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/include/spi.h b/include/spi.h
index 6e8e0cc..b714886 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -80,7 +80,7 @@
* @mode: SPI mode to use for this device (see SPI mode flags)
*/
struct dm_spi_slave_plat {
- unsigned int cs;
+ unsigned int cs[SPI_CS_CNT_MAX];
uint max_hz;
uint mode;
};
@@ -166,6 +166,12 @@
#define SPI_XFER_ONCE (SPI_XFER_BEGIN | SPI_XFER_END)
#define SPI_XFER_U_PAGE BIT(4)
#define SPI_XFER_STACKED BIT(5)
+ /*
+ * Flag indicating that the spi-controller has multi chip select
+ * capability and can assert/de-assert more than one chip select
+ * at once.
+ */
+ bool multi_cs_cap;
};
/**