spi: spi-uclass: Read chipselect and restrict capabilities
Read chipselect properties from DT which are populated using 'reg'
property and save it in plat->cs[] array for later use.
Also read multi chipselect capability which is used for
parallel-memories and return errors if they are passed on using DT but
driver is not capable of handling it.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
diff --git a/drivers/spi/fsl_dspi.c b/drivers/spi/fsl_dspi.c
index 1d4d90c..f2393c0 100644
--- a/drivers/spi/fsl_dspi.c
+++ b/drivers/spi/fsl_dspi.c
@@ -452,9 +452,9 @@
unsigned char pcssck = 0, cssck = 0;
unsigned char pasc = 0, asc = 0;
- if (slave_plat->cs >= priv->num_chipselect) {
+ if (slave_plat->cs[0] >= priv->num_chipselect) {
debug("DSPI invalid chipselect number %d(max %d)!\n",
- slave_plat->cs, priv->num_chipselect - 1);
+ slave_plat->cs[0], priv->num_chipselect - 1);
return -EINVAL;
}
@@ -469,12 +469,12 @@
/* Set After SCK delay scale values */
ns_delay_scale(&pasc, &asc, sck_cs_delay, priv->bus_clk);
- priv->ctar_val[slave_plat->cs] = DSPI_CTAR_DEFAULT_VALUE |
+ priv->ctar_val[slave_plat->cs[0]] = DSPI_CTAR_DEFAULT_VALUE |
DSPI_CTAR_PCSSCK(pcssck) |
DSPI_CTAR_PASC(pasc);
debug("DSPI pre_probe slave device on CS %u, max_hz %u, mode 0x%x.\n",
- slave_plat->cs, slave_plat->max_hz, slave_plat->mode);
+ slave_plat->cs[0], slave_plat->max_hz, slave_plat->mode);
return 0;
}
@@ -527,13 +527,13 @@
priv = dev_get_priv(bus);
/* processor special preparation work */
- cpu_dspi_claim_bus(dev_seq(bus), slave_plat->cs);
+ cpu_dspi_claim_bus(dev_seq(bus), slave_plat->cs[0]);
/* configure transfer mode */
- fsl_dspi_cfg_ctar_mode(priv, slave_plat->cs, priv->mode);
+ fsl_dspi_cfg_ctar_mode(priv, slave_plat->cs[0], priv->mode);
/* configure active state of CSX */
- fsl_dspi_cfg_cs_active_state(priv, slave_plat->cs,
+ fsl_dspi_cfg_cs_active_state(priv, slave_plat->cs[0],
priv->mode);
fsl_dspi_clr_fifo(priv);
@@ -559,7 +559,7 @@
dspi_halt(priv, 1);
/* processor special release work */
- cpu_dspi_release_bus(dev_seq(bus), slave_plat->cs);
+ cpu_dspi_release_bus(dev_seq(bus), slave_plat->cs[0]);
return 0;
}
@@ -615,7 +615,7 @@
bus = dev->parent;
priv = dev_get_priv(bus);
- return dspi_xfer(priv, slave_plat->cs, bitlen, dout, din, flags);
+ return dspi_xfer(priv, slave_plat->cs[0], bitlen, dout, din, flags);
}
static int fsl_dspi_set_speed(struct udevice *bus, uint speed)