35 lines
845 B
C
35 lines
845 B
C
// SPDX-License-Identifier: GPL-2.0+
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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 "../sc64-regs.h"
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#include "../sg-regs.h"
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#include "debug-uart.h"
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#define UNIPHIER_LD20_UART_CLK 58820000
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unsigned int uniphier_ld20_debug_uart_init(void)
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{
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u32 tmp;
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sg_set_iectrl(54); /* TXD0 */
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sg_set_iectrl(58); /* TXD1 */
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sg_set_iectrl(90); /* TXD2 */
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sg_set_iectrl(94); /* TXD3 */
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sg_set_pinsel(54, 0, 8, 4); /* TXD0 -> TXD0 */
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sg_set_pinsel(58, 1, 8, 4); /* SPITXD1 -> TXD1 */
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sg_set_pinsel(90, 1, 8, 4); /* PC0WE -> TXD2 */
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sg_set_pinsel(94, 1, 8, 4); /* PCD00 -> TXD3 */
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tmp = readl(SC_CLKCTRL4);
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tmp |= SC_CLKCTRL4_PERI;
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writel(tmp, SC_CLKCTRL4);
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return DIV_ROUND_CLOSEST(UNIPHIER_LD20_UART_CLK, 16 * CONFIG_BAUDRATE);
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}
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