spi: Add SPI_TX_DUAL mode

Added SPI_TX_DUAL mode flag.

Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>

diff --git a/include/spi.h b/include/spi.h
index 85866a27fcb7f65b3ef11cdea2a3e2e832ca3712..25470e4df2669fd9da49a8f696a4085f218931a1 100644 (file)
--- a/include/spi.h
+++ b/include/spi.h
@@ -24,7 +24,8 @@
 #define SPI_SLAVE      BIT(6)                  /* slave mode */
 #define SPI_PREAMBLE   BIT(7)                  /* Skip preamble bytes */
 #define SPI_TX_BYTE    BIT(8)                  /* transmit with 1 wire byte */
-#define SPI_TX_QUAD    BIT(9)                  /* transmit with 4 wires */
+#define SPI_TX_DUAL    BIT(9)                  /* transmit with 2 wires */
+#define SPI_TX_QUAD    BIT(10)                 /* transmit with 4 wires */
 
 /* SPI mode_rx flags */
 #define SPI_RX_SLOW    BIT(0)                  /* receive with 1 wire slow */