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-rw-r--r--arch/arm/mach-mxs/system.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/arm/mach-mxs/system.c b/arch/arm/mach-mxs/system.c
index 54f91ad..80ac1fc 100644
--- a/arch/arm/mach-mxs/system.c
+++ b/arch/arm/mach-mxs/system.c
@@ -25,7 +25,7 @@
#include <linux/module.h>
#include <asm/proc-fns.h>
-#include <asm/system.h>
+#include <asm/system_misc.h>
#include <mach/mxs.h>
#include <mach/common.h>
@@ -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;
+}