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 #include <asm/gpio.h>
  30
  31 #include "panda_mux_data.h"
  32
  33 #ifdef CONFIG_USB_EHCI
  34 #include <usb.h>
  35 #include <asm/arch/ehci.h>
  36 #include <asm/ehci-omap.h>
  37 #endif
  38
  39 #define PANDA_ULPI_PHY_TYPE_GPIO       182
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 const struct omap_sysinfo sysinfo = {
  44         "Board: OMAP4 Panda\n"
  45 };
  46
  47 struct omap4_scrm_regs *const scrm = (struct omap4_scrm_regs *)0x4a30a000;
  48
  49 /**
  50  * @brief board_init
  51  *
  52  * @return 0
  53  */
  54 int board_init(void)
  55 {
  56         gpmc_init();
  57
  58         gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
  59         gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
  60
  61         return 0;
  62 }
  63
  64 int board_eth_init(bd_t *bis)
  65 {
  66         return 0;
  67 }
  68
  69 /**
  70  * @brief misc_init_r - Configure Panda board specific configurations
  71  * such as power configurations, ethernet initialization as phase2 of
  72  * boot sequence
  73  *
  74  * @return 0
  75  */
  76 int misc_init_r(void)
  77 {
  78         int phy_type;
  79         u32 auxclk, altclksrc;
  80
  81         /* EHCI is not supported on ES1.0 */
  82         if (omap_revision() == OMAP4430_ES1_0)
  83                 return 0;
  84
  85 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
  86         if (omap_revision() >= OMAP4460_ES1_0 ||
  87                 omap_revision() <= OMAP4460_ES1_1)
  88                 setenv("board_name", strcat(CONFIG_SYS_BOARD, "-es"));
  89 #endif
  90
  91         gpio_direction_input(PANDA_ULPI_PHY_TYPE_GPIO);
  92         phy_type = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
  93
  94         if (phy_type == 1) {
  95                 /* ULPI PHY supplied by auxclk3 derived from sys_clk */
  96                 debug("ULPI PHY supplied by auxclk3\n");
  97
  98                 auxclk = readl(&scrm->auxclk3);
  99                 /* Select sys_clk */
 100                 auxclk &= ~AUXCLK_SRCSELECT_MASK;
 101                 auxclk |=  AUXCLK_SRCSELECT_SYS_CLK << AUXCLK_SRCSELECT_SHIFT;
 102                 /* Set the divisor to 2 */
 103                 auxclk &= ~AUXCLK_CLKDIV_MASK;
 104                 auxclk |= AUXCLK_CLKDIV_2 << AUXCLK_CLKDIV_SHIFT;
 105                 /* Request auxilary clock #3 */
 106                 auxclk |= AUXCLK_ENABLE_MASK;
 107
 108                 writel(auxclk, &scrm->auxclk3);
 109        } else {
 110                 /* ULPI PHY supplied by auxclk1 derived from PER dpll */
 111                 debug("ULPI PHY supplied by auxclk1\n");
 112
 113                 auxclk = readl(&scrm->auxclk1);
 114                 /* Select per DPLL */
 115                 auxclk &= ~AUXCLK_SRCSELECT_MASK;
 116                 auxclk |=  AUXCLK_SRCSELECT_PER_DPLL << AUXCLK_SRCSELECT_SHIFT;
 117                 /* Set the divisor to 16 */
 118                 auxclk &= ~AUXCLK_CLKDIV_MASK;
 119                 auxclk |= AUXCLK_CLKDIV_16 << AUXCLK_CLKDIV_SHIFT;
 120                 /* Request auxilary clock #3 */
 121                 auxclk |= AUXCLK_ENABLE_MASK;
 122
 123                 writel(auxclk, &scrm->auxclk1);
 124         }
 125
 126         altclksrc = readl(&scrm->altclksrc);
 127
 128         /* Activate alternate system clock supplier */
 129         altclksrc &= ~ALTCLKSRC_MODE_MASK;
 130         altclksrc |= ALTCLKSRC_MODE_ACTIVE;
 131
 132         /* enable clocks */
 133         altclksrc |= ALTCLKSRC_ENABLE_INT_MASK | ALTCLKSRC_ENABLE_EXT_MASK;
 134
 135         writel(altclksrc, &scrm->altclksrc);
 136
 137         return 0;
 138 }
 139
 140 void set_muxconf_regs_essential(void)
 141 {
 142         do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_essential,
 143                    sizeof(core_padconf_array_essential) /
 144                    sizeof(struct pad_conf_entry));
 145
 146         do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_essential,
 147                    sizeof(wkup_padconf_array_essential) /
 148                    sizeof(struct pad_conf_entry));
 149
 150         if (omap_revision() >= OMAP4460_ES1_0)
 151                 do_set_mux(CONTROL_PADCONF_WKUP,
 152                                  wkup_padconf_array_essential_4460,
 153                                  sizeof(wkup_padconf_array_essential_4460) /
 154                                  sizeof(struct pad_conf_entry));
 155 }
 156
 157 void set_muxconf_regs_non_essential(void)
 158 {
 159         do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_non_essential,
 160                    sizeof(core_padconf_array_non_essential) /
 161                    sizeof(struct pad_conf_entry));
 162
 163         if (omap_revision() < OMAP4460_ES1_0)
 164                 do_set_mux(CONTROL_PADCONF_CORE,
 165                                 core_padconf_array_non_essential_4430,
 166                                 sizeof(core_padconf_array_non_essential_4430) /
 167                                 sizeof(struct pad_conf_entry));
 168         else
 169                 do_set_mux(CONTROL_PADCONF_CORE,
 170                                 core_padconf_array_non_essential_4460,
 171                                 sizeof(core_padconf_array_non_essential_4460) /
 172                                 sizeof(struct pad_conf_entry));
 173
 174         do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_non_essential,
 175                    sizeof(wkup_padconf_array_non_essential) /
 176                    sizeof(struct pad_conf_entry));
 177
 178         if (omap_revision() < OMAP4460_ES1_0)
 179                 do_set_mux(CONTROL_PADCONF_WKUP,
 180                                 wkup_padconf_array_non_essential_4430,
 181                                 sizeof(wkup_padconf_array_non_essential_4430) /
 182                                 sizeof(struct pad_conf_entry));
 183 }
 184
 185 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_GENERIC_MMC)
 186 int board_mmc_init(bd_t *bis)
 187 {
 188         return omap_mmc_init(0, 0, 0, -1, -1);
 189 }
 190 #endif
 191
 192 #ifdef CONFIG_USB_EHCI
 193
 194 static struct omap_usbhs_board_data usbhs_bdata = {
 195         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 196         .port_mode[1] = OMAP_USBHS_PORT_MODE_UNUSED,
 197         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 198 };
 199
 200 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 201 {
 202         int ret;
 203         unsigned int utmi_clk;
 204
 205         /* Now we can enable our port clocks */
 206         utmi_clk = readl((void *)CM_L3INIT_HSUSBHOST_CLKCTRL);
 207         utmi_clk |= HSUSBHOST_CLKCTRL_CLKSEL_UTMI_P1_MASK;
 208         sr32((void *)CM_L3INIT_HSUSBHOST_CLKCTRL, 0, 32, utmi_clk);
 209
 210         ret = omap_ehci_hcd_init(&usbhs_bdata, hccr, hcor);
 211         if (ret < 0)
 212                 return ret;
 213
 214         return 0;
 215 }
 216
 217 int ehci_hcd_stop(int index)
 218 {
 219         return omap_ehci_hcd_stop();
 220 }
 221 #endif
 222
 223 /*
 224  * get_board_rev() - get board revision
 225  */
 226 u32 get_board_rev(void)
 227 {
 228         return 0x20;
 229 }