diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index d2c5cc7c583c48d49d27a13f3e859c2926aed0cb..3d1c2aa515308e9484365a3bb2f1712f9adeccbb 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -299,6 +299,7 @@ enum dma_slave_buswidth {
 	DMA_SLAVE_BUSWIDTH_UNDEFINED = 0,
 	DMA_SLAVE_BUSWIDTH_1_BYTE = 1,
 	DMA_SLAVE_BUSWIDTH_2_BYTES = 2,
+	DMA_SLAVE_BUSWIDTH_3_BYTES = 3,
 	DMA_SLAVE_BUSWIDTH_4_BYTES = 4,
 	DMA_SLAVE_BUSWIDTH_8_BYTES = 8,
 };