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drivers: spi_mcux_flexcomm: 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 17:05:39 +02:00 committed by Carles Cufí
parent 0ccdd5f263
commit ab2d23c5f4
1 changed files with 8 additions and 1 deletions
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9
drivers/spi/spi_mcux_flexcomm.c
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@ -213,7 +213,6 @@ static int spi_mcux_configure(const struct device *dev,
SPI_SetDummyData(base, 0);
data->ctx.config = spi_cfg;
spi_context_cs_configure(&data->ctx);
} else {
spi_slave_config_t slave_config;
@ -674,6 +673,7 @@ static int spi_mcux_release(const struct device *dev,
static int spi_mcux_init(const struct device *dev)
{
int err;
const struct spi_mcux_config *config = dev->config;
struct spi_mcux_data *data = dev->data;
@ -693,6 +693,12 @@ static int spi_mcux_init(const struct device *dev)
}
#endif /* CONFIG_SPI_MCUX_FLEXCOMM_DMA */
err = spi_context_cs_configure_all(&data->ctx);
if (err < 0) {
return err;
}
spi_context_unlock_unconditionally(&data->ctx);
return 0;
@ -762,6 +768,7 @@ static void spi_mcux_config_func_##id(const struct device *dev) \
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) \
SPI_DMA_CHANNELS(id) \
}; \
DEVICE_DT_INST_DEFINE(id, \