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authorAndrew Bresticker <abrestic@chromium.org>2014-12-22 22:35:15 +0300
committerMark Brown <broonie@kernel.org>2014-12-24 15:20:03 +0300
commit76fe5e95fac3c93bdff9102480e5ba823ba656c3 (patch)
tree7d6ef466527abcf12936e2b1a461cadf8ab3c139 /drivers/spi
parentc0e7dc21d33caa31296d1e4af1e99008359f1b64 (diff)
downloadlinux-76fe5e95fac3c93bdff9102480e5ba823ba656c3.tar.xz
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: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-img-spfi.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
index cd14556852bf..aad6683db81b 100644
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -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);