2 * (C) Copyright 2004-2008
3 * Texas Instruments, <www.ti.com>
6 * Sunil Kumar <sunilsaini05@gmail.com>
7 * Shashi Ranjan <shashiranjanmca05@gmail.com>
9 * Derived from Beagle Board and 3430 SDP code by
10 * Richard Woodruff <r-woodruff2@ti.com>
11 * Syed Mohammed Khasim <khasim@ti.com>
14 * See file CREDITS for list of people who contributed to this
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #ifdef CONFIG_STATUS_LED
34 #include <status_led.h>
38 #include <asm/arch/mmc_host_def.h>
39 #include <asm/arch/mux.h>
40 #include <asm/arch/sys_proto.h>
42 #include <asm/mach-types.h>
43 #ifdef CONFIG_USB_EHCI
45 #include <asm/arch/clocks.h>
46 #include <asm/arch/clocks_omap3.h>
47 #include <asm/arch/ehci_omap3.h>
48 /* from drivers/usb/host/ehci-core.h */
49 extern struct ehci_hccr *hccr;
50 extern volatile struct ehci_hcor *hcor;
55 #define pr_debug(fmt, args...) debug(fmt, ##args)
57 #define TWL4030_I2C_BUS 0
58 #define EXPANSION_EEPROM_I2C_BUS 1
59 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50
61 #define TINCANTOOLS_ZIPPY 0x01000100
62 #define TINCANTOOLS_ZIPPY2 0x02000100
63 #define TINCANTOOLS_TRAINER 0x04000100
64 #define TINCANTOOLS_SHOWDOG 0x03000100
65 #define KBADC_BEAGLEFPGA 0x01000600
66 #define LW_BEAGLETOUCH 0x01000700
67 #define BRAINMUX_LCDOG 0x01000800
68 #define BRAINMUX_LCDOGTOUCH 0x02000800
69 #define BBTOYS_WIFI 0x01000B00
70 #define BBTOYS_VGA 0x02000B00
71 #define BBTOYS_LCD 0x03000B00
72 #define BEAGLE_NO_EEPROM 0xffffffff
74 DECLARE_GLOBAL_DATA_PTR;
77 unsigned int device_vendor;
78 unsigned char revision;
79 unsigned char content;
87 * Description: Early hardware init.
91 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
92 /* board id for Linux */
93 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
95 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
97 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
98 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
105 * Routine: get_board_revision
106 * Description: Detect if we are running on a Beagle revision Ax/Bx,
107 * C1/2/3, C4 or xM. This can be done by reading
108 * the level of GPIO173, GPIO172 and GPIO171. This should
110 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
111 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
112 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4
113 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM
115 int get_board_revision(void)
119 if (!gpio_request(171, "") &&
120 !gpio_request(172, "") &&
121 !gpio_request(173, "")) {
123 gpio_direction_input(171);
124 gpio_direction_input(172);
125 gpio_direction_input(173);
127 revision = gpio_get_value(173) << 2 |
128 gpio_get_value(172) << 1 |
131 printf("Error: unable to acquire board revision GPIOs\n");
139 * Routine: get_expansion_id
140 * Description: This function checks for expansion board by checking I2C
141 * bus 1 for the availability of an AT24C01B serial EEPROM.
142 * returns the device_vendor field from the EEPROM
144 unsigned int get_expansion_id(void)
146 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
148 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
149 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
150 i2c_set_bus_num(TWL4030_I2C_BUS);
151 return BEAGLE_NO_EEPROM;
154 /* read configuration data */
155 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
156 sizeof(expansion_config));
158 i2c_set_bus_num(TWL4030_I2C_BUS);
160 return expansion_config.device_vendor;
164 * Configure DSS to display background color on DVID
165 * Configure VENC to display color bar on S-Video
167 void beagle_display_init(void)
169 omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
170 switch (get_board_revision()) {
174 omap3_dss_panel_config(&dvid_cfg);
180 omap3_dss_panel_config(&dvid_cfg_xm);
186 * Routine: misc_init_r
187 * Description: Configure board specific parts
189 int misc_init_r(void)
191 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
192 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
193 struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
195 /* Enable i2c2 pullup resisters */
196 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
198 switch (get_board_revision()) {
200 printf("Beagle Rev Ax/Bx\n");
201 setenv("beaglerev", "AxBx");
204 printf("Beagle Rev C1/C2/C3\n");
205 setenv("beaglerev", "Cx");
209 printf("Beagle Rev C4\n");
210 setenv("beaglerev", "C4");
212 /* Set VAUX2 to 1.8V for EHCI PHY */
213 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
214 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
215 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
216 TWL4030_PM_RECEIVER_DEV_GRP_P1);
219 printf("Beagle xM Rev A\n");
220 setenv("beaglerev", "xMA");
222 /* Set VAUX2 to 1.8V for EHCI PHY */
223 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
224 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
225 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
226 TWL4030_PM_RECEIVER_DEV_GRP_P1);
229 printf("Beagle xM Rev B\n");
230 setenv("beaglerev", "xMB");
232 /* Set VAUX2 to 1.8V for EHCI PHY */
233 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
234 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
235 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
236 TWL4030_PM_RECEIVER_DEV_GRP_P1);
239 printf("Beagle xM Rev C\n");
240 setenv("beaglerev", "xMC");
242 /* Set VAUX2 to 1.8V for EHCI PHY */
243 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
244 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
245 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
246 TWL4030_PM_RECEIVER_DEV_GRP_P1);
249 printf("Beagle unknown 0x%02x\n", get_board_revision());
251 /* Set VAUX2 to 1.8V for EHCI PHY */
252 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
253 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
254 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
255 TWL4030_PM_RECEIVER_DEV_GRP_P1);
258 switch (get_expansion_id()) {
259 case TINCANTOOLS_ZIPPY:
260 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
261 expansion_config.revision,
262 expansion_config.fab_revision);
263 MUX_TINCANTOOLS_ZIPPY();
264 setenv("buddy", "zippy");
266 case TINCANTOOLS_ZIPPY2:
267 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
268 expansion_config.revision,
269 expansion_config.fab_revision);
270 MUX_TINCANTOOLS_ZIPPY();
271 setenv("buddy", "zippy2");
273 case TINCANTOOLS_TRAINER:
274 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
275 expansion_config.revision,
276 expansion_config.fab_revision);
277 MUX_TINCANTOOLS_ZIPPY();
278 MUX_TINCANTOOLS_TRAINER();
279 setenv("buddy", "trainer");
281 case TINCANTOOLS_SHOWDOG:
282 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
283 expansion_config.revision,
284 expansion_config.fab_revision);
285 /* Place holder for DSS2 definition for showdog lcd */
286 setenv("defaultdisplay", "showdoglcd");
287 setenv("buddy", "showdog");
289 case KBADC_BEAGLEFPGA:
290 printf("Recognized KBADC Beagle FPGA board\n");
291 MUX_KBADC_BEAGLEFPGA();
292 setenv("buddy", "beaglefpga");
295 printf("Recognized Liquidware BeagleTouch board\n");
296 setenv("buddy", "beagletouch");
299 printf("Recognized Brainmux LCDog board\n");
300 setenv("buddy", "lcdog");
302 case BRAINMUX_LCDOGTOUCH:
303 printf("Recognized Brainmux LCDog Touch board\n");
304 setenv("buddy", "lcdogtouch");
307 printf("Recognized BeagleBoardToys WiFi board\n");
309 setenv("buddy", "bbtoys-wifi");
312 printf("Recognized BeagleBoardToys VGA board\n");
315 printf("Recognized BeagleBoardToys LCD board\n");
317 case BEAGLE_NO_EEPROM:
318 printf("No EEPROM on expansion board\n");
319 setenv("buddy", "none");
322 printf("Unrecognized expansion board: %x\n",
323 expansion_config.device_vendor);
324 setenv("buddy", "unknown");
327 if (expansion_config.content == 1)
328 setenv(expansion_config.env_var, expansion_config.env_setting);
330 twl4030_power_init();
331 switch (get_board_revision()) {
334 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
337 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
341 /* Set GPIO states before they are made outputs */
342 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
343 &gpio6_base->setdataout);
344 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
345 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
347 /* Configure GPIOs to output */
348 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
349 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
350 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
353 beagle_display_init();
360 * Routine: set_muxconf_regs
361 * Description: Setting up the configuration Mux registers specific to the
362 * hardware. Many pins need to be moved from protect to primary
365 void set_muxconf_regs(void)
370 #ifdef CONFIG_GENERIC_MMC
371 int board_mmc_init(bd_t *bis)
378 #ifdef CONFIG_USB_EHCI
380 #define GPIO_PHY_RESET 147
382 /* Reset is needed otherwise the kernel-driver will throw an error. */
383 int ehci_hcd_stop(void)
385 pr_debug("Resetting OMAP3 EHCI\n");
386 gpio_set_value(GPIO_PHY_RESET, 0);
387 writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
388 /* disable USB clocks */
389 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
390 sr32(&prcm_base->iclken_usbhost, 0, 1, 0);
391 sr32(&prcm_base->fclken_usbhost, 0, 2, 0);
392 sr32(&prcm_base->iclken3_core, 2, 1, 0);
393 sr32(&prcm_base->fclken3_core, 2, 1, 0);
397 /* Call usb_stop() before starting the kernel */
398 void show_boot_progress(int val)
405 * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard.
406 * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37.
407 * See there for additional Copyrights.
409 int ehci_hcd_init(void)
411 pr_debug("Initializing OMAP3 ECHI\n");
413 /* Put the PHY in RESET */
414 gpio_request(GPIO_PHY_RESET, "");
415 gpio_direction_output(GPIO_PHY_RESET, 0);
416 gpio_set_value(GPIO_PHY_RESET, 0);
418 /* Hold the PHY in RESET for enough time till DIR is high */
422 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
423 /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
424 sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
426 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
427 * and USBHOST_120M_FCLK (USBHOST_FCLK2)
429 sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
430 /* Enable USBTTL_ICLK */
431 sr32(&prcm_base->iclken3_core, 2, 1, 1);
432 /* Enable USBTTL_FCLK */
433 sr32(&prcm_base->fclken3_core, 2, 1, 1);
434 pr_debug("USB clocks enabled\n");
436 /* perform TLL soft reset, and wait until reset is complete */
437 writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET,
438 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
439 /* Wait for TLL reset to complete */
440 while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS)
441 & OMAP_USBTLL_SYSSTATUS_RESETDONE));
442 pr_debug("TLL reset done\n");
444 writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
445 OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
446 OMAP_USBTLL_SYSCONFIG_CACTIVITY,
447 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
449 /* Put UHH in NoIdle/NoStandby mode */
450 writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP
451 | OMAP_UHH_SYSCONFIG_SIDLEMODE
452 | OMAP_UHH_SYSCONFIG_CACTIVITY
453 | OMAP_UHH_SYSCONFIG_MIDLEMODE,
454 OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
456 /* setup burst configurations */
457 writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
458 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
459 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN,
460 OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG);
464 * Hold the PHY in RESET for enough time till
465 * PHY is settled and ready
468 gpio_set_value(GPIO_PHY_RESET, 1);
470 hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE);
471 hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10);
473 pr_debug("OMAP3 EHCI init done\n");
477 #endif /* CONFIG_USB_EHCI */
480 * This command returns the status of the user button on beagle xM
482 * Returns - 1 if button is held down
483 * 0 if button is not held down
485 int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
491 * pass address parameter as argv[0] (aka command name),
492 * and all remaining args
494 switch (get_board_revision()) {
507 gpio_request(gpio, "");
508 gpio_direction_input(gpio);
509 printf("The user button is currently ");
510 if (gpio_get_value(gpio))
513 printf("PRESSED.\n");
518 printf("NOT pressed.\n");
524 /* -------------------------------------------------------------------- */
527 userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
528 "Return the status of the BeagleBoard USER button",