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