpio_direction_output(LED_LAN_RD_GPIO, 1);
181 gpio_direction_output(LED_CLOUD_RD_GPIO, 1);
187 * Function to set the LEDs in the state "Bootloader error"
189 static void leds_set_failure(int state)
191 #if defined(CONFIG_B_SAMPLE)
192 /* Turn all blue and green LEDs off */
193 gpio_set_value(LED_PWR_BL_GPIO, 0);
194 gpio_set_value(LED_PWR_GN_GPIO, 0);
195 gpio_set_value(LED_CONN_BL_GPIO, 0);
196 gpio_set_value(LED_CONN_GN_GPIO, 0);
198 /* Turn all red LEDs to 'state' */
199 gpio_set_value(LED_PWR_RD_GPIO, state);
200 gpio_set_value(LED_CONN_RD_GPIO, state);
202 #else /* All other SHCs starting with B2-Sample */
203 /* Set the PWM GPIO */
204 gpio_direction_output(LED_PWM_GPIO, 1);
206 /* Turn all blue LEDs off */
207 gpio_set_value(LED_PWR_BL_GPIO, 0);
208 gpio_set_value(LED_LAN_BL_GPIO, 0);
209 gpio_set_value(LED_CLOUD_BL_GPIO, 0);
211 /* Turn all red LEDs to 'state' */
212 gpio_set_value(LED_PWR_RD_GPIO, state);
213 gpio_set_value(LED_LAN_RD_GPIO, state);
214 gpio_set_value(LED_CLOUD_RD_GPIO, state);
219 * Function to set the LEDs in the state "Bootloader finished"
221 static void leds_set_finish(void)
223 #if defined(CONFIG_B_SAMPLE)
224 /* Turn all LEDs off */
225 gpio_set_value(LED_PWR_BL_GPIO, 0);
226 gpio_set_value(LED_PWR_RD_GPIO, 0);
227 gpio_set_value(LED_PWR_GN_GPIO, 0);
228 gpio_set_value(LED_CONN_BL_GPIO, 0);
229 gpio_set_value(LED_CONN_RD_GPIO, 0);
230 gpio_set_value(LED_CONN_GN_GPIO, 0);
231 #else /* All other SHCs starting with B2-Sample */
232 /* Turn all LEDs off */
233 gpio_set_value(LED_PWR_BL_GPIO, 0);
234 gpio_set_value(LED_PWR_RD_GPIO, 0);
235 gpio_set_value(LED_LAN_BL_GPIO, 0);
236 gpio_set_value(LED_LAN_RD_GPIO, 0);
237 gpio_set_value(LED_CLOUD_BL_GPIO, 0);
238 gpio_set_value(LED_CLOUD_RD_GPIO, 0);
240 /* Turn off the PWM GPIO and mux it to EHRPWM */
241 gpio_set_value(LED_PWM_GPIO, 0);
242 enable_shc_board_pwm_pin_mux();
246 static void check_button_status(void)
249 gpio_direction_input(FRONT_BUTTON_GPIO);
250 value = gpio_get_value(FRONT_BUTTON_GPIO);
253 printf("front button activated !\n");
254 setenv("harakiri", "1");
258 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
259 #ifdef CONFIG_SPL_OS_BOOT
260 int spl_start_uboot(void)
266 static void shc_board_early_init(void)
269 # ifdef CONFIG_SHC_ICT
270 /* Force all modules into enabled state for ICT testing */
271 force_modules_running();
273 /* Force all modules to enter Reset state until released by the OS */
274 force_modules_reset();
279 #define MPU_SPREADING_PERMILLE 18 /* Spread 1.8 percent */
280 #define OSC (V_OSCK/1000000)
281 /* Bosch: Predivider must be fixed to 4, so N = 4-1 */
282 #define MPUPLL_N (4-1)
283 /* Bosch: Fref = 24 MHz / (N+1) = 24 MHz / 4 = 6 MHz */
284 #define MPUPLL_FREF (OSC / (MPUPLL_N + 1))
286 const struct dpll_params dpll_ddr_shc = {
287 400, OSC-1, 1, -1, -1, -1, -1};
289 const struct dpll_params *get_dpll_ddr_params(void)
291 return &dpll_ddr_shc;
295 * As we enabled downspread SSC with 1.8%, the values needed to be corrected
296 * such that the 20% overshoot will not lead to too high frequencies.
297 * In all cases, this is achieved by subtracting one from M (6 MHz less).
298 * Example: 600 MHz CPU
299 * Step size: 24 MHz OSC, N = 4 (fix) --> Fref = 6 MHz
300 * 600 MHz - 6 MHz (1x Fref) = 594 MHz
301 * SSC: 594 MHz * 1.8% = 10.7 MHz SSC
302 * Overshoot: 10.7 MHz * 20 % = 2.2 MHz
303 * --> Fmax = 594 MHz + 2.2 MHz = 596.2 MHz, lower than 600 MHz --> OK!
305 const struct dpll_params dpll_mpu_shc_opp100 = {
306 99, MPUPLL_N, 1, -1, -1, -1, -1};
308 void am33xx_spl_board_init(void)
316 * Set CORE Frequency to OPP100
317 * Hint: DCDC3 (CORE) defaults to 1.100V (for OPP100)
319 do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
321 sil_rev = readl(&cdev->deviceid) >> 28;
323 puts("We do not support Silicon Revisions below 2.0!\n");
327 dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
328 if (i2c_probe(TPS65217_CHIP_PM))
332 * Retrieve the CPU max frequency by reading the efuse
333 * SHC-Default: 600 MHz
335 switch (dpll_mpu_opp100.m) {
337 mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
340 mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
343 mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV;
346 mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV;
349 mpu_vdd = TPS65217_DCDC_VOLT_SEL_950MV;
352 puts("Cannot determine the frequency, failing!\n");
356 if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
357 puts("tps65217_voltage_update failure\n");
361 /* Set MPU Frequency to what we detected */
362 printf("MPU reference clock runs at %d MHz\n", MPUPLL_FREF);
363 printf("Setting MPU clock to %d MHz\n", MPUPLL_FREF *
364 dpll_mpu_shc_opp100.m);
365 do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_shc_opp100);
367 /* Enable Spread Spectrum for this freq to be clean on EMI side */
368 set_mpu_spreadspectrum(MPU_SPREADING_PERMILLE);
371 * Using the default voltages for the PMIC (TPS65217D)
372 * LS1 = 1.8V (VDD_1V8)
373 * LS2 = 3.3V (VDD_3V3A)
374 * LDO1 = 1.8V (VIO and VRTC)
375 * LDO2 = 3.3V (VDD_3V3AUX)
377 shc_board_early_init();
380 void set_uart_mux_conf(void)
382 enable_uart0_pin_mux();
385 void set_mux_conf_regs(void)
387 enable_shc_board_pin_mux();
390 const struct ctrl_ioregs ioregs_evmsk = {
391 .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
392 .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
393 .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
394 .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
395 .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
398 static const struct ddr_data ddr3_shc_data = {
399 .datardsratio0 = MT41K256M16HA125E_RD_DQS,
400 .datawdsratio0 = MT41K256M16HA125E_WR_DQS,
401 .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
402 .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
405 static const struct cmd_control ddr3_shc_cmd_ctrl_data = {
406 .cmd0csratio = MT41K256M16HA125E_RATIO,
407 .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
409 .cmd1csratio = MT41K256M16HA125E_RATIO,
410 .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
412 .cmd2csratio = MT41K256M16HA125E_RATIO,
413 .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
416 static struct emif_regs ddr3_shc_emif_reg_data = {
417 .sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
418 .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
419 .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
420 .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
421 .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
422 .zq_config = MT41K256M16HA125E_ZQ_CFG,
423 .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY |
427 void sdram_init(void)
429 /* Configure the DDR3 RAM */
430 config_ddr(400, &ioregs_evmsk, &ddr3_shc_data,
431 &ddr3_shc_cmd_ctrl_data, &ddr3_shc_emif_reg_data, 0);
436 * Basic board specific setup. Pinmux has been handled already.
440 #if defined(CONFIG_HW_WATCHDOG)
443 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
444 if (read_eeprom() < 0)
445 puts("EEPROM Content Invalid.\n");
447 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
448 #if defined(CONFIG_NOR) || defined(CONFIG_NAND)
456 #ifdef CONFIG_BOARD_LATE_INIT
457 int board_late_init(void)
459 check_button_status();
460 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
461 if (shc_eeprom_valid)
462 if (is_valid_ethaddr(header.mac_addr))
463 eth_setenv_enetaddr("ethaddr", header.mac_addr);
470 #ifndef CONFIG_DM_ETH
471 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
472 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
473 static void cpsw_control(int enabled)
475 /* VTP can be added here */
480 static struct cpsw_slave_data cpsw_slaves[] = {
482 .slave_reg_ofs = 0x208,
483 .sliver_reg_ofs = 0xd80,
487 .slave_reg_ofs = 0x308,
488 .sliver_reg_ofs = 0xdc0,
493 static struct cpsw_platform_data cpsw_data = {
494 .mdio_base = CPSW_MDIO_BASE,
495 .cpsw_base = CPSW_BASE,
498 .cpdma_reg_ofs = 0x800,
500 .slave_data = cpsw_slaves,
501 .ale_reg_ofs = 0xd00,
503 .host_port_reg_ofs = 0x108,
504 .hw_stats_reg_ofs = 0x900,
505 .bd_ram_ofs = 0x2000,
506 .mac_control = (1 << 5),
507 .control = cpsw_control,
509 .version = CPSW_CTRL_VERSION_2,
514 * This function will:
515 * Read the eFuse for MAC addresses, and set ethaddr/eth1addr/usbnet_devaddr
517 * Perform fixups to the PHY present on certain boards. We only need this
519 * - SPL with either CPSW or USB ethernet support
520 * - Full U-Boot, with either CPSW or USB ethernet
521 * Build in only these cases to avoid warnings about unused variables
522 * when we build an SPL that has neither option but full U-Boot will.
524 #if ((defined(CONFIG_SPL_ETH_SUPPORT) || \
525 defined(CONFIG_SPL_USBETH_SUPPORT)) && \
526 defined(CONFIG_SPL_BUILD)) || \
527 ((defined(CONFIG_DRIVER_TI_CPSW) || \
528 defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)) && \
529 !defined(CONFIG_SPL_BUILD))
530 int board_eth_init(bd_t *bis)
534 uint32_t mac_hi, mac_lo;
536 /* try reading mac address from efuse */
537 mac_lo = readl(&cdev->macid0l);
538 mac_hi = readl(&cdev->macid0h);
539 mac_addr[0] = mac_hi & 0xFF;
540 mac_addr[1] = (mac_hi & 0xFF00) >> 8;
541 mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
542 mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
543 mac_addr[4] = mac_lo & 0xFF;
544 mac_addr[5] = (mac_lo & 0xFF00) >> 8;
546 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
547 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
548 if (!getenv("ethaddr")) {
549 printf("<ethaddr> not set. Validating first E-fuse MAC\n");
551 if (is_valid_ethaddr(mac_addr))
552 eth_setenv_enetaddr("ethaddr", mac_addr);
555 writel(MII_MODE_ENABLE, &cdev->miisel);
556 cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_MII;
557 cpsw_slaves[1].phy_if = cpsw_slaves[0].phy_if;
558 rv = cpsw_register(&cpsw_data);
560 printf("Error %d registering CPSW switch\n", rv);
565 #if defined(CONFIG_USB_ETHER) && \
566 (!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USBETH_SUPPORT))
567 if (is_valid_ethaddr(mac_addr))
568 eth_setenv_enetaddr("usbnet_devaddr", mac_addr);
570 rv = usb_eth_initialize(bis);
572 printf("Error %d registering USB_ETHER\n", rv);
580 #endif /* CONFIG_DM_ETH */
582 #ifdef CONFIG_SHOW_BOOT_PROGRESS
583 static void bosch_check_reset_pin(void)
585 if (readl(GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0) & RESET_MASK) {
586 printf("Resetting ...\n");
587 writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0);
588 disable_interrupts();
594 static void hang_bosch(const char *cause, int code)
598 gpio_direction_input(RESET_GPIO);
600 /* Enable reset pin interrupt on falling edge */
601 writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0);
602 writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_FALLINGDETECT);
607 for (lv = 0; lv < code; lv++) {
608 bosch_check_reset_pin();
610 __udelay(150 * 1000);
612 __udelay(150 * 1000);
614 #if defined(BLINK_CODE)
615 __udelay(300 * 1000);
620 void show_boot_progress(int val)
623 case BOOTSTAGE_ID_NEED_RESET:
624 hang_bosch("need reset", 4);
630 void arch_preboot_os(void)
635 #if defined(CONFIG_MMC)
636 int board_mmc_init(bd_t *bis)
640 /* Bosch: Do not enable 52MHz for eMMC device to avoid EMI */
641 ret = omap_mmc_init(0, MMC_MODE_HS_52MHz, 26000000, -1, -1);
645 ret = omap_mmc_init(1, MMC_MODE_HS_52MHz, 26000000, -1, -1);