| 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(m: 10); |
| 17 | |
| 18 | while (readl_relaxed(reg) & (1 << shift)) |
| 19 | if (time_after(jiffies, timeout)) |
| 20 | return -ETIMEDOUT; |
| 21 | |
| 22 | return 0; |
| 23 | } |
| 24 |