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spi: img-spfi: Enable controller before starting TX DMA

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It is recommended that the SPFI controller be enabled (i.e. setting
SPFI_EN in SPFI_CONTROL) before TX DMA begins.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andrew Bresticker
2014-12-16 13:05:44 -08:00
committed by Mark Brown
parent 97bf6af1f9
commit c0e7dc21d3
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-img-spfi.c
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@@ -390,14 +390,14 @@ static int img_spfi_start_dma(struct spi_master *master,
dma_async_issue_pending(spfi->rx_ch); dma_async_issue_pending(spfi->rx_ch);
} }
spfi_start(spfi);
if (xfer->tx_buf) { if (xfer->tx_buf) {
spfi->tx_dma_busy = true; spfi->tx_dma_busy = true;
dmaengine_submit(txdesc); dmaengine_submit(txdesc);
dma_async_issue_pending(spfi->tx_ch); dma_async_issue_pending(spfi->tx_ch);
} }
spfi_start(spfi);
return 1; return 1;
stop_dma: stop_dma: