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- /*
- * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
- #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_LOADPINCTRL);
- tmp = readl(SC_CLKCTRL);
- tmp |= SC_CLKCTRL_CEN_PERI;
- writel(tmp, SC_CLKCTRL);
- return DIV_ROUND_CLOSEST(UNIPHIER_PRO4_UART_CLK, 16 * CONFIG_BAUDRATE);
- }
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