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 <log.h>
9#include <nuvoton_nct6102d.h>
10#include <asm/gpio.h>
11#include <asm/ibmpc.h>
12#include <asm/pnp_def.h>
13#include <linux/delay.h>
14
15int board_early_init_f(void)
16{
17#ifdef CONFIG_INTERNAL_UART
18	/* Disable the legacy UART which is enabled per default */
19	nct6102d_uarta_disable();
20#else
21	/*
22	 * The FSP enables the BayTrail internal legacy UART (again).
23	 * Disable it again, so that the Nuvoton one can be used.
24	 */
25	setup_internal_uart(0);
26#endif
27
28	/* Disable the watchdog which is enabled per default */
29	nct6102d_wdt_disable();
30
31	return 0;
32}
33
34int board_late_init(void)
35{
36	struct gpio_desc desc;
37	int ret;
38
39	ret = dm_gpio_lookup_name("F10", &desc);
40	if (ret)
41		debug("gpio ret=%d\n", ret);
42	ret = dm_gpio_request(&desc, "xhci_hub_reset");
43	if (ret)
44		debug("gpio_request ret=%d\n", ret);
45	ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
46	if (ret)
47		debug("gpio dir ret=%d\n", ret);
48
49	/* Pull xHCI hub reset to low (active low) */
50	dm_gpio_set_value(&desc, 0);
51
52	/* Wait at least 5 ms, so lets choose 10 to be safe */
53	mdelay(10);
54
55	/* Pull xHCI hub reset to high (active low) */
56	dm_gpio_set_value(&desc, 1);
57
58	return 0;
59}
60