diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index aef2b36..c878a4b 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -33,6 +33,9 @@
  *                     can be read from.
  * @volatile_register: Optional callback returning true if the register
  *                     value can't be cached.
+ * @precious_register: Optional callback returning true if the rgister
+ *                     should not be read outside of a call from the driver
+ *                     (eg, a clear on read interrupt status register).
  */
 struct regmap_config {
 	int reg_bits;
@@ -42,6 +45,7 @@
 	bool (*writeable_reg)(struct device *dev, unsigned int reg);
 	bool (*readable_reg)(struct device *dev, unsigned int reg);
 	bool (*volatile_reg)(struct device *dev, unsigned int reg);
+	bool (*precious_reg)(struct device *dev, unsigned int reg);
 };
 
 typedef int (*regmap_hw_write)(struct device *dev, const void *data,