| /* | |
| * 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 <asm/arch/sc-regs.h> | |
| #include <asm/arch/sg-regs.h> | |
| #define UART_CLK 73728000 | |
| #include <asm/arch/debug-uart.S> | |
| ENTRY(setup_lowlevel_debug) | |
| ldr r0, =SC_CLKCTRL | |
| ldr r1, [r0] | |
| orr r1, r1, #SC_CLKCTRL_CLK_PERI | |
| str r1, [r0] | |
| init_debug_uart r0, r1, r2 | |
| /* UART Port 0 */ | |
| set_pinsel 127, 0, r0, r1 | |
| set_pinsel 128, 0, r0, r1 | |
| ldr r0, =SG_LOADPINCTRL | |
| mov r1, #1 | |
| str r1, [r0] | |
| ldr r0, =SG_IECTRL | |
| ldr r1, [r0] | |
| orr r1, r1, #1 | |
| str r1, [r0] | |
| mov pc, lr | |
| ENDPROC(setup_lowlevel_debug) |