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,
35 #include <asm/arch/mux.h>
36 #include <asm/arch/sys_proto.h>
37 #include <asm/arch/gpio.h>
38 #include <asm/mach-types.h>
43 * Description: Early hardware init.
47 DECLARE_GLOBAL_DATA_PTR;
49 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
50 /* board id for Linux */
51 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
53 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
59 * Routine: get_board_revision
60 * Description: Detect if we are running on a Beagle revision Ax/Bx,
61 * C1/2/3, or C4. This can be done by reading
62 * the level of GPIO173, GPIO172 and GPIO171. This should
64 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
65 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
66 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4
68 int get_board_revision(void)
72 if (!omap_request_gpio(171) &&
73 !omap_request_gpio(172) &&
74 !omap_request_gpio(173)) {
76 omap_set_gpio_direction(171, 1);
77 omap_set_gpio_direction(172, 1);
78 omap_set_gpio_direction(173, 1);
80 revision = omap_get_gpio_datain(173) << 2 |
81 omap_get_gpio_datain(172) << 1 |
82 omap_get_gpio_datain(171);
88 printf("Error: unable to acquire board revision GPIOs\n");
96 * Routine: misc_init_r
97 * Description: Configure board specific parts
101 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
102 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
104 switch (get_board_revision()) {
106 printf("Beagle Rev Ax/Bx\n");
107 setenv("beaglerev", "AxBx");
108 setenv("mpurate", "600");
111 printf("Beagle Rev C1/C2/C3\n");
112 setenv("beaglerev", "Cx");
113 setenv("mpurate", "600");
117 printf("Beagle Rev C4\n");
118 setenv("beaglerev", "Cx");
119 setenv("mpurate", "720");
121 /* Set VAUX2 to 1.8V for EHCI PHY */
122 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
123 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
124 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
125 TWL4030_PM_RECEIVER_DEV_GRP_P1);
128 printf("Beagle unknown 0x%02x\n", get_board_revision());
131 twl4030_power_init();
132 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
134 /* Configure GPIOs to output */
135 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
136 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
137 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
140 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
141 &gpio6_base->setdataout);
142 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
143 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
151 * Routine: set_muxconf_regs
152 * Description: Setting up the configuration Mux registers specific to the
153 * hardware. Many pins need to be moved from protect to primary
156 void set_muxconf_regs(void)