diff --git a/drivers/regulator/rk29-pwm-regulator.c b/drivers/regulator/rk29-pwm-regulator.c
index 8b998eb5e9b6..4091dc3f92a7 100644
--- a/drivers/regulator/rk29-pwm-regulator.c
+++ b/drivers/regulator/rk29-pwm-regulator.c
@@ -107,7 +107,7 @@ static int pwm_set_rate(struct pwm_platform_data *pdata,int nHz,u32 rate)
 	return -1;
 	}
 
-	msleep(5);
+	msleep(10);
 	
 	
     return (0);