linux/drivers/clk/mxs/clk.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright 2012 Freescale Semiconductor, Inc.
   4 */
   5
   6#include <linux/err.h>
   7#include <linux/io.h>
   8#include <linux/jiffies.h>
   9#include <linux/spinlock.h>
  10#include "clk.h"
  11
  12DEFINE_SPINLOCK(mxs_lock);
  13
  14int mxs_clk_wait(void __iomem *reg, u8 shift)
  15{
  16        unsigned long timeout = jiffies + msecs_to_jiffies(10);
  17
  18        while (readl_relaxed(reg) & (1 << shift))
  19                if (time_after(jiffies, timeout))
  20                        return -ETIMEDOUT;
  21
  22        return 0;
  23}
  24