ASoC: rockchip: i2s: Improve dma data transfer efficiency

This patch changes dma data burst from 4 to 8 to improve
data transfer efficiency.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1629950520-14190-3-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 05fce2c..2e0047d 100644 (file)
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -644,11 +644,11 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 
        i2s->playback_dma_data.addr = res->start + I2S_TXDR;
        i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-       i2s->playback_dma_data.maxburst = 4;
+       i2s->playback_dma_data.maxburst = 8;
 
        i2s->capture_dma_data.addr = res->start + I2S_RXDR;
        i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-       i2s->capture_dma_data.maxburst = 4;
+       i2s->capture_dma_data.maxburst = 8;
 
        i2s->bclk_ratio = 64;