xref: /kernel/linux/linux-5.10/drivers/clk/mxs/clk.c (revision 8c2ecf20) 
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