1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2022 MediaTek Inc. All rights reserved.
4  *
5  * Author: Weijie Gao <weijie.gao@mediatek.com>
6  */
7 
8 #include <asm/io.h>
9 #include <asm/addrspace.h>
10 #include "mt7621.h"
11 
board_debug_uart_init(void)12 void board_debug_uart_init(void)
13 {
14 	void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
15 
16 #if CONFIG_DEBUG_UART_BASE == 0xbe000c00 /* KSEG1ADDR(UART1_BASE) */
17 	clrbits_32(base + SYSCTL_GPIOMODE_REG, UART1_MODE);
18 #elif CONFIG_DEBUG_UART_BASE == 0xbe000d00 /* KSEG1ADDR(UART2_BASE) */
19 	clrbits_32(base + SYSCTL_GPIOMODE_REG, UART2_MODE_M);
20 #elif CONFIG_DEBUG_UART_BASE == 0xbe000e00 /* KSEG1ADDR(UART3_BASE) */
21 	clrbits_32(base + SYSCTL_GPIOMODE_REG, UART3_MODE_M);
22 #endif
23 }
24