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stm32f7:SDMMC remove widebus limitation on DMA

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There is no documantation for the STM32F7 that limits DMA on
   1 bit vrs 4 bit mode.
This commit is contained in:
David Sidrane 2017-08-17 09:48:46 -10:00
parent dffab2f4dd
commit 1e7ddfea8e
1 changed files with 0 additions and 7 deletions
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7
arch/arm/src/stm32f7/stm32_sdmmc.c
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@ -2802,13 +2802,6 @@ static int stm32_dmapreflight(FAR struct sdio_dev_s *dev,
DEBUGASSERT(priv != NULL && buffer != NULL && buflen > 0);
/* Wide bus operation is required for DMA */
if (!priv->widebus)
{
return -EINVAL;
}
/* DMA must be possible to the buffer */
if (!stm32_dmacapable((uintptr_t)buffer, (buflen + 3) >> 2,