diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index 2215ff877bf7..f9d876deb1f0 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -583,6 +583,22 @@ static irqreturn_t sun6i_dma_interrupt(int irq, void *dev_id)
 	return ret;
 }
 
+static u32 find_burst_size(const u32 burst_lengths, u32 maxburst)
+{
+	if (!maxburst)
+		return 1;
+
+	if (BIT(maxburst) & burst_lengths)
+		return maxburst;
+
+	/* Hardware only does power-of-two bursts. */
+	for (u32 burst = rounddown_pow_of_two(maxburst); burst > 0; burst /= 2)
+		if (BIT(burst) & burst_lengths)
+			return burst;
+
+	return 1;
+}
+
 static int set_config(struct sun6i_dma_dev *sdev,
 			struct dma_slave_config *sconfig,
 			enum dma_transfer_direction direction,
@@ -616,15 +632,13 @@ static int set_config(struct sun6i_dma_dev *sdev,
 		return -EINVAL;
 	if (!(BIT(dst_addr_width) & sdev->slave.dst_addr_widths))
 		return -EINVAL;
-	if (!(BIT(src_maxburst) & sdev->cfg->src_burst_lengths))
-		return -EINVAL;
-	if (!(BIT(dst_maxburst) & sdev->cfg->dst_burst_lengths))
-		return -EINVAL;
 
 	src_width = convert_buswidth(src_addr_width);
 	dst_width = convert_buswidth(dst_addr_width);
-	dst_burst = convert_burst(dst_maxburst);
-	src_burst = convert_burst(src_maxburst);
+	src_burst = find_burst_size(sdev->cfg->src_burst_lengths, src_maxburst);
+	dst_burst = find_burst_size(sdev->cfg->dst_burst_lengths, dst_maxburst);
+	dst_burst = convert_burst(dst_burst);
+	src_burst = convert_burst(src_burst);
 
 	*p_cfg = DMA_CHAN_CFG_SRC_WIDTH(src_width) |
 		DMA_CHAN_CFG_DST_WIDTH(dst_width);