mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 13:56:30 +00:00
32 lines
619 B
C
32 lines
619 B
C
|
/*
|
||
|
|
* 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);
|
||
|
|
}
|