diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c')
-rw-r--r-- | roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c new file mode 100644 index 000000000..ef3b383ee --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c @@ -0,0 +1,33 @@ +// 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_PRO5_UART_CLK 73728000 + +unsigned int uniphier_pro5_debug_uart_init(void) +{ + u32 tmp; + + sg_set_iectrl(0); + sg_set_pinsel(47, 0, 4, 8); /* TXD0 -> TXD0 */ + sg_set_pinsel(49, 0, 4, 8); /* TXD1 -> TXD1 */ + sg_set_pinsel(51, 0, 4, 8); /* TXD2 -> TXD2 */ + sg_set_pinsel(53, 0, 4, 8); /* TXD3 -> TXD3 */ + + writel(1, sg_base + SG_LOADPINCTRL); + + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_PERI; + writel(tmp, sc_base + SC_CLKCTRL); + + return DIV_ROUND_CLOSEST(UNIPHIER_PRO5_UART_CLK, 16 * CONFIG_BAUDRATE); +} |