diff options
Diffstat (limited to 'include/spi.h')
| -rw-r--r-- | include/spi.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/include/spi.h b/include/spi.h index 9e9851284c8..3a92d02f215 100644 --- a/include/spi.h +++ b/include/spi.h @@ -38,6 +38,18 @@ #define SPI_DEFAULT_WORDLEN 8 +#define SPI_3BYTE_MODE 0x0 +#define SPI_4BYTE_MODE 0x1 + +/* SPI transfer flags */ +#define SPI_XFER_STRIPE (1 << 6) +#define SPI_XFER_MASK (3 << 8) +#define SPI_XFER_LOWER (1 << 8) +#define SPI_XFER_UPPER (2 << 8) + +/* Max no. of CS supported per spi device */ +#define SPI_CS_CNT_MAX 2 + /** * struct dm_spi_bus - SPI bus info * @@ -71,7 +83,7 @@ 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; }; @@ -155,6 +167,15 @@ struct spi_slave { #define SPI_XFER_BEGIN BIT(0) /* Assert CS before transfer */ #define SPI_XFER_END BIT(1) /* Deassert CS after transfer */ #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; + u32 bytemode; }; /** |