1 files changed, 16 insertions, 0 deletions

diff --git a/arch/arm/mach-mxs/system.c b/arch/arm/mach-mxs/system.c
index 54f91ad1c965..7aa5ac5d78bf 100644
--- a/arch/arm/mach-mxs/system.c
+++ b/arch/arm/mach-mxs/system.c
@@ -37,6 +37,8 @@
 #define MXS_MODULE_CLKGATE              (1 << 30)
 #define MXS_MODULE_SFTRST               (1 << 31)
 
+#define CLKCTRL_TIMEOUT         10      /* 10 ms */
+
 static void __iomem *mxs_clkctrl_reset_addr;
 
 /*
@@ -137,3 +139,17 @@ error:
         return -ETIMEDOUT;
 }
 EXPORT_SYMBOL(mxs_reset_block);
+
+int mxs_clkctrl_timeout(unsigned int reg_offset, unsigned int mask)
+{
+        unsigned long timeout = jiffies + msecs_to_jiffies(CLKCTRL_TIMEOUT);
+        while (readl_relaxed(MXS_IO_ADDRESS(MXS_CLKCTRL_BASE_ADDR)
+                                                + reg_offset) & mask) {
+                if (time_after(jiffies, timeout)) {
+                        pr_err("Timeout at CLKCTRL + 0x%x\n", reg_offset);
+                        return -ETIMEDOUT;
+                }
+        }
+
+        return 0;
+}