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drivers: spi_mcux_dspi: initialize all cs gpios during init

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In case when we have multiple devices connected to the
one SPI interface the initial state of CS gpios after
MCU reset is floating and it might be low that prevents us from
communicating between particular devices. Fix that by
initializing all provided cs gpios and setting them as inactive.

Signed-off-by: Bartosz Bilas <bartosz.bilas@hotmail.com>
This commit is contained in:
Bartosz Bilas 2021-10-07 17:05:18 +02:00 • committed by Carles Cufí
commit 0ccdd5f263
1 changed files with 8 additions and 1 deletions
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9
drivers/spi/spi_mcux_dspi.c
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@ -654,7 +654,6 @@ static int spi_mcux_configure(const struct device *dev,
#endif
data->ctx.config = spi_cfg;
spi_context_cs_configure(&data->ctx);
return 0;
}
@ -746,6 +745,7 @@ static int spi_mcux_release(const struct device *dev,
static int spi_mcux_init(const struct device *dev)
{
int err;
struct spi_mcux_data *data = dev->data;
#ifdef CONFIG_DSPI_MCUX_EDMA
enum dma_channel_filter spi_filter = DMA_CHANNEL_NORMAL;
@ -763,6 +763,12 @@ static int spi_mcux_init(const struct device *dev)
config->irq_config_func(dev);
#endif
data->dev = dev;
err = spi_context_cs_configure_all(&data->ctx);
if (err < 0) {
return err;
}
spi_context_unlock_unconditionally(&data->ctx);
return 0;
@ -856,6 +862,7 @@ static const struct spi_driver_api spi_mcux_driver_api = {
static struct spi_mcux_data spi_mcux_data_##id = { \
SPI_CONTEXT_INIT_LOCK(spi_mcux_data_##id, ctx), \
SPI_CONTEXT_INIT_SYNC(spi_mcux_data_##id, ctx), \
SPI_CONTEXT_CS_GPIOS_INITIALIZE(DT_DRV_INST(id), ctx) \
TX_DMA_CONFIG(id) RX_DMA_CONFIG(id) \
}; \
static const struct spi_mcux_config spi_mcux_config_##id = { \