arm-trusted-firmware/plat/mediatek/mt8183/drivers/timer/mt_timer.c

30 lines
632 B
C

/*
* Copyright (c) 2020, MediaTek Inc. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <common/debug.h>
#include <lib/mmio.h>
#include <mcucfg.h>
#include <mt_timer.h>
#include <platform_def.h>
static void enable_systimer_compensation(void)
{
unsigned int reg;
reg = mmio_read_32(CNTCR_REG);
reg &= ~COMP_15_EN;
reg |= COMP_20_EN;
mmio_write_32(CNTCR_REG, reg);
NOTICE("[systimer] CNTCR_REG(0x%x)\n", mmio_read_32(CNTCR_REG));
}
void mt_systimer_init(void)
{
/* systimer is default on, so we only enable systimer compensation */
enable_systimer_compensation();
}