bct-brettl2.c 2.2 KB

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  1. /*
  2. * U-Boot - main board file for BCT brettl2
  3. *
  4. * Copyright (c) 2010 BCT Electronic GmbH
  5. *
  6. * Licensed under the GPL-2 or later.
  7. */
  8. #include <common.h>
  9. #include <config.h>
  10. #include <command.h>
  11. #include <asm/blackfin.h>
  12. #include <asm/portmux.h>
  13. #include <asm/gpio.h>
  14. #include <net.h>
  15. #include <netdev.h>
  16. #include <miiphy.h>
  17. #include "../cm-bf537e/gpio_cfi_flash.h"
  18. #include "smsc9303.h"
  19. DECLARE_GLOBAL_DATA_PTR;
  20. int checkboard(void)
  21. {
  22. printf("Board: bct-brettl2 board\n");
  23. printf(" Support: http://www.bct-electronic.com/\n");
  24. return 0;
  25. }
  26. #ifdef CONFIG_BFIN_MAC
  27. int board_eth_init(bd_t *bis)
  28. {
  29. int retry = 3;
  30. int ret;
  31. ret = bfin_EMAC_initialize(bis);
  32. uchar enetaddr[6];
  33. if (eth_getenv_enetaddr("ethaddr", enetaddr)) {
  34. printf("setting MAC %pM\n", enetaddr);
  35. }
  36. puts(" ");
  37. puts("initialize SMSC LAN9303i ethernet switch\n");
  38. while (retry-- > 0) {
  39. if (init_smsc9303i_mii())
  40. return ret;
  41. }
  42. return ret;
  43. }
  44. #endif
  45. static void init_tlv320aic31(void)
  46. {
  47. puts("Audio: setup TIMER0 to enable 16.384 MHz clock for tlv320aic31\n");
  48. peripheral_request(P_TMR0, "tlv320aic31 clock");
  49. bfin_write_TIMER0_CONFIG(0x020d);
  50. bfin_write_TIMER0_PERIOD(0x0008);
  51. bfin_write_TIMER0_WIDTH(0x0008/2);
  52. bfin_write_TIMER_ENABLE(bfin_read_TIMER_ENABLE() | 1);
  53. SSYNC();
  54. udelay(10000);
  55. puts(" resetting tlv320aic31\n");
  56. gpio_request(GPIO_PF2, "tlv320aic31");
  57. gpio_direction_output(GPIO_PF2, 0);
  58. udelay(10000);
  59. gpio_direction_output(GPIO_PF2, 1);
  60. udelay(10000);
  61. gpio_free(GPIO_PF2);
  62. }
  63. static void init_mute_pin(void)
  64. {
  65. printf(" unmute class D amplifier\n");
  66. gpio_request(GPIO_PF5, "mute");
  67. gpio_direction_output(GPIO_PF5, 1);
  68. gpio_free(GPIO_PF5);
  69. }
  70. /* sometimes LEDs (speech, status) are still on after reboot, turn 'em off */
  71. static void turn_leds_off(void)
  72. {
  73. printf(" turn LEDs off\n");
  74. gpio_request(GPIO_PF6, "led");
  75. gpio_direction_output(GPIO_PF6, 0);
  76. gpio_free(GPIO_PF6);
  77. gpio_request(GPIO_PF15, "led");
  78. gpio_direction_output(GPIO_PF15, 0);
  79. gpio_free(GPIO_PF15);
  80. }
  81. /* miscellaneous platform dependent initialisations */
  82. int misc_init_r(void)
  83. {
  84. gpio_cfi_flash_init();
  85. init_tlv320aic31();
  86. init_mute_pin();
  87. turn_leds_off();
  88. return 0;
  89. }