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 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