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spi: spi-uclass: Read chipselect and restrict capabilities

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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>
This commit is contained in:
Venkatesh Yadav Abbarapu
2024-09-26 10:25:05 +05:30
committed by Tom Rini
parent c480ec2c45
commit 34da258bb0
41 changed files with 177 additions and 151 deletions
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8
include/spi.h
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@@ -80,7 +80,7 @@ struct dm_spi_bus {
* @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 @@ struct spi_slave {
#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;
};
/**