diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 7b5583a4c45516..b6fe198b5422f3 100644
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -48,6 +48,12 @@
 #define BCM2835_DMA_CHAN_NAME_SIZE 8
 #define BCM2835_DMA_BULK_MASK  BIT(0)
 
+/**
+ * struct bcm2835_dmadev - BCM2835 DMA controller
+ * @ddev: DMA device
+ * @base: base address of register map
+ * @dma_parms: DMA parameters (to convey 1 GByte max segment size to clients)
+ */
 struct bcm2835_dmadev {
 	struct dma_device ddev;
 	void __iomem *base;