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Commit 76fe5e95 authored by Andrew Bresticker's avatar Andrew Bresticker Committed by Mark Brown
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spi: img-spfi: Increase DMA burst size 



A 1-byte burst size is rather inefficient and has been shown to cause
TX issues during testing.  Increase the DMA burst size to 4-bytes for
both RX and TX DMA when using the 8-bit FIFO.

Signed-off-by: default avatarAndrew Bresticker <abrestic@chromium.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c0e7dc21

drivers/spi/spi-img-spfi.c

+2 −2
Original line number Diff line number Diff line
@@ -341,7 +341,7 @@ static int img_spfi_start_dma(struct spi_master *master, 
		default:

			rxconf.src_addr = spfi->phys + SPFI_RX_8BIT_VALID_DATA;

			rxconf.src_addr_width = 1;

			rxconf.src_maxburst = 1;

			rxconf.src_maxburst = 4;

		}

		dmaengine_slave_config(spfi->rx_ch, &rxconf);
@@ -368,7 +368,7 @@ static int img_spfi_start_dma(struct spi_master *master, 
		default:

			txconf.dst_addr = spfi->phys + SPFI_TX_8BIT_VALID_DATA;

			txconf.dst_addr_width = 1;

			txconf.dst_maxburst = 1;

			txconf.dst_maxburst = 4;

			break;

		}

		dmaengine_slave_config(spfi->tx_ch, &txconf);