blob: adca19b683c09a1eaed454f2cc18ea3dfd80e8a9 [file] [log] [blame]
/*
* Copyright (c) 2018 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/arch/cpu.h>
#include <zephyr/devicetree.h>
#include <zephyr/init.h>
#ifdef CONFIG_UART_NS16550
static int uart_ns16550_init(void)
{
/* On ARC EM Starter kit board,
* send the UART the command to clear the interrupt
*/
#if DT_NODE_HAS_STATUS(DT_INST(0, ns16550), okay)
sys_write32(0, DT_REG_ADDR(DT_INST(0, ns16550))+0x4);
sys_write32(0, DT_REG_ADDR(DT_INST(0, ns16550))+0x10);
#endif /* DT_NODE_HAS_STATUS(DT_INST(0, ns16550), okay) */
#if DT_NODE_HAS_STATUS(DT_INST(1, ns16550), okay)
sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x4);
sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x10);
#endif /* DT_NODE_HAS_STATUS(DT_INST(1, ns16550), okay) */
return 0;
}
SYS_INIT(uart_ns16550_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
#endif /* CONFIG_UART_NS16550 */