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