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/*
* Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include "../sc-regs.h"
#include "../sg-regs.h"
#include "debug-uart.h"
#define UNIPHIER_PRO4_UART_CLK 73728000
unsigned int uniphier_pro4_debug_uart_init(void)
{
u32 tmp;
sg_set_iectrl(0);
sg_set_pinsel(128, 0, 4, 8); /* TXD0 -> TXD0 */
writel(1, SG_LOADPINCTRL);
tmp = readl(SC_CLKCTRL);
tmp |= SC_CLKCTRL_CEN_PERI;
writel(tmp, SC_CLKCTRL);
return DIV_ROUND_CLOSEST(UNIPHIER_PRO4_UART_CLK, 16 * CONFIG_BAUDRATE);
}
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