diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c')
-rw-r--r-- | roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c new file mode 100644 index 000000000..f64ff39c9 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#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_LD6B_UART_CLK 88888888 + +unsigned int uniphier_ld6b_debug_uart_init(void) +{ + u32 tmp; + + sg_set_iectrl(0); + sg_set_pinsel(135, 3, 8, 4); /* PORT10 -> TXD0 */ + sg_set_pinsel(115, 0, 8, 4); /* TXD1 -> TXD1 */ + sg_set_pinsel(113, 2, 8, 4); /* SBO0 -> TXD2 */ + + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_PERI; + writel(tmp, sc_base + SC_CLKCTRL); + + return DIV_ROUND_CLOSEST(UNIPHIER_LD6B_UART_CLK, 16 * CONFIG_BAUDRATE); +} |