2 * Copyright (C) 2011-2013 Lothar Waßmann <LW@KARO-electronics.de>
3 * based on: board/freescale/mx28_evk.c (C) 2010 Freescale Semiconductor, Inc.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
22 #include <fdt_support.h>
28 #include <linux/list.h>
32 #include <asm/arch/iomux-mx28.h>
33 #include <asm/arch/clock.h>
34 #include <asm/arch/imx-regs.h>
35 #include <asm/arch/sys_proto.h>
37 #include "../common/karo.h"
39 DECLARE_GLOBAL_DATA_PTR;
41 #define MXS_GPIO_NR(p, o) (((p) << 5) | (o))
43 #define TX28_LCD_PWR_GPIO MX28_PAD_LCD_ENABLE__GPIO_1_31
44 #define TX28_LCD_RST_GPIO MX28_PAD_LCD_RESET__GPIO_3_30
45 #define TX28_LCD_BACKLIGHT_GPIO MX28_PAD_PWM0__GPIO_3_16
47 #define TX28_USBH_VBUSEN_GPIO MX28_PAD_SPDIF__GPIO_3_27
48 #define TX28_USBH_OC_GPIO MX28_PAD_JTAG_RTCK__GPIO_4_20
49 #define TX28_USBOTG_VBUSEN_GPIO MX28_PAD_GPMI_CE2N__GPIO_0_18
50 #define TX28_USBOTG_OC_GPIO MX28_PAD_GPMI_CE3N__GPIO_0_19
51 #define TX28_USBOTG_ID_GPIO MX28_PAD_PWM2__GPIO_3_18
53 #define TX28_LED_GPIO MX28_PAD_ENET0_RXD3__GPIO_4_10
55 #define STK5_CAN_XCVR_GPIO MX28_PAD_LCD_D00__GPIO_1_0
57 #define ENET_PAD_CTRL (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP)
58 #define GPIO_PAD_CTRL (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP)
59 #define I2C_PAD_CTRL (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP)
61 #ifndef CONFIG_CONS_INDEX
62 struct serial_device *default_serial_console(void)
68 static const struct gpio tx28_gpios[] = {
69 { TX28_USBH_VBUSEN_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "USBH VBUSEN", },
70 { TX28_USBH_OC_GPIO, GPIOFLAG_INPUT, "USBH OC", },
71 { TX28_USBOTG_VBUSEN_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "USBOTG VBUSEN", },
72 { TX28_USBOTG_OC_GPIO, GPIOFLAG_INPUT, "USBOTG OC", },
73 { TX28_USBOTG_ID_GPIO, GPIOFLAG_INPUT, "USBOTG ID", },
76 static const iomux_cfg_t tx28_pads[] = {
77 /* I2C bus for internal DS1339, PCA9554 and on DIMM pins 40/41 */
78 MX28_PAD_I2C0_SCL__I2C0_SCL | I2C_PAD_CTRL,
79 MX28_PAD_I2C0_SDA__I2C0_SDA | I2C_PAD_CTRL,
82 MX28_PAD_SPDIF__GPIO_3_27,
83 MX28_PAD_JTAG_RTCK__GPIO_4_20,
85 /* USBOTG VBUSEN, OC, ID */
86 MX28_PAD_GPMI_CE2N__GPIO_0_18,
87 MX28_PAD_GPMI_CE3N__GPIO_0_19,
88 MX28_PAD_PWM2__GPIO_3_18,
95 /* provide at least _some_ sort of randomness */
98 static u32 random __attribute__((section("data")));
100 static inline void random_init(void)
102 struct mxs_digctl_regs *digctl_regs = (void *)MXS_DIGCTL_BASE;
106 for (i = 0; i < MAX_LOOPS; i++) {
107 u32 hclk = readl(&digctl_regs->hw_digctl_hclkcount);
108 u32 entropy = readl(&digctl_regs->hw_digctl_entropy);
109 u32 usec = readl(&digctl_regs->hw_digctl_microseconds);
111 seed = get_timer(hclk ^ entropy ^ usec ^ random ^ seed);
117 #define RTC_PERSISTENT0_CLK32_MASK (RTC_PERSISTENT0_CLOCKSOURCE | \
118 RTC_PERSISTENT0_XTAL32KHZ_PWRUP)
119 static u32 boot_cause __attribute__((section("data")));
121 int board_early_init_f(void)
123 struct mxs_rtc_regs *rtc_regs = (void *)MXS_RTC_BASE;
129 /* IO0 clock at 480MHz */
130 mxs_set_ioclk(MXC_IOCLK0, 480000);
131 /* IO1 clock at 480MHz */
132 mxs_set_ioclk(MXC_IOCLK1, 480000);
134 /* SSP0 clock at 96MHz */
135 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
136 /* SSP2 clock at 96MHz */
137 mxs_set_sspclk(MXC_SSPCLK2, 96000, 0);
139 gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
140 mxs_iomux_setup_multiple_pads(tx28_pads, ARRAY_SIZE(tx28_pads));
142 while ((rtc_stat = readl(&rtc_regs->hw_rtc_stat)) &
143 RTC_STAT_STALE_REGS_PERSISTENT0) {
148 boot_cause = readl(&rtc_regs->hw_rtc_persistent0);
149 if ((boot_cause & RTC_PERSISTENT0_CLK32_MASK) !=
150 RTC_PERSISTENT0_CLK32_MASK) {
151 if (boot_cause & RTC_PERSISTENT0_CLOCKSOURCE)
153 writel(RTC_PERSISTENT0_CLK32_MASK,
154 &rtc_regs->hw_rtc_persistent0_set);
159 serial_puts("Inconsistent value in RTC_PERSISTENT0 register; power-on-reset required\n");
166 printf("CTRL-C detected; safeboot enabled\n");
168 /* Address of boot parameters */
169 #ifdef CONFIG_OF_LIBFDT
170 gd->bd->bi_arch_number = -1;
172 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x1000;
178 return mxs_dram_init();
181 #ifdef CONFIG_CMD_MMC
182 static int tx28_mmc_wp(int dev_no)
187 int board_mmc_init(bd_t *bis)
189 return mxsmmc_initialize(bis, 0, tx28_mmc_wp, NULL);
191 #endif /* CONFIG_CMD_MMC */
193 #ifdef CONFIG_FEC_MXC
194 #ifdef CONFIG_GET_FEC_MAC_ADDR_FROM_IIM
196 #ifndef CONFIG_TX28_S
197 #define FEC_MAX_IDX 1
199 #define FEC_MAX_IDX 0
205 static int fec_get_mac_addr(int index)
208 struct mxs_ocotp_regs *ocotp_regs =
209 (struct mxs_ocotp_regs *)MXS_OCOTP_BASE;
210 u32 *cust = &ocotp_regs->hw_ocotp_cust0;
212 char env_name[] = "eth.addr";
216 if (index < 0 || index > FEC_MAX_IDX)
219 /* set this bit to open the OTP banks for reading */
220 writel(OCOTP_CTRL_RD_BANK_OPEN,
221 &ocotp_regs->hw_ocotp_ctrl_set);
223 /* wait until OTP contents are readable */
224 while (OCOTP_CTRL_BUSY & readl(&ocotp_regs->hw_ocotp_ctrl)) {
230 for (i = 0; i < sizeof(mac); i++) {
231 int shift = 24 - i % 4 * 8;
234 val = readl(&cust[index * 8 + i]);
235 mac[i] = val >> shift;
237 if (!is_valid_ethaddr(mac)) {
239 printf("No valid MAC address programmed\n");
244 printf("MAC addr from fuse: %pM\n", mac);
245 snprintf(env_name, sizeof(env_name), "ethaddr");
247 snprintf(env_name, sizeof(env_name), "eth%daddr", index);
249 eth_setenv_enetaddr(env_name, mac);
253 static inline int tx28_fec1_enabled(void)
261 off = fdt_path_offset(gd->fdt_blob, "ethernet1");
265 status = fdt_getprop(gd->fdt_blob, off, "status", NULL);
266 return status && (strcmp(status, "okay") == 0);
269 static void tx28_init_mac(void)
273 ret = fec_get_mac_addr(0);
275 printf("Failed to read FEC0 MAC address from OCOTP\n");
279 if (tx28_fec1_enabled()) {
280 ret = fec_get_mac_addr(1);
282 printf("Failed to read FEC1 MAC address from OCOTP\n");
289 static inline void tx28_init_mac(void)
292 #endif /* CONFIG_GET_FEC_MAC_ADDR_FROM_IIM */
294 static const iomux_cfg_t tx28_fec_pads[] = {
295 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | ENET_PAD_CTRL,
296 MX28_PAD_ENET0_RXD0__ENET0_RXD0 | ENET_PAD_CTRL,
297 MX28_PAD_ENET0_RXD1__ENET0_RXD1 | ENET_PAD_CTRL,
300 int board_eth_init(bd_t *bis)
304 /* Reset the external phy */
305 gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
307 /* Power on the external phy */
308 gpio_direction_output(MX28_PAD_PWM4__GPIO_3_29, 1);
310 /* Pull strap pins to high */
311 gpio_direction_output(MX28_PAD_ENET0_RX_EN__GPIO_4_2, 1);
312 gpio_direction_output(MX28_PAD_ENET0_RXD0__GPIO_4_3, 1);
313 gpio_direction_output(MX28_PAD_ENET0_RXD1__GPIO_4_4, 1);
314 gpio_direction_input(MX28_PAD_ENET0_TX_CLK__GPIO_4_5);
317 gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
320 mxs_iomux_setup_multiple_pads(tx28_fec_pads, ARRAY_SIZE(tx28_fec_pads));
322 ret = cpu_eth_init(bis);
324 printf("cpu_eth_init() failed: %d\n", ret);
328 #ifndef CONFIG_TX28_S
329 if (getenv("ethaddr")) {
330 ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
332 printf("FEC MXS: Unable to init FEC0\n");
337 if (getenv("eth1addr")) {
338 ret = fecmxc_initialize_multi(bis, 1, 1, MXS_ENET1_BASE);
340 printf("FEC MXS: Unable to init FEC1\n");
345 if (getenv("ethaddr")) {
346 ret = fecmxc_initialize(bis);
348 printf("FEC MXS: Unable to init FEC\n");
356 static inline void tx28_init_mac(void)
359 #endif /* CONFIG_FEC_MXC */
368 static int led_state = LED_STATE_DISABLED;
370 void show_activity(int arg)
374 if (led_state == LED_STATE_DISABLED) {
376 } else if (led_state == LED_STATE_INIT) {
378 gpio_set_value(TX28_LED_GPIO, 1);
379 led_state = LED_STATE_ON;
381 if (get_timer(last) > CONFIG_SYS_HZ) {
383 if (led_state == LED_STATE_ON) {
384 gpio_set_value(TX28_LED_GPIO, 0);
385 led_state = LED_STATE_OFF;
387 gpio_set_value(TX28_LED_GPIO, 1);
388 led_state = LED_STATE_ON;
394 static const iomux_cfg_t stk5_pads[] = {
395 /* SW controlled LED on STK5 baseboard */
396 MX28_PAD_ENET0_RXD3__GPIO_4_10 | GPIO_PAD_CTRL,
399 static const struct gpio stk5_gpios[] = {
403 vidinfo_t panel_info = {
404 /* set to max. size supported by SoC */
408 .vl_bpix = LCD_COLOR32, /* Bits per pixel, 0: 1bpp, 1: 2bpp, 2: 4bpp, 3: 8bpp ... */
411 static struct fb_videomode tx28_fb_modes[] = {
413 /* Standard VGA timing */
418 .pixclock = KHZ2PICOS(25175),
425 .vmode = FB_VMODE_NONINTERLACED,
428 /* Emerging ETV570 640 x 480 display. Syncs low active,
429 * DE high active, 115.2 mm x 86.4 mm display area
430 * VGA compatible timing
436 .pixclock = KHZ2PICOS(25175),
443 .vmode = FB_VMODE_NONINTERLACED,
446 /* Emerging ET0350G0DH6 320 x 240 display.
447 * 70.08 mm x 52.56 mm display area.
453 .pixclock = KHZ2PICOS(6500),
454 .left_margin = 68 - 34,
457 .upper_margin = 18 - 3,
460 .vmode = FB_VMODE_NONINTERLACED,
463 /* Emerging ET0430G0DH6 480 x 272 display.
464 * 95.04 mm x 53.856 mm display area.
470 .pixclock = KHZ2PICOS(9000),
477 .sync = FB_SYNC_CLK_LAT_FALL,
478 .vmode = FB_VMODE_NONINTERLACED,
481 /* Emerging ET0500G0DH6 800 x 480 display.
482 * 109.6 mm x 66.4 mm display area.
488 .pixclock = KHZ2PICOS(33260),
489 .left_margin = 216 - 128,
491 .right_margin = 1056 - 800 - 216,
492 .upper_margin = 35 - 2,
494 .lower_margin = 525 - 480 - 35,
495 .vmode = FB_VMODE_NONINTERLACED,
498 /* Emerging ETQ570G0DH6 320 x 240 display.
499 * 115.2 mm x 86.4 mm display area.
505 .pixclock = KHZ2PICOS(6400),
509 .upper_margin = 16, /* 15 according to datasheet */
510 .vsync_len = 3, /* TVP -> 1>x>5 */
511 .lower_margin = 4, /* 4.5 according to datasheet */
512 .vmode = FB_VMODE_NONINTERLACED,
515 /* Emerging ET0700G0DH6 800 x 480 display.
516 * 152.4 mm x 91.44 mm display area.
522 .pixclock = KHZ2PICOS(33260),
523 .left_margin = 216 - 128,
525 .right_margin = 1056 - 800 - 216,
526 .upper_margin = 35 - 2,
528 .lower_margin = 525 - 480 - 35,
529 .vmode = FB_VMODE_NONINTERLACED,
532 /* unnamed entry for assigning parameters parsed from 'video_mode' string */
533 .vmode = FB_VMODE_NONINTERLACED,
537 static int lcd_enabled = 1;
538 static int lcd_bl_polarity;
540 static int lcd_backlight_polarity(void)
542 return lcd_bl_polarity;
545 void lcd_enable(void)
548 * global variable from common/lcd.c
549 * Set to 0 here to prevent messages from going to LCD
550 * rather than serial console
554 karo_load_splashimage(1);
556 debug("Switching LCD on\n");
557 gpio_set_value(TX28_LCD_PWR_GPIO, 1);
559 gpio_set_value(TX28_LCD_RST_GPIO, 1);
561 gpio_set_value(TX28_LCD_BACKLIGHT_GPIO,
562 lcd_backlight_polarity());
566 void lcd_disable(void)
570 void lcd_panel_disable(void)
573 debug("Switching LCD off\n");
574 gpio_set_value(TX28_LCD_BACKLIGHT_GPIO,
575 !lcd_backlight_polarity());
576 gpio_set_value(TX28_LCD_RST_GPIO, 0);
577 gpio_set_value(TX28_LCD_PWR_GPIO, 0);
581 static const iomux_cfg_t stk5_lcd_pads[] = {
583 MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
584 /* LCD POWER_ENABLE */
585 MX28_PAD_LCD_ENABLE__GPIO_1_31 | MXS_PAD_CTRL,
586 /* LCD Backlight (PWM) */
587 MX28_PAD_PWM0__GPIO_3_16 | MXS_PAD_CTRL,
590 MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
591 MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
592 MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
593 MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
594 MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
595 MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
596 MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
597 MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
598 MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
599 MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
600 MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
601 MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
602 MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
603 MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
604 MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
605 MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
606 MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
607 MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
608 MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
609 MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
610 MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
611 MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
612 MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
613 MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
614 MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
615 MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
616 MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
617 MX28_PAD_LCD_CS__LCD_CS | MXS_PAD_CTRL,
620 static const struct gpio stk5_lcd_gpios[] = {
621 { TX28_LCD_RST_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "LCD RESET", },
622 { TX28_LCD_PWR_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "LCD POWER", },
623 { TX28_LCD_BACKLIGHT_GPIO, GPIOFLAG_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
626 void lcd_ctrl_init(void *lcdbase)
628 int color_depth = 24;
629 const char *video_mode = karo_get_vmode(getenv("video_mode"));
633 struct fb_videomode *p = tx28_fb_modes;
634 struct fb_videomode fb_mode;
635 int xres_set = 0, yres_set = 0, bpp_set = 0, refresh_set = 0;
638 debug("LCD disabled\n");
643 debug("Disabling LCD\n");
645 setenv("splashimage", NULL);
650 lcd_bl_polarity = karo_fdt_get_backlight_polarity(working_fdt);
652 if (video_mode == NULL) {
653 debug("Disabling LCD\n");
658 if (karo_fdt_get_fb_mode(working_fdt, video_mode, &fb_mode) == 0) {
660 debug("Using video mode from FDT\n");
662 if (fb_mode.xres > panel_info.vl_col ||
663 fb_mode.yres > panel_info.vl_row) {
664 printf("video resolution from DT: %dx%d exceeds hardware limits: %dx%d\n",
665 fb_mode.xres, fb_mode.yres,
666 panel_info.vl_col, panel_info.vl_row);
672 debug("Trying compiled-in video modes\n");
673 while (p->name != NULL) {
674 if (strcmp(p->name, vm) == 0) {
675 debug("Using video mode: '%s'\n", p->name);
682 debug("Trying to decode video_mode: '%s'\n", vm);
683 while (*vm != '\0') {
684 if (*vm >= '0' && *vm <= '9') {
687 val = simple_strtoul(vm, &end, 0);
690 if (val > panel_info.vl_col)
691 val = panel_info.vl_col;
693 panel_info.vl_col = val;
695 } else if (!yres_set) {
696 if (val > panel_info.vl_row)
697 val = panel_info.vl_row;
699 panel_info.vl_row = val;
701 } else if (!bpp_set) {
711 printf("Invalid color depth: '%.*s' in video_mode; using default: '%u'\n",
712 end - vm, vm, color_depth);
715 } else if (!refresh_set) {
742 if (p->xres == 0 || p->yres == 0) {
743 printf("Invalid video mode: %s\n", getenv("video_mode"));
745 printf("Supported video modes are:");
746 for (p = &tx28_fb_modes[0]; p->name != NULL; p++) {
747 printf(" %s", p->name);
752 if (p->xres > panel_info.vl_col || p->yres > panel_info.vl_row) {
753 printf("video resolution: %dx%d exceeds hardware limits: %dx%d\n",
754 p->xres, p->yres, panel_info.vl_col, panel_info.vl_row);
758 panel_info.vl_col = p->xres;
759 panel_info.vl_row = p->yres;
761 switch (color_depth) {
763 panel_info.vl_bpix = LCD_COLOR8;
766 panel_info.vl_bpix = LCD_COLOR16;
769 panel_info.vl_bpix = LCD_COLOR32;
772 p->pixclock = KHZ2PICOS(refresh *
773 (p->xres + p->left_margin + p->right_margin + p->hsync_len) *
774 (p->yres + p->upper_margin + p->lower_margin + p->vsync_len) /
776 debug("Pixel clock set to %lu.%03lu MHz\n",
777 PICOS2KHZ(p->pixclock) / 1000, PICOS2KHZ(p->pixclock) % 1000);
782 debug("Creating new display-timing node from '%s'\n",
784 ret = karo_fdt_create_fb_mode(working_fdt, video_mode, p);
786 printf("Failed to create new display-timing node from '%s': %d\n",
790 gpio_request_array(stk5_lcd_gpios, ARRAY_SIZE(stk5_lcd_gpios));
791 mxs_iomux_setup_multiple_pads(stk5_lcd_pads,
792 ARRAY_SIZE(stk5_lcd_pads));
794 debug("video format: %ux%u-%u@%u\n", p->xres, p->yres,
795 color_depth, refresh);
797 if (karo_load_splashimage(0) == 0) {
800 /* setup env variable for mxsfb display driver */
801 snprintf(vmode, sizeof(vmode),
802 "x:%d,y:%d,le:%d,ri:%d,up:%d,lo:%d,hs:%d,vs:%d,sync:%d,pclk:%d,depth:%d",
803 p->xres, p->yres, p->left_margin, p->right_margin,
804 p->upper_margin, p->lower_margin, p->hsync_len,
805 p->vsync_len, p->sync, p->pixclock, color_depth);
806 setenv("videomode", vmode);
808 debug("Initializing LCD controller\n");
810 setenv("videomode", NULL);
812 debug("Skipping initialization of LCD controller\n");
816 #define lcd_enabled 0
817 #endif /* CONFIG_LCD */
819 static void stk5_board_init(void)
821 gpio_request_array(stk5_gpios, ARRAY_SIZE(stk5_gpios));
822 mxs_iomux_setup_multiple_pads(stk5_pads, ARRAY_SIZE(stk5_pads));
825 static void stk5v3_board_init(void)
827 led_state = LED_STATE_INIT;
831 static void stk5v5_board_init(void)
835 /* init flexcan transceiver enable GPIO */
836 gpio_request_one(STK5_CAN_XCVR_GPIO, GPIOFLAG_OUTPUT_INIT_HIGH,
837 "Flexcan Transceiver");
838 mxs_iomux_setup_pad(STK5_CAN_XCVR_GPIO);
841 int board_late_init(void)
844 const char *baseboard;
849 setenv_ulong("safeboot", 1);
853 baseboard = getenv("baseboard");
857 printf("Baseboard: %s\n", baseboard);
859 if (strncmp(baseboard, "stk5", 4) == 0) {
860 if ((strlen(baseboard) == 4) ||
861 strcmp(baseboard, "stk5-v3") == 0) {
863 } else if (strcmp(baseboard, "stk5-v5") == 0) {
864 const char *otg_mode = getenv("otg_mode");
866 if (otg_mode && strcmp(otg_mode, "host") == 0) {
867 printf("otg_mode='%s' is incompatible with baseboard %s; setting to 'none'\n",
868 otg_mode, baseboard);
869 setenv("otg_mode", "none");
873 printf("WARNING: Unsupported STK5 board rev.: %s\n",
877 printf("WARNING: Unsupported baseboard: '%s'\n",
889 #define BOOT_CAUSE_MASK (RTC_PERSISTENT0_EXTERNAL_RESET | \
890 RTC_PERSISTENT0_ALARM_WAKE | \
891 RTC_PERSISTENT0_THERMAL_RESET)
893 static void thermal_init(void)
895 struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
896 struct mxs_clkctrl_regs *clkctrl_regs = (void *)MXS_CLKCTRL_BASE;
898 writel(POWER_THERMAL_LOW_POWER | POWER_THERMAL_OFFSET_ADJ_ENABLE |
899 POWER_THERMAL_OFFSET_ADJ_OFFSET(3),
900 &power_regs->hw_power_thermal);
902 writel(CLKCTRL_RESET_EXTERNAL_RESET_ENABLE |
903 CLKCTRL_RESET_THERMAL_RESET_ENABLE,
904 &clkctrl_regs->hw_clkctrl_reset);
909 struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
910 u32 pwr_sts = readl(&power_regs->hw_power_sts);
911 u32 pwrup_src = (pwr_sts >> 24) & 0x3f;
912 const char *dlm = "";
914 printf("Board: Ka-Ro TX28-4%sx%d\n", TX28_MOD_SUFFIX,
915 CONFIG_SYS_SDRAM_SIZE / SZ_128M +
916 CONFIG_SYS_NAND_BLOCKS / 2048 * 2);
918 printf("POWERUP Source: ");
919 if (pwrup_src & (3 << 0)) {
920 printf("%sPSWITCH %s voltage", dlm,
921 pwrup_src & (1 << 1) ? "HIGH" : "MID");
924 if (pwrup_src & (1 << 4)) {
925 printf("%sRTC", dlm);
928 if (pwrup_src & (1 << 5)) {
934 if (boot_cause & BOOT_CAUSE_MASK) {
936 printf("Last boot cause: ");
937 if (boot_cause & RTC_PERSISTENT0_EXTERNAL_RESET) {
938 printf("%sEXTERNAL", dlm);
941 if (boot_cause & RTC_PERSISTENT0_THERMAL_RESET) {
942 printf("%sTHERMAL", dlm);
947 if (boot_cause & RTC_PERSISTENT0_ALARM_WAKE) {
948 printf("%sALARM WAKE", dlm);
954 while (pwr_sts & POWER_STS_THERMAL_WARNING) {
955 static int first = 1;
958 printf("CPU too hot to boot\n");
963 pwr_sts = readl(&power_regs->hw_power_sts);
966 if (!(boot_cause & RTC_PERSISTENT0_THERMAL_RESET))
972 #if defined(CONFIG_OF_BOARD_SETUP)
973 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
974 #include <jffs2/jffs2.h>
975 #include <mtd_node.h>
976 static struct node_info tx28_nand_nodes[] = {
977 { "fsl,imx28-gpmi-nand", MTD_DEV_TYPE_NAND, },
980 #define fdt_fixup_mtdparts(b,n,c) do { } while (0)
983 static const char *tx28_touchpanels[] = {
989 int ft_board_setup(void *blob, bd_t *bd)
991 const char *baseboard = getenv("baseboard");
992 int stk5_v5 = baseboard != NULL && (strcmp(baseboard, "stk5-v5") == 0);
993 const char *video_mode = karo_get_vmode(getenv("video_mode"));
996 ret = fdt_increase_size(blob, 4096);
998 printf("Failed to increase FDT size: %s\n", fdt_strerror(ret));
1001 #ifdef CONFIG_TX28_S
1002 /* TX28-41xx (aka TX28S) has no external RTC
1003 * and no I2C GPIO extender
1005 karo_fdt_remove_node(blob, "ds1339");
1006 karo_fdt_remove_node(blob, "gpio5");
1009 karo_fdt_enable_node(blob, "stk5led", 0);
1011 fdt_fixup_mtdparts(blob, tx28_nand_nodes, ARRAY_SIZE(tx28_nand_nodes));
1013 karo_fdt_fixup_touchpanel(blob, tx28_touchpanels,
1014 ARRAY_SIZE(tx28_touchpanels));
1015 karo_fdt_fixup_usb_otg(blob, "usbotg", "fsl,usbphy", "vbus-supply");
1016 karo_fdt_fixup_flexcan(blob, stk5_v5);
1017 karo_fdt_update_fb_mode(blob, video_mode);
1021 #endif /* CONFIG_OF_BOARD_SETUP */