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drivers: spi: stm32 spi with dma must enable cs after periph

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When using DMA to transfer over the spi, the spi_stm32_cs_control
is done after enabling the SPI. The same sequence applies
in the transceive_dma function as in transceive function

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2022-03-10 10:21:22 +01:00 • committed by Carles Cufí
commit 61bef2087f
1 changed files with 3 additions and 3 deletions
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6
drivers/spi/spi_ll_stm32.c
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@ -724,9 +724,6 @@ static int transceive_dma(const struct device *dev,
/* Set buffers info */
spi_context_buffers_setup(&data->ctx, tx_bufs, rx_bufs, 1);
/* This is turned off in spi_stm32_complete(). */
spi_stm32_cs_control(dev, true);
#if defined(CONFIG_SOC_SERIES_STM32H7X)
/* set request before enabling (else SPI CFG1 reg is write protected) */
LL_SPI_EnableDMAReq_RX(spi);
@ -740,6 +737,9 @@ static int transceive_dma(const struct device *dev,
LL_SPI_Enable(spi);
#endif /* CONFIG_SOC_SERIES_STM32H7X */
/* This is turned off in spi_stm32_complete(). */
spi_stm32_cs_control(dev, true);
while (data->ctx.rx_len > 0 || data->ctx.tx_len > 0) {
size_t dma_len;