diff options
Diffstat (limited to 'arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S')
| -rw-r--r-- | arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S b/arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S new file mode 100644 index 0000000..7928c5c --- /dev/null +++ b/arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S @@ -0,0 +1,29 @@ +/* + * On-chip UART initializaion for low-level debugging + * + * Copyright (C) 2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/linkage.h> +#include <mach/sg-regs.h> + +#define UART_CLK 36864000 +#include <mach/debug-uart.S> + +ENTRY(setup_lowlevel_debug) + init_debug_uart r0, r1, r2 + + /* UART Port 0 */ + set_pinsel 85, 1, r0, r1 + set_pinsel 88, 1, r0, r1 + + ldr r0, =SG_IECTRL + ldr r1, [r0] + orr r1, r1, #1 + str r1, [r0] + + mov pc, lr +ENDPROC(setup_lowlevel_debug) |