dfi-bt700.c 1.2 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2016 Stefan Roese <sr@denx.de>
  4. */
  5. #include <common.h>
  6. #include <init.h>
  7. #include <nuvoton_nct6102d.h>
  8. #include <asm/gpio.h>
  9. #include <asm/ibmpc.h>
  10. #include <asm/pnp_def.h>
  11. int board_early_init_f(void)
  12. {
  13. #ifdef CONFIG_INTERNAL_UART
  14. /* Disable the legacy UART which is enabled per default */
  15. nct6102d_uarta_disable();
  16. #else
  17. /*
  18. * The FSP enables the BayTrail internal legacy UART (again).
  19. * Disable it again, so that the Nuvoton one can be used.
  20. */
  21. setup_internal_uart(0);
  22. #endif
  23. /* Disable the watchdog which is enabled per default */
  24. nct6102d_wdt_disable();
  25. return 0;
  26. }
  27. int board_late_init(void)
  28. {
  29. struct gpio_desc desc;
  30. int ret;
  31. ret = dm_gpio_lookup_name("F10", &desc);
  32. if (ret)
  33. debug("gpio ret=%d\n", ret);
  34. ret = dm_gpio_request(&desc, "xhci_hub_reset");
  35. if (ret)
  36. debug("gpio_request ret=%d\n", ret);
  37. ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  38. if (ret)
  39. debug("gpio dir ret=%d\n", ret);
  40. /* Pull xHCI hub reset to low (active low) */
  41. dm_gpio_set_value(&desc, 0);
  42. /* Wait at least 5 ms, so lets choose 10 to be safe */
  43. mdelay(10);
  44. /* Pull xHCI hub reset to high (active low) */
  45. dm_gpio_set_value(&desc, 1);
  46. return 0;
  47. }