diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index 8e5c3bcf61bbc4927b2ccf577df927bafba1efb6..77f6f520a0657fd50787ab2f5e22d32bba772c68 100644
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -17,6 +17,12 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+/**
+ * regmap_alloc() - Allocate a regmap with a given number of ranges.
+ *
+ * @count: Number of ranges to be allocated for the regmap.
+ * Return: A pointer to the newly allocated regmap, or NULL on error.
+ */
 static struct regmap *regmap_alloc(int count)
 {
 	struct regmap *map;