// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
 * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
 */

#include <common.h>
#include <asm/io.h>
#include <linux/bitops.h>
#include <linux/delay.h>

#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
#if (CONFIG_DEBUG_UART_BASE == STM32_UART4_BASE)

#define RCC_MP_APB1ENSETR (STM32_RCC_BASE + 0x0A00)
#define RCC_MP_AHB4ENSETR (STM32_RCC_BASE + 0x0A28)

	/* UART4 clock enable */
	setbits_le32(RCC_MP_APB1ENSETR, BIT(16));

#define GPIOG_BASE 0x50008000
	/* GPIOG clock enable */
	writel(BIT(6), RCC_MP_AHB4ENSETR);
	/* GPIO configuration for EVAL board
	 * => Uart4 TX = G11
	 */
	writel(0xffbfffff, GPIOG_BASE + 0x00);
	writel(0x00006000, GPIOG_BASE + 0x24);
#else

#error("CONFIG_DEBUG_UART_BASE: not supported value")

#endif
}
#endif