// 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); | |
} |