// SPDX-License-Identifier: GPL-2.0
/*
 * SH-Mobile Timer
 *
 * Copyright (C) 2010  Magnus Damm
 * Copyright (C) 2002 - 2009  Paul Mundt
 */
#include <linux/platform_device.h>
#include <linux/clocksource.h>
#include <linux/delay.h>
#include <linux/of_address.h>

#include "common.h"

void __init shmobile_init_delay(void)
{
        struct device_node *np;
        u32 max_freq = 0;

        for_each_of_cpu_node(np) {
                u32 freq;

                if (!of_property_read_u32(np, "clock-frequency", &freq))
                        max_freq = max(max_freq, freq);
        }

        if (!max_freq)
                return;

        /*
         * Calculate a worst-case loops-per-jiffy value
         * based on maximum cpu core hz setting and the
         * __delay() implementation in arch/arm/lib/delay.S.
         *
         * This will result in a longer delay than expected
         * when the cpu core runs on lower frequencies.
         */

        if (!preset_lpj)
                preset_lpj = max_freq / HZ;
}