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 
12 DEFINE_SPINLOCK(mxs_lock);
13 
mxs_clk_wait(void __iomem * reg,u8 shift)14 int 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