board/ti/panda/panda.c

   1 /*
   2  * (C) Copyright 2010
   3  * Texas Instruments Incorporated, <www.ti.com>
   4  * Steve Sakoman  <steve@sakoman.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  */
  24 #include <common.h>
  25 #include <asm/arch/sys_proto.h>
  26 #include <asm/arch/mmc_host_def.h>
  27 #include <asm/arch/clocks.h>
  28 #include <asm/arch/gpio.h>
  29
  30 #include "panda_mux_data.h"
  31
  32 #define PANDA_ULPI_PHY_TYPE_GPIO       182
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 const struct omap_sysinfo sysinfo = {
  37         "Board: OMAP4 Panda\n"
  38 };
  39
  40 struct omap4_scrm_regs *const scrm = (struct omap4_scrm_regs *)0x4a30a000;
  41
  42 /**
  43  * @brief board_init
  44  *
  45  * @return 0
  46  */
  47 int board_init(void)
  48 {
  49         gpmc_init();
  50
  51         gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
  52         gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
  53
  54         return 0;
  55 }
  56
  57 int board_eth_init(bd_t *bis)
  58 {
  59         return 0;
  60 }
  61
  62 /**
  63  * @brief misc_init_r - Configure Panda board specific configurations
  64  * such as power configurations, ethernet initialization as phase2 of
  65  * boot sequence
  66  *
  67  * @return 0
  68  */
  69 int misc_init_r(void)
  70 {
  71         int phy_type;
  72         u32 auxclk, altclksrc;
  73
  74         /* EHCI is not supported on ES1.0 */
  75         if (omap_revision() == OMAP4430_ES1_0)
  76                 return 0;
  77
  78         gpio_direction_input(PANDA_ULPI_PHY_TYPE_GPIO);
  79         phy_type = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
  80
  81         if (phy_type == 1) {
  82                 /* ULPI PHY supplied by auxclk3 derived from sys_clk */
  83                 debug("ULPI PHY supplied by auxclk3\n");
  84
  85                 auxclk = readl(&scrm->auxclk3);
  86                 /* Select sys_clk */
  87                 auxclk &= ~AUXCLK_SRCSELECT_MASK;
  88                 auxclk |=  AUXCLK_SRCSELECT_SYS_CLK << AUXCLK_SRCSELECT_SHIFT;
  89                 /* Set the divisor to 2 */
  90                 auxclk &= ~AUXCLK_CLKDIV_MASK;
  91                 auxclk |= AUXCLK_CLKDIV_2 << AUXCLK_CLKDIV_SHIFT;
  92                 /* Request auxilary clock #3 */
  93                 auxclk |= AUXCLK_ENABLE_MASK;
  94
  95                 writel(auxclk, &scrm->auxclk3);
  96        } else {
  97                 /* ULPI PHY supplied by auxclk1 derived from PER dpll */
  98                 debug("ULPI PHY supplied by auxclk1\n");
  99
 100                 auxclk = readl(&scrm->auxclk1);
 101                 /* Select per DPLL */
 102                 auxclk &= ~AUXCLK_SRCSELECT_MASK;
 103                 auxclk |=  AUXCLK_SRCSELECT_PER_DPLL << AUXCLK_SRCSELECT_SHIFT;
 104                 /* Set the divisor to 16 */
 105                 auxclk &= ~AUXCLK_CLKDIV_MASK;
 106                 auxclk |= AUXCLK_CLKDIV_16 << AUXCLK_CLKDIV_SHIFT;
 107                 /* Request auxilary clock #3 */
 108                 auxclk |= AUXCLK_ENABLE_MASK;
 109
 110                 writel(auxclk, &scrm->auxclk1);
 111         }
 112
 113         altclksrc = readl(&scrm->altclksrc);
 114
 115         /* Activate alternate system clock supplier */
 116         altclksrc &= ~ALTCLKSRC_MODE_MASK;
 117         altclksrc |= ALTCLKSRC_MODE_ACTIVE;
 118
 119         /* enable clocks */
 120         altclksrc |= ALTCLKSRC_ENABLE_INT_MASK | ALTCLKSRC_ENABLE_EXT_MASK;
 121
 122         writel(altclksrc, &scrm->altclksrc);
 123
 124         return 0;
 125 }
 126
 127 void set_muxconf_regs_essential(void)
 128 {
 129         do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_essential,
 130                    sizeof(core_padconf_array_essential) /
 131                    sizeof(struct pad_conf_entry));
 132
 133         do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_essential,
 134                    sizeof(wkup_padconf_array_essential) /
 135                    sizeof(struct pad_conf_entry));
 136
 137         if (omap_revision() >= OMAP4460_ES1_0)
 138                 do_set_mux(CONTROL_PADCONF_WKUP,
 139                                  wkup_padconf_array_essential_4460,
 140                                  sizeof(wkup_padconf_array_essential_4460) /
 141                                  sizeof(struct pad_conf_entry));
 142 }
 143
 144 void set_muxconf_regs_non_essential(void)
 145 {
 146         do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_non_essential,
 147                    sizeof(core_padconf_array_non_essential) /
 148                    sizeof(struct pad_conf_entry));
 149
 150         if (omap_revision() < OMAP4460_ES1_0)
 151                 do_set_mux(CONTROL_PADCONF_CORE,
 152                                 core_padconf_array_non_essential_4430,
 153                                 sizeof(core_padconf_array_non_essential_4430) /
 154                                 sizeof(struct pad_conf_entry));
 155         else
 156                 do_set_mux(CONTROL_PADCONF_CORE,
 157                                 core_padconf_array_non_essential_4460,
 158                                 sizeof(core_padconf_array_non_essential_4460) /
 159                                 sizeof(struct pad_conf_entry));
 160
 161         do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_non_essential,
 162                    sizeof(wkup_padconf_array_non_essential) /
 163                    sizeof(struct pad_conf_entry));
 164
 165         if (omap_revision() < OMAP4460_ES1_0)
 166                 do_set_mux(CONTROL_PADCONF_WKUP,
 167                                 wkup_padconf_array_non_essential_4430,
 168                                 sizeof(wkup_padconf_array_non_essential_4430) /
 169                                 sizeof(struct pad_conf_entry));
 170 }
 171
 172 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_GENERIC_MMC)
 173 int board_mmc_init(bd_t *bis)
 174 {
 175         omap_mmc_init(0);
 176         return 0;
 177 }
 178 #endif
 179
 180 /*
 181  * get_board_rev() - get board revision
 182  */
 183 u32 get_board_rev(void)
 184 {
 185         return 0x20;
 186 }