1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2019 Rockchip Electronics Co., Ltd
7 #include <asm/arch-rockchip/grf_rk3188.h>
8 #include <asm/arch-rockchip/hardware.h>
10 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
11 void board_debug_uart_init(void)
13 /* Enable early UART on the RK3188 */
14 #define GRF_BASE 0x20008000
15 struct rk3188_grf * const grf = (void *)GRF_BASE;
30 rk_clrsetreg(&grf->gpio1b_iomux,
31 GPIO1B1_MASK << GPIO1B1_SHIFT |
32 GPIO1B0_MASK << GPIO1B0_SHIFT,
33 GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
34 GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);