root/drivers/clk/mxs/clk.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 2012 Freescale Semiconductor, Inc.
 */

#include <linux/err.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/spinlock.h>
#include "clk.h"

DEFINE_SPINLOCK(mxs_lock);

int mxs_clk_wait(void __iomem *reg, u8 shift)
{
        unsigned long timeout = jiffies + msecs_to_jiffies(10);

        while (readl_relaxed(reg) & (1 << shift))
                if (time_after(jiffies, timeout))
                        return -ETIMEDOUT;

        return 0;
}