1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #include <config.h> 8*4882a593Smuzhiyun #include <linux/kernel.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include "../sg-regs.h" 11*4882a593Smuzhiyun #include "debug-uart.h" 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define UNIPHIER_LD4_UART_CLK 36864000 14*4882a593Smuzhiyun uniphier_ld4_debug_uart_init(void)15*4882a593Smuzhiyununsigned int uniphier_ld4_debug_uart_init(void) 16*4882a593Smuzhiyun { 17*4882a593Smuzhiyun sg_set_iectrl(0); 18*4882a593Smuzhiyun sg_set_pinsel(88, 1, 8, 4); /* HSDOUT6 -> TXD0 */ 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun return DIV_ROUND_CLOSEST(UNIPHIER_LD4_UART_CLK, 16 * CONFIG_BAUDRATE); 21*4882a593Smuzhiyun } 22