diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h
index dcdc19137cc..ca788dccb39 100644
--- a/include/dm/fdtaddr.h
+++ b/include/dm/fdtaddr.h
@@ -19,7 +19,7 @@ struct udevice;
  *
  * @dev: Pointer to a device
  *
- * Return: addr
+ * Return: Address, or FDT_ADDR_T_NONE if there is no such property
  */
 fdt_addr_t devfdt_get_addr(const struct udevice *dev);
 
@@ -59,7 +59,7 @@ void *devfdt_remap_addr_index(const struct udevice *dev, int index);
  * devfdt_remap_addr_name() - Get the reg property of a device, indexed by
  *                            name, as a memory-mapped I/O pointer
  * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
+ *	  'reg-names' property providing named-based identification. @name
  *	  indicates the value to search for in 'reg-names'.
  *
  * @dev: Pointer to a device
@@ -87,7 +87,7 @@ void *devfdt_map_physmem(const struct udevice *dev, unsigned long size);
  * @index: the 'reg' property can hold a list of <addr, size> pairs
  *	   and @index is used to select which one is required
  *
- * Return: addr
+ * Return: Address, or FDT_ADDR_T_NONE if there is no such property
  */
 fdt_addr_t devfdt_get_addr_index(const struct udevice *dev, int index);
 
@@ -114,7 +114,7 @@ void *devfdt_get_addr_index_ptr(const struct udevice *dev, int index);
  * @size: Pointer to size variable - this function returns the size
  *        specified in the 'reg' property here
  *
- * Return: addr
+ * Return: Address, or FDT_ADDR_T_NONE if there is no such property
  */
 fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
 				      fdt_size_t *size);
@@ -139,7 +139,7 @@ void *devfdt_get_addr_size_index_ptr(const struct udevice *dev, int index,
  *
  * @dev: Pointer to a device
  * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
+ *	  'reg-names' property providing named-based identification. @name
  *	  indicates the value to search for in 'reg-names'.
  *
  * Return: addr
@@ -154,7 +154,7 @@ fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name);
  *
  * @dev: Pointer to a device
  * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
+ *	  'reg-names' property providing named-based identification. @name
  *	  indicates the value to search for in 'reg-names'.
  * @size: Pointer to size variable - this function returns the size
  *        specified in the 'reg' property here
diff --git a/include/dm/read.h b/include/dm/read.h
index c2615f72f40..da7732a170f 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -277,7 +277,7 @@ void *dev_remap_addr_index(const struct udevice *dev, int index);
  *
  * @dev: Device to read from
  * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
+ *	  'reg-names' property providing named-based identification. @name
  *	  indicates the value to search for in 'reg-names'.
  *
  * Return: address or FDT_ADDR_T_NONE if not found
@@ -289,7 +289,7 @@ fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name);
  *
  * @dev: Device to read from
  * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
+ *	  'reg-names' property providing named-based identification. @name
  *	  indicates the value to search for in 'reg-names'.
  *  @size: place to put size value (on success)
  *
@@ -304,7 +304,7 @@ fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
  *
  * @dev: Device to read from
  * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
+ *	  'reg-names' property providing named-based identification. @name
  *	  indicates the value to search for in 'reg-names'.
  *
  * Return: pointer or NULL if not found
