diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index 02fb967..84c0d76 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -467,6 +467,20 @@ static void davinci_spi_cleanup(struct spi_device *spi)
 		kfree(spicfg);
 }
 
+static inline bool __davinci_spi_can_dma(struct spi_device *spi)
+{
+	struct davinci_spi_config *spicfg = spi->controller_data;
+
+	return spicfg ? spicfg->io_type == SPI_IO_TYPE_DMA : false;
+}
+
+static bool davinci_spi_can_dma(struct spi_master *master,
+				struct spi_device *spi,
+				struct spi_transfer *xfer)
+{
+	return __davinci_spi_can_dma(spi);
+}
+
 static int davinci_spi_check_error(struct davinci_spi *dspi, int int_status)
 {
 	struct device *sdev = dspi->bitbang.master->dev.parent;
@@ -630,7 +644,6 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
 		};
 		struct dma_async_tx_descriptor *rxdesc;
 		struct dma_async_tx_descriptor *txdesc;
-		void *buf;
 
 		dummy_buf = kzalloc(t->len, GFP_KERNEL);
 		if (!dummy_buf)
@@ -639,42 +652,40 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
 		dmaengine_slave_config(dspi->dma_rx, &dma_rx_conf);
 		dmaengine_slave_config(dspi->dma_tx, &dma_tx_conf);
 
-		sg_init_table(&sg_rx, 1);
-		if (!t->rx_buf)
-			buf = dummy_buf;
-		else
-			buf = t->rx_buf;
-		t->rx_dma = dma_map_single(&spi->dev, buf,
-				t->len, DMA_FROM_DEVICE);
-		if (dma_mapping_error(&spi->dev, !t->rx_dma)) {
-			ret = -EFAULT;
-			goto err_rx_map;
+		if (!t->rx_buf) {
+			sg_init_table(&sg_rx, 1);
+			t->rx_dma = dma_map_single(&spi->dev, dummy_buf,
+					t->len, DMA_FROM_DEVICE);
+			if (dma_mapping_error(&spi->dev, !t->rx_dma)) {
+				ret = -EFAULT;
+				goto err_rx_map;
+			}
+			sg_dma_address(&sg_rx) = t->rx_dma;
+			sg_dma_len(&sg_rx) = t->len;
 		}
-		sg_dma_address(&sg_rx) = t->rx_dma;
-		sg_dma_len(&sg_rx) = t->len;
 
 		sg_init_table(&sg_tx, 1);
-		if (!t->tx_buf)
-			buf = dummy_buf;
-		else
-			buf = (void *)t->tx_buf;
-		t->tx_dma = dma_map_single(&spi->dev, buf,
-				t->len, DMA_TO_DEVICE);
-		if (dma_mapping_error(&spi->dev, t->tx_dma)) {
-			ret = -EFAULT;
-			goto err_tx_map;
+		if (!t->tx_buf) {
+			t->tx_dma = dma_map_single(&spi->dev, dummy_buf,
+					t->len, DMA_TO_DEVICE);
+			if (dma_mapping_error(&spi->dev, t->tx_dma)) {
+				ret = -EFAULT;
+				goto err_tx_map;
+			}
+			sg_dma_address(&sg_tx) = t->tx_dma;
+			sg_dma_len(&sg_tx) = t->len;
 		}
-		sg_dma_address(&sg_tx) = t->tx_dma;
-		sg_dma_len(&sg_tx) = t->len;
 
 		rxdesc = dmaengine_prep_slave_sg(dspi->dma_rx,
-				&sg_rx, 1, DMA_DEV_TO_MEM,
+				t->rx_sg.sgl ?: &sg_rx, t->rx_sg.nents ?: 1,
+				DMA_DEV_TO_MEM,
 				DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 		if (!rxdesc)
 			goto err_desc;
 
 		txdesc = dmaengine_prep_slave_sg(dspi->dma_tx,
-				&sg_tx, 1, DMA_MEM_TO_DEV,
+				t->tx_sg.sgl ?: &sg_tx, t->tx_sg.nents ?: 1,
+				DMA_MEM_TO_DEV,
 				DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 		if (!txdesc)
 			goto err_desc;
@@ -713,10 +724,12 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
 	if (spicfg->io_type == SPI_IO_TYPE_DMA) {
 		clear_io_bits(dspi->base + SPIINT, SPIINT_DMA_REQ_EN);
 
-		dma_unmap_single(&spi->dev, t->rx_dma,
-				t->len, DMA_FROM_DEVICE);
-		dma_unmap_single(&spi->dev, t->tx_dma,
-				t->len, DMA_TO_DEVICE);
+		if (!t->rx_buf)
+			dma_unmap_single(&spi->dev, t->rx_dma,
+					t->len, DMA_FROM_DEVICE);
+		if (!t->tx_buf)
+			dma_unmap_single(&spi->dev, t->tx_dma,
+					t->len, DMA_TO_DEVICE);
 		kfree(dummy_buf);
 	}
 
@@ -742,9 +755,11 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
 	return t->len;
 
 err_desc:
-	dma_unmap_single(&spi->dev, t->tx_dma, t->len, DMA_TO_DEVICE);
+	if (!t->tx_buf)
+		dma_unmap_single(&spi->dev, t->tx_dma, t->len, DMA_TO_DEVICE);
 err_tx_map:
-	dma_unmap_single(&spi->dev, t->rx_dma, t->len, DMA_FROM_DEVICE);
+	if (!t->rx_buf)
+		dma_unmap_single(&spi->dev, t->rx_dma, t->len, DMA_FROM_DEVICE);
 err_rx_map:
 	kfree(dummy_buf);
 err_alloc_dummy_buf:
@@ -990,6 +1005,7 @@ static int davinci_spi_probe(struct platform_device *pdev)
 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(2, 16);
 	master->setup = davinci_spi_setup;
 	master->cleanup = davinci_spi_cleanup;
+	master->can_dma = davinci_spi_can_dma;
 
 	dspi->bitbang.chipselect = davinci_spi_chipselect;
 	dspi->bitbang.setup_transfer = davinci_spi_setup_transfer;
