linux-kernel - [PATCH 2/7] spi: add flags for octal I/O data transfer

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Date:   Fri, 31 Aug 2018 15:59:59 +0530
From:   Yogesh Gaur <yogeshnarayan.gaur@....com>
To:     linux-mtd@...ts.infradead.org, boris.brezillon@...tlin.com,
        marek.vasut@...il.com, linux-spi@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     robh@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        linux-arm-kernel@...ts.infradead.org, computersforpeace@...il.com,
        frieder.schrempf@...eet.de, linux-kernel@...r.kernel.org,
        Yogesh Gaur <yogeshnarayan.gaur@....com>
Subject: [PATCH 2/7] spi: add flags for octal I/O data transfer

Add flags for Octal I/O data transfer
Required for the SPI controller which can do data transfer (TX/RX)
on 8 data lines e.g. NXP FlexSPI controller.
 SPI_TX_OCTAL: transmit with 8 wires
 SPI_RX_OCTAL: receive with 8 wires

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

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 558aeed..180f277 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -164,6 +164,8 @@ 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;
-- 
2.7.4