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| author | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2014-01-12 21:40:11 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2014-01-12 21:40:11 +0530 |
| commit | f77f469117ab3184ac45683a50dc446265be28cc (patch) | |
| tree | 3f5f0783521f5401251cc4a94503573dc2e91baf /include/spi.h | |
| parent | ab92224f4550f9677be32dd903e99acf1475dbf7 (diff) | |
| download | u-boot-imx-f77f469117ab3184ac45683a50dc446265be28cc.zip u-boot-imx-f77f469117ab3184ac45683a50dc446265be28cc.tar.gz u-boot-imx-f77f469117ab3184ac45683a50dc446265be28cc.tar.bz2 | |
sf: Add dual memories support - DUAL_STACKED
This patch added support for accessing dual memories in
stacked connection with single chipselect line from controller.
For more info - see doc/SPI/README.dual-flash
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Diffstat (limited to 'include/spi.h')
| -rw-r--r-- | include/spi.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/spi.h b/include/spi.h index c8a9d87..d214d82 100644 --- a/include/spi.h +++ b/include/spi.h @@ -30,6 +30,7 @@ #define SPI_XFER_MMAP 0x08 /* Memory Mapped start */ #define SPI_XFER_MMAP_END 0x10 /* Memory Mapped End */ #define SPI_XFER_ONCE (SPI_XFER_BEGIN | SPI_XFER_END) +#define SPI_XFER_U_PAGE (1 << 5) /* SPI TX operation modes */ #define SPI_OPM_TX_QPP 1 << 0 @@ -44,6 +45,9 @@ SPI_OPM_RX_DIO | SPI_OPM_RX_QOF | \ SPI_OPM_RX_QIOF +/* SPI bus connection options */ +#define SPI_CONN_DUAL_SHARED 1 << 0 + /* Header byte that marks the start of the message */ #define SPI_PREAMBLE_END_BYTE 0xec @@ -62,6 +66,8 @@ * @max_write_size: If non-zero, the maximum number of bytes which can * be written at once, excluding command bytes. * @memory_map: Address of read-only SPI flash access. + * @option: Varies SPI bus options - separate bus. + * @flags: Indication of SPI flags. */ struct spi_slave { unsigned int bus; @@ -71,6 +77,8 @@ struct spi_slave { unsigned int wordlen; unsigned int max_write_size; void *memory_map; + u8 option; + u8 flags; }; /** |