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// 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
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