// 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_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_base + SG_LOADPINCTRL); | |
tmp = readl(sc_base + SC_CLKCTRL); | |
tmp |= SC_CLKCTRL_CEN_PERI; | |
writel(tmp, sc_base + SC_CLKCTRL); | |
return DIV_ROUND_CLOSEST(UNIPHIER_PRO4_UART_CLK, 16 * CONFIG_BAUDRATE); | |
} |