diff --git a/drivers/dma/owl-dma.c b/drivers/dma/owl-dma.c
index 331c8d8b10a3..9fede32641e9 100644
--- a/drivers/dma/owl-dma.c
+++ b/drivers/dma/owl-dma.c
@@ -124,7 +124,7 @@
 #define FCNT_VAL				0x1
 
 /**
- * owl_dmadesc_offsets - Describe DMA descriptor, hardware link
+ * enum owl_dmadesc_offsets - Describe DMA descriptor, hardware link
  * list for dma transfer
  * @OWL_DMADESC_NEXT_LLI: physical address of the next link list
  * @OWL_DMADESC_SADDR: source physical address
@@ -135,6 +135,7 @@
  * @OWL_DMADESC_CTRLA: dma_mode and linklist ctrl config
  * @OWL_DMADESC_CTRLB: interrupt config
  * @OWL_DMADESC_CONST_NUM: data for constant fill
+ * @OWL_DMADESC_SIZE: max size of this enum
  */
 enum owl_dmadesc_offsets {
 	OWL_DMADESC_NEXT_LLI = 0,