1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index 4bc307745ef1..fcb9a916e6f6 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -61,6 +61,13 @@
  */
 #define NR_DESCS_PER_CHANNEL    64
 
+/* The set of bus widths supported by the DMA controller */
+#define DW_DMA_BUSWIDTHS                          \
+        BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED)       | \
+        BIT(DMA_SLAVE_BUSWIDTH_1_BYTE)          | \
+        BIT(DMA_SLAVE_BUSWIDTH_2_BYTES)         | \
+        BIT(DMA_SLAVE_BUSWIDTH_4_BYTES)
+
 /*----------------------------------------------------------------------*/
 
 static struct device *chan2dev(struct dma_chan *chan)
@@ -1660,8 +1667,8 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
         dw->dma.device_free_chan_resources = dwc_free_chan_resources;
 
         dw->dma.device_prep_dma_memcpy = dwc_prep_dma_memcpy;
-
         dw->dma.device_prep_slave_sg = dwc_prep_slave_sg;
+
         dw->dma.device_config = dwc_config;
         dw->dma.device_pause = dwc_pause;
         dw->dma.device_resume = dwc_resume;
@@ -1670,6 +1677,13 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
         dw->dma.device_tx_status = dwc_tx_status;
         dw->dma.device_issue_pending = dwc_issue_pending;
 
+        /* DMA capabilities */
+        dw->dma.src_addr_widths = DW_DMA_BUSWIDTHS;
+        dw->dma.dst_addr_widths = DW_DMA_BUSWIDTHS;
+        dw->dma.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) |
+                             BIT(DMA_MEM_TO_MEM);
+        dw->dma.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+
         err = dma_async_device_register(&dw->dma);
         if (err)
                 goto err_dma_register;