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drivers: spi_xec_qmspi: 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 17:09:21 +02:00 • committed by Carles Cufí
commit 258f2d85f7
1 changed files with 8 additions and 4 deletions
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12
drivers/spi/spi_xec_qmspi.c
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@ -221,9 +221,6 @@ static int qmspi_configure(const struct device *dev,
data->ctx.config = config;
/* Add driver specific data to SPI context structure */
spi_context_cs_configure(&data->ctx);
regs->MODE |= MCHP_QMSPI_M_ACTIVATE;
return 0;
@ -616,6 +613,7 @@ static int qmspi_release(const struct device *dev,
*/
static int qmspi_init(const struct device *dev)
{
int err;
const struct spi_qmspi_config *cfg = dev->config;
struct spi_qmspi_data *data = dev->data;
QMSPI_Type *regs = cfg->regs;
@ -630,6 +628,11 @@ static int qmspi_init(const struct device *dev)
MCHP_GIRQ_BLK_CLREN(cfg->girq);
NVIC_ClearPendingIRQ(cfg->girq_nvic_direct);
err = spi_context_cs_configure_all(&data->ctx);
if (err < 0) {
return err;
}
spi_context_unlock_unconditionally(&data->ctx);
return 0;
@ -671,7 +674,8 @@ static const struct spi_qmspi_config spi_qmspi_0_config = {
static struct spi_qmspi_data spi_qmspi_0_dev_data = {
SPI_CONTEXT_INIT_LOCK(spi_qmspi_0_dev_data, ctx),
SPI_CONTEXT_INIT_SYNC(spi_qmspi_0_dev_data, ctx)
SPI_CONTEXT_INIT_SYNC(spi_qmspi_0_dev_data, ctx),
SPI_CONTEXT_CS_GPIOS_INITIALIZE(DT_DRV_INST(0), ctx)
};
DEVICE_DT_INST_DEFINE(0,