board/ti/panda/panda.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2010
   4  * Texas Instruments Incorporated, <www.ti.com>
   5  * Steve Sakoman  <steve@sakoman.com>
   6  */
   7 #include <common.h>
   8 #include <asm/mach-types.h>
   9 #include <asm/arch/sys_proto.h>
  10 #include <asm/arch/mmc_host_def.h>
  11 #include <asm/arch/clock.h>
  12 #include <asm/arch/gpio.h>
  13 #include <asm/gpio.h>
  14 #include <env.h>
  15 #include <twl6030.h>
  16
  17 #include "panda_mux_data.h"
  18
  19 #ifdef CONFIG_USB_EHCI_HCD
  20 #include <usb.h>
  21 #include <asm/arch/ehci.h>
  22 #include <asm/ehci-omap.h>
  23 #endif
  24
  25 #define PANDA_ULPI_PHY_TYPE_GPIO       182
  26 #define PANDA_BOARD_ID_1_GPIO          101
  27 #define PANDA_ES_BOARD_ID_1_GPIO        48
  28 #define PANDA_BOARD_ID_2_GPIO          171
  29 #define PANDA_ES_BOARD_ID_3_GPIO         3
  30 #define PANDA_ES_BOARD_ID_4_GPIO         2
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 const struct omap_sysinfo sysinfo = {
  35         "Board: OMAP4 Panda\n"
  36 };
  37
  38 struct omap4_scrm_regs *const scrm = (struct omap4_scrm_regs *)0x4a30a000;
  39
  40 /**
  41  * @brief board_init
  42  *
  43  * @return 0
  44  */
  45 int board_init(void)
  46 {
  47         gpmc_init();
  48
  49         gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
  50         gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
  51
  52         return 0;
  53 }
  54
  55 int board_eth_init(bd_t *bis)
  56 {
  57         return 0;
  58 }
  59
  60 /*
  61 * Routine: get_board_revision
  62 * Description: Detect if we are running on a panda revision A1-A6,
  63 *              or an ES panda board. This can be done by reading
  64 *              the level of GPIOs and checking the processor revisions.
  65 *              This should result in:
  66 *                       Panda 4430:
  67 *              GPIO171, GPIO101, GPIO182: 0 1 1 => A1-A5
  68 *              GPIO171, GPIO101, GPIO182: 1 0 1 => A6
  69 *                       Panda ES:
  70 *              GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 0 1 1 => B1/B2
  71 *              GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 1 1 1 => B3
  72 */
  73 int get_board_revision(void)
  74 {
  75         int board_id0, board_id1, board_id2;
  76         int board_id3, board_id4;
  77         int board_id;
  78
  79         int processor_rev = omap_revision();
  80
  81         /* Setup the mux for the common board ID pins (gpio 171 and 182) */
  82         writew((IEN | M3), (*ctrl)->control_padconf_core_base + UNIPRO_TX0);
  83         writew((IEN | M3), (*ctrl)->control_padconf_core_base + FREF_CLK2_OUT);
  84
  85         board_id0 = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
  86         board_id2 = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
  87
  88         if ((processor_rev >= OMAP4460_ES1_0 &&
  89              processor_rev <= OMAP4460_ES1_1)) {
  90                 /*
  91                  * Setup the mux for the ES specific board ID pins (gpio 101,
  92                  * 2 and 3.
  93                  */
  94                 writew((IEN | M3), (*ctrl)->control_padconf_core_base +
  95                                 GPMC_A24);
  96                 writew((IEN | M3), (*ctrl)->control_padconf_core_base +
  97                                 UNIPRO_RY0);
  98                 writew((IEN | M3), (*ctrl)->control_padconf_core_base +
  99                                 UNIPRO_RX1);
 100
 101                 board_id1 = gpio_get_value(PANDA_ES_BOARD_ID_1_GPIO);
 102                 board_id3 = gpio_get_value(PANDA_ES_BOARD_ID_3_GPIO);
 103                 board_id4 = gpio_get_value(PANDA_ES_BOARD_ID_4_GPIO);
 104
 105 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 106                 env_set("board_name", "panda-es");
 107 #endif
 108                 board_id = ((board_id4 << 4) | (board_id3 << 3) |
 109                         (board_id2 << 2) | (board_id1 << 1) | (board_id0));
 110         } else {
 111                 /* Setup the mux for the Ax specific board ID pins (gpio 101) */
 112                 writew((IEN | M3), (*ctrl)->control_padconf_core_base +
 113                                 FREF_CLK2_OUT);
 114
 115                 board_id1 = gpio_get_value(PANDA_BOARD_ID_1_GPIO);
 116                 board_id = ((board_id2 << 2) | (board_id1 << 1) | (board_id0));
 117
 118 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 119                 if ((board_id >= 0x3) && (processor_rev == OMAP4430_ES2_3))
 120                         env_set("board_name", "panda-a4");
 121 #endif
 122         }
 123
 124         return board_id;
 125 }
 126
 127 /**
 128  * is_panda_es_rev_b3() - Detect if we are running on rev B3 of panda board ES
 129  *
 130  *
 131  * Detect if we are running on B3 version of ES panda board,
 132  * This can be done by reading the level of GPIO 171 and checking the
 133  * processor revisions.
 134  * GPIO171: 1 => Panda ES Rev B3
 135  *
 136  * Return : return 1 if Panda ES Rev B3 , else return 0
 137  */
 138 u8 is_panda_es_rev_b3(void)
 139 {
 140         int processor_rev = omap_revision();
 141         int ret = 0;
 142
 143         if ((processor_rev >= OMAP4460_ES1_0 &&
 144              processor_rev <= OMAP4460_ES1_1)) {
 145
 146                 /* Setup the mux for the common board ID pins (gpio 171) */
 147                 writew((IEN | M3),
 148                         (*ctrl)->control_padconf_core_base + UNIPRO_TX0);
 149
 150                 /* if processor_rev is panda ES and GPIO171 is 1,it is rev b3 */
 151                 ret = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
 152         }
 153         return ret;
 154 }
 155
 156 #ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
 157 /*
 158  * emif_get_reg_dump() - emif_get_reg_dump strong function
 159  *
 160  * @emif_nr - emif base
 161  * @regs - reg dump of timing values
 162  *
 163  * Strong function to override emif_get_reg_dump weak function in sdram_elpida.c
 164  */
 165 void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 166 {
 167         u32 omap4_rev = omap_revision();
 168
 169         /* Same devices and geometry on both EMIFs */
 170         if (omap4_rev == OMAP4430_ES1_0)
 171                 *regs = &emif_regs_elpida_380_mhz_1cs;
 172         else if (omap4_rev == OMAP4430_ES2_0)
 173                 *regs = &emif_regs_elpida_200_mhz_2cs;
 174         else if (omap4_rev == OMAP4430_ES2_3)
 175                 *regs = &emif_regs_elpida_400_mhz_1cs;
 176         else if (omap4_rev < OMAP4470_ES1_0) {
 177                 if(is_panda_es_rev_b3())
 178                         *regs = &emif_regs_elpida_400_mhz_1cs;
 179                 else
 180                         *regs = &emif_regs_elpida_400_mhz_2cs;
 181         }
 182         else
 183                 *regs = &emif_regs_elpida_400_mhz_1cs;
 184 }
 185
 186 void emif_get_dmm_regs(const struct dmm_lisa_map_regs
 187                                                 **dmm_lisa_regs)
 188 {
 189         u32 omap_rev = omap_revision();
 190
 191         if (omap_rev == OMAP4430_ES1_0)
 192                 *dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
 193         else if (omap_rev == OMAP4430_ES2_3)
 194                 *dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
 195         else if (omap_rev < OMAP4460_ES1_0)
 196                 *dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
 197         else
 198                 *dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
 199 }
 200
 201 #endif
 202
 203 /**
 204  * @brief misc_init_r - Configure Panda board specific configurations
 205  * such as power configurations, ethernet initialization as phase2 of
 206  * boot sequence
 207  *
 208  * @return 0
 209  */
 210 int misc_init_r(void)
 211 {
 212         int phy_type;
 213         u32 auxclk, altclksrc;
 214
 215         /* EHCI is not supported on ES1.0 */
 216         if (omap_revision() == OMAP4430_ES1_0)
 217                 return 0;
 218
 219         get_board_revision();
 220
 221         gpio_direction_input(PANDA_ULPI_PHY_TYPE_GPIO);
 222         phy_type = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
 223
 224         if (phy_type == 1) {
 225                 /* ULPI PHY supplied by auxclk3 derived from sys_clk */
 226                 debug("ULPI PHY supplied by auxclk3\n");
 227
 228                 auxclk = readl(&scrm->auxclk3);
 229                 /* Select sys_clk */
 230                 auxclk &= ~AUXCLK_SRCSELECT_MASK;
 231                 auxclk |=  AUXCLK_SRCSELECT_SYS_CLK << AUXCLK_SRCSELECT_SHIFT;
 232                 /* Set the divisor to 2 */
 233                 auxclk &= ~AUXCLK_CLKDIV_MASK;
 234                 auxclk |= AUXCLK_CLKDIV_2 << AUXCLK_CLKDIV_SHIFT;
 235                 /* Request auxilary clock #3 */
 236                 auxclk |= AUXCLK_ENABLE_MASK;
 237
 238                 writel(auxclk, &scrm->auxclk3);
 239         } else {
 240                 /* ULPI PHY supplied by auxclk1 derived from PER dpll */
 241                 debug("ULPI PHY supplied by auxclk1\n");
 242
 243                 auxclk = readl(&scrm->auxclk1);
 244                 /* Select per DPLL */
 245                 auxclk &= ~AUXCLK_SRCSELECT_MASK;
 246                 auxclk |=  AUXCLK_SRCSELECT_PER_DPLL << AUXCLK_SRCSELECT_SHIFT;
 247                 /* Set the divisor to 16 */
 248                 auxclk &= ~AUXCLK_CLKDIV_MASK;
 249                 auxclk |= AUXCLK_CLKDIV_16 << AUXCLK_CLKDIV_SHIFT;
 250                 /* Request auxilary clock #3 */
 251                 auxclk |= AUXCLK_ENABLE_MASK;
 252
 253                 writel(auxclk, &scrm->auxclk1);
 254         }
 255
 256         altclksrc = readl(&scrm->altclksrc);
 257
 258         /* Activate alternate system clock supplier */
 259         altclksrc &= ~ALTCLKSRC_MODE_MASK;
 260         altclksrc |= ALTCLKSRC_MODE_ACTIVE;
 261
 262         /* enable clocks */
 263         altclksrc |= ALTCLKSRC_ENABLE_INT_MASK | ALTCLKSRC_ENABLE_EXT_MASK;
 264
 265         writel(altclksrc, &scrm->altclksrc);
 266
 267         omap_die_id_usbethaddr();
 268
 269         return 0;
 270 }
 271
 272 void set_muxconf_regs(void)
 273 {
 274         do_set_mux((*ctrl)->control_padconf_core_base,
 275                    core_padconf_array_essential,
 276                    sizeof(core_padconf_array_essential) /
 277                    sizeof(struct pad_conf_entry));
 278
 279         do_set_mux((*ctrl)->control_padconf_wkup_base,
 280                    wkup_padconf_array_essential,
 281                    sizeof(wkup_padconf_array_essential) /
 282                    sizeof(struct pad_conf_entry));
 283
 284         if (omap_revision() >= OMAP4460_ES1_0)
 285                 do_set_mux((*ctrl)->control_padconf_wkup_base,
 286                            wkup_padconf_array_essential_4460,
 287                            sizeof(wkup_padconf_array_essential_4460) /
 288                            sizeof(struct pad_conf_entry));
 289 }
 290
 291 #if defined(CONFIG_MMC)
 292 int board_mmc_init(bd_t *bis)
 293 {
 294         return omap_mmc_init(0, 0, 0, -1, -1);
 295 }
 296
 297 #if !defined(CONFIG_SPL_BUILD)
 298 void board_mmc_power_init(void)
 299 {
 300         twl6030_power_mmc_init(0);
 301 }
 302 #endif
 303 #endif
 304
 305 #ifdef CONFIG_USB_EHCI_HCD
 306
 307 static struct omap_usbhs_board_data usbhs_bdata = {
 308         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 309         .port_mode[1] = OMAP_USBHS_PORT_MODE_UNUSED,
 310         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 311 };
 312
 313 int ehci_hcd_init(int index, enum usb_init_type init,
 314                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 315 {
 316         int ret;
 317         unsigned int utmi_clk;
 318
 319         /* Now we can enable our port clocks */
 320         utmi_clk = readl((void *)CM_L3INIT_HSUSBHOST_CLKCTRL);
 321         utmi_clk |= HSUSBHOST_CLKCTRL_CLKSEL_UTMI_P1_MASK;
 322         setbits_le32((void *)CM_L3INIT_HSUSBHOST_CLKCTRL, utmi_clk);
 323
 324         ret = omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 325         if (ret < 0)
 326                 return ret;
 327
 328         return 0;
 329 }
 330
 331 int ehci_hcd_stop(int index)
 332 {
 333         return omap_ehci_hcd_stop();
 334 }
 335 #endif
 336
 337 /*
 338  * get_board_rev() - get board revision
 339  */
 340 u32 get_board_rev(void)
 341 {
 342         return 0x20;
 343 }