[RFC,2/4] spi: add flags for octal I/O data transfer

Message ID 1522836371-2828-3-git-send-email-yogeshnarayan.gaur@nxp.com
State Changes Requested
Delegated to: Cyrille Pitchen
Headers show
Series
  • mtd: spi-nor: Add NXP FlexSPI driver
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Commit Message

Yogesh Gaur April 4, 2018, 10:06 a.m.
Add flags for Octal I/O data transfer
Required for flashes like mt35xu512aba, which are working on 8 wires.
 SPI_TX_OCTAL: transmit with 8 wires
 SPI_RX_OCTAL: receive with 8 wires

Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
---
 include/linux/spi/spi.h | 2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index bc6bb32..2757a9b 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -163,6 +163,8 @@  struct spi_device {
 #define	SPI_TX_QUAD	0x200			/* transmit with 4 wires */
 #define	SPI_RX_DUAL	0x400			/* receive with 2 wires */
 #define	SPI_RX_QUAD	0x800			/* receive with 4 wires */
+#define	SPI_TX_OCTAL	0x1000			/* transmit with 8 wires */
+#define	SPI_RX_OCTAL	0x2000			/* receive with 8 wires */
 	int			irq;
 	void			*controller_state;
 	void			*controller_data;