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>
41 #include <asm/arch/gpio.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;
54 #define pr_debug(fmt, args...) debug(fmt, ##args)
56 #define TWL4030_I2C_BUS 0
57 #define EXPANSION_EEPROM_I2C_BUS 1
58 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50
60 #define TINCANTOOLS_ZIPPY 0x01000100
61 #define TINCANTOOLS_ZIPPY2 0x02000100
62 #define TINCANTOOLS_TRAINER 0x04000100
63 #define TINCANTOOLS_SHOWDOG 0x03000100
64 #define KBADC_BEAGLEFPGA 0x01000600
65 #define LW_BEAGLETOUCH 0x01000700
66 #define BRAINMUX_LCDOG 0x01000800
67 #define BRAINMUX_LCDOGTOUCH 0x02000800
68 #define BBTOYS_WIFI 0x01000B00
69 #define BBTOYS_VGA 0x02000B00
70 #define BBTOYS_LCD 0x03000B00
71 #define BEAGLE_NO_EEPROM 0xffffffff
73 DECLARE_GLOBAL_DATA_PTR;
76 unsigned int device_vendor;
77 unsigned char revision;
78 unsigned char content;
86 * Description: Early hardware init.
90 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
91 /* board id for Linux */
92 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
94 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
96 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
97 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
104 * Routine: get_board_revision
105 * Description: Detect if we are running on a Beagle revision Ax/Bx,
106 * C1/2/3, C4 or xM. This can be done by reading
107 * the level of GPIO173, GPIO172 and GPIO171. This should
109 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
110 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
111 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4
112 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM
114 int get_board_revision(void)
118 if (!omap_request_gpio(171) &&
119 !omap_request_gpio(172) &&
120 !omap_request_gpio(173)) {
122 omap_set_gpio_direction(171, 1);
123 omap_set_gpio_direction(172, 1);
124 omap_set_gpio_direction(173, 1);
126 revision = omap_get_gpio_datain(173) << 2 |
127 omap_get_gpio_datain(172) << 1 |
128 omap_get_gpio_datain(171);
134 printf("Error: unable to acquire board revision GPIOs\n");
142 * Routine: get_expansion_id
143 * Description: This function checks for expansion board by checking I2C
144 * bus 1 for the availability of an AT24C01B serial EEPROM.
145 * returns the device_vendor field from the EEPROM
147 unsigned int get_expansion_id(void)
149 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
151 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
152 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
153 i2c_set_bus_num(TWL4030_I2C_BUS);
154 return BEAGLE_NO_EEPROM;
157 /* read configuration data */
158 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
159 sizeof(expansion_config));
161 i2c_set_bus_num(TWL4030_I2C_BUS);
163 return expansion_config.device_vendor;
167 * Routine: misc_init_r
168 * Description: Configure board specific parts
170 int misc_init_r(void)
172 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
173 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
174 struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
176 /* Enable i2c2 pullup resisters */
177 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
179 switch (get_board_revision()) {
181 printf("Beagle Rev Ax/Bx\n");
182 setenv("beaglerev", "AxBx");
185 printf("Beagle Rev C1/C2/C3\n");
186 setenv("beaglerev", "Cx");
190 printf("Beagle Rev C4\n");
191 setenv("beaglerev", "C4");
193 /* Set VAUX2 to 1.8V for EHCI PHY */
194 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
195 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
196 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
197 TWL4030_PM_RECEIVER_DEV_GRP_P1);
200 printf("Beagle xM Rev A\n");
201 setenv("beaglerev", "xMA");
203 /* Set VAUX2 to 1.8V for EHCI PHY */
204 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
205 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
206 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
207 TWL4030_PM_RECEIVER_DEV_GRP_P1);
210 printf("Beagle xM Rev B\n");
211 setenv("beaglerev", "xMB");
213 /* Set VAUX2 to 1.8V for EHCI PHY */
214 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
215 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
216 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
217 TWL4030_PM_RECEIVER_DEV_GRP_P1);
220 printf("Beagle xM Rev C\n");
221 setenv("beaglerev", "xMC");
223 /* Set VAUX2 to 1.8V for EHCI PHY */
224 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
225 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
226 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
227 TWL4030_PM_RECEIVER_DEV_GRP_P1);
230 printf("Beagle unknown 0x%02x\n", get_board_revision());
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 switch (get_expansion_id()) {
240 case TINCANTOOLS_ZIPPY:
241 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
242 expansion_config.revision,
243 expansion_config.fab_revision);
244 MUX_TINCANTOOLS_ZIPPY();
245 setenv("buddy", "zippy");
247 case TINCANTOOLS_ZIPPY2:
248 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
249 expansion_config.revision,
250 expansion_config.fab_revision);
251 MUX_TINCANTOOLS_ZIPPY();
252 setenv("buddy", "zippy2");
254 case TINCANTOOLS_TRAINER:
255 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
256 expansion_config.revision,
257 expansion_config.fab_revision);
258 MUX_TINCANTOOLS_ZIPPY();
259 MUX_TINCANTOOLS_TRAINER();
260 setenv("buddy", "trainer");
262 case TINCANTOOLS_SHOWDOG:
263 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
264 expansion_config.revision,
265 expansion_config.fab_revision);
266 /* Place holder for DSS2 definition for showdog lcd */
267 setenv("defaultdisplay", "showdoglcd");
268 setenv("buddy", "showdog");
270 case KBADC_BEAGLEFPGA:
271 printf("Recognized KBADC Beagle FPGA board\n");
272 MUX_KBADC_BEAGLEFPGA();
273 setenv("buddy", "beaglefpga");
276 printf("Recognized Liquidware BeagleTouch board\n");
277 setenv("buddy", "beagletouch");
280 printf("Recognized Brainmux LCDog board\n");
281 setenv("buddy", "lcdog");
283 case BRAINMUX_LCDOGTOUCH:
284 printf("Recognized Brainmux LCDog Touch board\n");
285 setenv("buddy", "lcdogtouch");
288 printf("Recognized BeagleBoardToys WiFi board\n");
290 setenv("buddy", "bbtoys-wifi");
293 printf("Recognized BeagleBoardToys VGA board\n");
296 printf("Recognized BeagleBoardToys LCD board\n");
298 case BEAGLE_NO_EEPROM:
299 printf("No EEPROM on expansion board\n");
300 setenv("buddy", "none");
303 printf("Unrecognized expansion board: %x\n",
304 expansion_config.device_vendor);
305 setenv("buddy", "unknown");
308 if (expansion_config.content == 1)
309 setenv(expansion_config.env_var, expansion_config.env_setting);
311 twl4030_power_init();
312 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
314 /* Set GPIO states before they are made outputs */
315 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
316 &gpio6_base->setdataout);
317 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
318 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
320 /* Configure GPIOs to output */
321 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
322 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
323 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
331 * Routine: set_muxconf_regs
332 * Description: Setting up the configuration Mux registers specific to the
333 * hardware. Many pins need to be moved from protect to primary
336 void set_muxconf_regs(void)
341 #ifdef CONFIG_GENERIC_MMC
342 int board_mmc_init(bd_t *bis)
349 #ifdef CONFIG_USB_EHCI
351 #define GPIO_PHY_RESET 147
353 /* Reset is needed otherwise the kernel-driver will throw an error. */
354 int ehci_hcd_stop(void)
356 pr_debug("Resetting OMAP3 EHCI\n");
357 omap_set_gpio_dataout(GPIO_PHY_RESET, 0);
358 writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
359 /* disable USB clocks */
360 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
361 sr32(&prcm_base->iclken_usbhost, 0, 1, 0);
362 sr32(&prcm_base->fclken_usbhost, 0, 2, 0);
363 sr32(&prcm_base->iclken3_core, 2, 1, 0);
364 sr32(&prcm_base->fclken3_core, 2, 1, 0);
368 /* Call usb_stop() before starting the kernel */
369 void show_boot_progress(int val)
376 * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard.
377 * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37.
378 * See there for additional Copyrights.
380 int ehci_hcd_init(void)
382 pr_debug("Initializing OMAP3 ECHI\n");
384 /* Put the PHY in RESET */
385 omap_request_gpio(GPIO_PHY_RESET);
386 omap_set_gpio_direction(GPIO_PHY_RESET, 0);
387 omap_set_gpio_dataout(GPIO_PHY_RESET, 0);
389 /* Hold the PHY in RESET for enough time till DIR is high */
393 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
394 /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
395 sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
397 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
398 * and USBHOST_120M_FCLK (USBHOST_FCLK2)
400 sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
401 /* Enable USBTTL_ICLK */
402 sr32(&prcm_base->iclken3_core, 2, 1, 1);
403 /* Enable USBTTL_FCLK */
404 sr32(&prcm_base->fclken3_core, 2, 1, 1);
405 pr_debug("USB clocks enabled\n");
407 /* perform TLL soft reset, and wait until reset is complete */
408 writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET,
409 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
410 /* Wait for TLL reset to complete */
411 while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS)
412 & OMAP_USBTLL_SYSSTATUS_RESETDONE));
413 pr_debug("TLL reset done\n");
415 writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
416 OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
417 OMAP_USBTLL_SYSCONFIG_CACTIVITY,
418 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
420 /* Put UHH in NoIdle/NoStandby mode */
421 writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP
422 | OMAP_UHH_SYSCONFIG_SIDLEMODE
423 | OMAP_UHH_SYSCONFIG_CACTIVITY
424 | OMAP_UHH_SYSCONFIG_MIDLEMODE,
425 OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
427 /* setup burst configurations */
428 writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
429 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
430 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN,
431 OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG);
435 * Hold the PHY in RESET for enough time till
436 * PHY is settled and ready
439 omap_set_gpio_dataout(GPIO_PHY_RESET, 1);
441 hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE);
442 hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10);
444 pr_debug("OMAP3 EHCI init done\n");
448 #endif /* CONFIG_USB_EHCI */