drivers: spi_sam0: initialize all cs gpios during init
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>
diff --git a/drivers/spi/spi_sam0.c b/drivers/spi/spi_sam0.c
index ff0b35b..ea527a3 100644
--- a/drivers/spi/spi_sam0.c
+++ b/drivers/spi/spi_sam0.c
@@ -135,7 +135,6 @@
}
data->ctx.config = config;
- spi_context_cs_configure(&data->ctx);
return 0;
}
@@ -675,6 +674,7 @@
static int spi_sam0_init(const struct device *dev)
{
+ int err;
const struct spi_sam0_config *cfg = dev->config;
struct spi_sam0_data *data = dev->data;
SercomSpi *regs = cfg->regs;
@@ -706,6 +706,11 @@
data->dev = dev;
#endif
+ err = spi_context_cs_configure_all(&data->ctx);
+ if (err < 0) {
+ return err;
+ }
+
spi_context_unlock_unconditionally(&data->ctx);
/* The device will be configured and enabled when transceive
@@ -763,6 +768,7 @@
static struct spi_sam0_data spi_sam0_dev_data_##n = { \
SPI_CONTEXT_INIT_LOCK(spi_sam0_dev_data_##n, ctx), \
SPI_CONTEXT_INIT_SYNC(spi_sam0_dev_data_##n, ctx), \
+ SPI_CONTEXT_CS_GPIOS_INITIALIZE(DT_DRV_INST(n), ctx) \
}; \
DEVICE_DT_INST_DEFINE(n, &spi_sam0_init, NULL, \
&spi_sam0_dev_data_##n, \
