2018-05-07 07:27:01 +09:00
|
|
|
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
2018-03-12 18:46:18 +09:00
|
|
|
/*
|
|
|
|
|
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <common.h>
|
|
|
|
|
#include <asm/io.h>
|
2020-05-11 02:40:13 +09:00
|
|
|
#include <linux/bitops.h>
|
2020-05-11 02:40:11 +09:00
|
|
|
#include <linux/delay.h>
|
2018-03-12 18:46:18 +09:00
|
|
|
|
2018-05-17 21:50:46 +09:00
|
|
|
#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
|
