| /* |
| * 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) |
