// 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_PRO5_UART_CLK 73728000 unsigned int uniphier_pro5_debug_uart_init(void) { u32 tmp; sg_set_iectrl(0); sg_set_pinsel(47, 0, 4, 8); /* TXD0 -> TXD0 */ sg_set_pinsel(49, 0, 4, 8); /* TXD1 -> TXD1 */ sg_set_pinsel(51, 0, 4, 8); /* TXD2 -> TXD2 */ sg_set_pinsel(53, 0, 4, 8); /* TXD3 -> TXD3 */ 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_PRO5_UART_CLK, 16 * CONFIG_BAUDRATE); }