1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2018 Stefan Roese <sr@denx.de> 4 */ 5 6 #include <common.h> 7 #include <asm/io.h> 8 9 #define MT76XX_GPIO1_MODE 0x10000060 10 board_debug_uart_init(void)11void board_debug_uart_init(void) 12 { 13 void __iomem *gpio_mode; 14 15 /* Select UART2 mode instead of GPIO mode (default) */ 16 gpio_mode = ioremap_nocache(MT76XX_GPIO1_MODE, 0x100); 17 clrbits_le32(gpio_mode, GENMASK(27, 26)); 18 } 19 board_early_init_f(void)20int board_early_init_f(void) 21 { 22 /* 23 * The pin muxing of UART2 also needs to be done, if debug uart 24 * is not enabled. So we need to call this function here as well. 25 */ 26 board_debug_uart_init(); 27 28 return 0; 29 } 30