LXR uboot/board/dfi/dfi-bt700/dfi-bt700.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
   4 */
   5
   6#include <common.h>
   7#include <init.h>
   8#include <nuvoton_nct6102d.h>
   9#include <asm/gpio.h>
  10#include <asm/ibmpc.h>
  11#include <asm/pnp_def.h>
  12
  13int board_early_init_f(void)
  14{
  15#ifdef CONFIG_INTERNAL_UART
  16        /* Disable the legacy UART which is enabled per default */
  17        nct6102d_uarta_disable();
  18#else
  19        /*
  20         * The FSP enables the BayTrail internal legacy UART (again).
  21         * Disable it again, so that the Nuvoton one can be used.
  22         */
  23        setup_internal_uart(0);
  24#endif
  25
  26        /* Disable the watchdog which is enabled per default */
  27        nct6102d_wdt_disable();
  28
  29        return 0;
  30}
  31
  32int board_late_init(void)
  33{
  34        struct gpio_desc desc;
  35        int ret;
  36
  37        ret = dm_gpio_lookup_name("F10", &desc);
  38        if (ret)
  39                debug("gpio ret=%d\n", ret);
  40        ret = dm_gpio_request(&desc, "xhci_hub_reset");
  41        if (ret)
  42                debug("gpio_request ret=%d\n", ret);
  43        ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  44        if (ret)
  45                debug("gpio dir ret=%d\n", ret);
  46
  47        /* Pull xHCI hub reset to low (active low) */
  48        dm_gpio_set_value(&desc, 0);
  49
  50        /* Wait at least 5 ms, so lets choose 10 to be safe */
  51        mdelay(10);
  52
  53        /* Pull xHCI hub reset to high (active low) */
  54        dm_gpio_set_value(&desc, 1);
  55
  56        return 0;
  57}
  58