31 lines
687 B
C
31 lines
687 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*/
|
|
|
|
#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_LD6B_UART_CLK 88888888
|
|
|
|
unsigned int uniphier_ld6b_debug_uart_init(void)
|
|
{
|
|
u32 tmp;
|
|
|
|
sg_set_iectrl(0);
|
|
sg_set_pinsel(135, 3, 8, 4); /* PORT10 -> TXD0 */
|
|
sg_set_pinsel(115, 0, 8, 4); /* TXD1 -> TXD1 */
|
|
sg_set_pinsel(113, 2, 8, 4); /* SBO0 -> TXD2 */
|
|
|
|
tmp = readl(SC_CLKCTRL);
|
|
tmp |= SC_CLKCTRL_CEN_PERI;
|
|
writel(tmp, SC_CLKCTRL);
|
|
|
|
return DIV_ROUND_CLOSEST(UNIPHIER_LD6B_UART_CLK, 16 * CONFIG_BAUDRATE);
|
|
}
|