2018-05-06 21:58:06 +00:00
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// SPDX-License-Identifier: GPL-2.0+
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2016-03-18 07:41:52 +00:00
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/*
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* Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
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*/
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#include <config.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include "../sc-regs.h"
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#include "../sg-regs.h"
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#include "debug-uart.h"
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#define UNIPHIER_PRO4_UART_CLK 73728000
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unsigned int uniphier_pro4_debug_uart_init(void)
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{
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u32 tmp;
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sg_set_iectrl(0);
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sg_set_pinsel(128, 0, 4, 8); /* TXD0 -> TXD0 */
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writel(1, SG_LOADPINCTRL);
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tmp = readl(SC_CLKCTRL);
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tmp |= SC_CLKCTRL_CEN_PERI;
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writel(tmp, SC_CLKCTRL);
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return DIV_ROUND_CLOSEST(UNIPHIER_PRO4_UART_CLK, 16 * CONFIG_BAUDRATE);
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}
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