| Message ID | 1538642920-3843-2-git-send-email-yogeshnarayan.gaur@nxp.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | spi: add support for octal mode data transfer | expand |
Hi Yogesh, On Thu, 4 Oct 2018 14:18:37 +0530 Yogesh Gaur <yogeshnarayan.gaur@nxp.com> wrote: > Add flags for Octal I/O data transfer > Required for the SPI controller which can do the 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@nxp.com> > --- > drivers/spi/spi.c | 6 ++++++ > include/linux/spi/spi.h | 2 ++ > 2 files changed, 8 insertions(+) > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c > index ec395a6..80f672f 100644 > --- a/drivers/spi/spi.c > +++ b/drivers/spi/spi.c > @@ -1573,6 +1573,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, > case 4: > spi->mode |= SPI_TX_QUAD; > break; > + case 8: > + spi->mode |= SPI_TX_OCTAL; > + break; > default: > dev_warn(&ctlr->dev, > "spi-tx-bus-width %d not supported\n", > @@ -1591,6 +1594,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, > case 4: > spi->mode |= SPI_RX_QUAD; > break; > + case 8: > + spi->mode |= SPI_RX_OCTAL; > + break; > default: > dev_warn(&ctlr->dev, > "spi-rx-bus-width %d not supported\n", > diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h > index a64235e..2d21307 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; You're still not updating spi-mem.c to check those flags and SPI_MEM_MAX_BUSWIDTH is not updated to match the new limit (8 instead of 4). Regards, Boris
Hi Boris, > -----Original Message----- > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > Sent: Thursday, October 4, 2018 2:35 PM > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; vigneshr@ti.com; > linux-spi@vger.kernel.org; devicetree@vger.kernel.org; robh@kernel.org; > mark.rutland@arm.com; shawnguo@kernel.org; linux-arm- > kernel@lists.infradead.org; computersforpeace@gmail.com; > frieder.schrempf@exceet.de; linux-kernel@vger.kernel.org > Subject: Re: [PATCH 1/4] spi: add support for octal I/O data transfer > > Hi Yogesh, > > On Thu, 4 Oct 2018 14:18:37 +0530 > Yogesh Gaur <yogeshnarayan.gaur@nxp.com> wrote: > > > Add flags for Octal I/O data transfer > > Required for the SPI controller which can do the 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@nxp.com> > > --- > > drivers/spi/spi.c | 6 ++++++ > > include/linux/spi/spi.h | 2 ++ > > 2 files changed, 8 insertions(+) > > > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index > > ec395a6..80f672f 100644 > > --- a/drivers/spi/spi.c > > +++ b/drivers/spi/spi.c > > @@ -1573,6 +1573,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, > struct spi_device *spi, > > case 4: > > spi->mode |= SPI_TX_QUAD; > > break; > > + case 8: > > + spi->mode |= SPI_TX_OCTAL; > > + break; > > default: > > dev_warn(&ctlr->dev, > > "spi-tx-bus-width %d not supported\n", @@ - > 1591,6 +1594,9 @@ > > static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, > > case 4: > > spi->mode |= SPI_RX_QUAD; > > break; > > + case 8: > > + spi->mode |= SPI_RX_OCTAL; > > + break; > > default: > > dev_warn(&ctlr->dev, > > "spi-rx-bus-width %d not supported\n", diff -- > git > > a/include/linux/spi/spi.h b/include/linux/spi/spi.h index > > a64235e..2d21307 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; > > You're still not updating spi-mem.c to check those flags and > SPI_MEM_MAX_BUSWIDTH is not updated to match the new limit (8 instead of > 4). > Yes and its strange that my octal mode communication is working fine without adding support in spi-mem.c and that's why this has been missed from me. For this patch series, have done data read/write verification using MTD_DEBUG and JFFS2 mount utility and none of them reports data read error. Would add octal mode related changes in this file too. -- Regards Yogesh Gaur. > Regards, > > Boris
On Thu, 4 Oct 2018 09:14:36 +0000 Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> wrote: > Hi Boris, > > > -----Original Message----- > > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > > Sent: Thursday, October 4, 2018 2:35 PM > > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; > > vigneshr@ti.com; linux-spi@vger.kernel.org; > > devicetree@vger.kernel.org; robh@kernel.org; mark.rutland@arm.com; > > shawnguo@kernel.org; linux-arm- kernel@lists.infradead.org; > > computersforpeace@gmail.com; frieder.schrempf@exceet.de; > > linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/4] spi: add > > support for octal I/O data transfer > > > > Hi Yogesh, > > > > On Thu, 4 Oct 2018 14:18:37 +0530 > > Yogesh Gaur <yogeshnarayan.gaur@nxp.com> wrote: > > > > > Add flags for Octal I/O data transfer > > > Required for the SPI controller which can do the 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@nxp.com> > > > --- > > > drivers/spi/spi.c | 6 ++++++ > > > include/linux/spi/spi.h | 2 ++ > > > 2 files changed, 8 insertions(+) > > > > > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index > > > ec395a6..80f672f 100644 > > > --- a/drivers/spi/spi.c > > > +++ b/drivers/spi/spi.c > > > @@ -1573,6 +1573,9 @@ static int of_spi_parse_dt(struct > > > spi_controller *ctlr, > > struct spi_device *spi, > > > case 4: > > > spi->mode |= SPI_TX_QUAD; > > > break; > > > + case 8: > > > + spi->mode |= SPI_TX_OCTAL; > > > + break; > > > default: > > > dev_warn(&ctlr->dev, > > > "spi-tx-bus-width %d not > > > supported\n", @@ - > > 1591,6 +1594,9 @@ > > > static int of_spi_parse_dt(struct spi_controller *ctlr, struct > > > spi_device *spi, case 4: > > > spi->mode |= SPI_RX_QUAD; > > > break; > > > + case 8: > > > + spi->mode |= SPI_RX_OCTAL; > > > + break; > > > default: > > > dev_warn(&ctlr->dev, > > > "spi-rx-bus-width %d not > > > supported\n", diff -- > > git > > > a/include/linux/spi/spi.h b/include/linux/spi/spi.h index > > > a64235e..2d21307 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; > > > > You're still not updating spi-mem.c to check those flags and > > SPI_MEM_MAX_BUSWIDTH is not updated to match the new limit (8 > > instead of 4). > > > Yes and its strange that my octal mode communication is working fine > without adding support in spi-mem.c and that's why this has been > missed from me. Are you based on top of spi-next?
Hi Boris, > -----Original Message----- > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > Sent: Thursday, October 4, 2018 2:50 PM > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; vigneshr@ti.com; > linux-spi@vger.kernel.org; devicetree@vger.kernel.org; robh@kernel.org; > mark.rutland@arm.com; shawnguo@kernel.org; linux-arm- > kernel@lists.infradead.org; computersforpeace@gmail.com; > frieder.schrempf@exceet.de; linux-kernel@vger.kernel.org > Subject: Re: [PATCH 1/4] spi: add support for octal I/O data transfer > > On Thu, 4 Oct 2018 09:14:36 +0000 > Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> wrote: > > > Hi Boris, > > > > > -----Original Message----- > > > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > > > Sent: Thursday, October 4, 2018 2:35 PM > > > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; > > > vigneshr@ti.com; linux-spi@vger.kernel.org; > > > devicetree@vger.kernel.org; robh@kernel.org; mark.rutland@arm.com; > > > shawnguo@kernel.org; linux-arm- kernel@lists.infradead.org; > > > computersforpeace@gmail.com; frieder.schrempf@exceet.de; > > > linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/4] spi: add > > > support for octal I/O data transfer > > > > > > Hi Yogesh, > > > > > > On Thu, 4 Oct 2018 14:18:37 +0530 > > > Yogesh Gaur <yogeshnarayan.gaur@nxp.com> wrote: > > > > > > > Add flags for Octal I/O data transfer Required for the SPI > > > > controller which can do the 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@nxp.com> > > > > --- > > > > drivers/spi/spi.c | 6 ++++++ > > > > include/linux/spi/spi.h | 2 ++ > > > > 2 files changed, 8 insertions(+) > > > > > > > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index > > > > ec395a6..80f672f 100644 > > > > --- a/drivers/spi/spi.c > > > > +++ b/drivers/spi/spi.c > > > > @@ -1573,6 +1573,9 @@ static int of_spi_parse_dt(struct > > > > spi_controller *ctlr, > > > struct spi_device *spi, > > > > case 4: > > > > spi->mode |= SPI_TX_QUAD; > > > > break; > > > > + case 8: > > > > + spi->mode |= SPI_TX_OCTAL; > > > > + break; > > > > default: > > > > dev_warn(&ctlr->dev, > > > > "spi-tx-bus-width %d not > > > > supported\n", @@ - > > > 1591,6 +1594,9 @@ > > > > static int of_spi_parse_dt(struct spi_controller *ctlr, struct > > > > spi_device *spi, case 4: > > > > spi->mode |= SPI_RX_QUAD; > > > > break; > > > > + case 8: > > > > + spi->mode |= SPI_RX_OCTAL; > > > > + break; > > > > default: > > > > dev_warn(&ctlr->dev, > > > > "spi-rx-bus-width %d not > > > > supported\n", diff -- > > > git > > > > a/include/linux/spi/spi.h b/include/linux/spi/spi.h index > > > > a64235e..2d21307 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; > > > > > > You're still not updating spi-mem.c to check those flags and > > > SPI_MEM_MAX_BUSWIDTH is not updated to match the new limit (8 > > > instead of 4). > > > > > Yes and its strange that my octal mode communication is working fine > > without adding support in spi-mem.c and that's why this has been > > missed from me. > > Are you based on top of spi-next? Ok, that might be the reason. I have rebased few days back. Would rebase with current tip and add support in spi-mem interface too.
Hi Boris, > -----Original Message----- > From: Yogesh Narayan Gaur > Sent: Thursday, October 4, 2018 2:56 PM > To: 'Boris Brezillon' <boris.brezillon@bootlin.com> > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; vigneshr@ti.com; > linux-spi@vger.kernel.org; devicetree@vger.kernel.org; robh@kernel.org; > mark.rutland@arm.com; shawnguo@kernel.org; linux-arm- > kernel@lists.infradead.org; computersforpeace@gmail.com; > frieder.schrempf@exceet.de; linux-kernel@vger.kernel.org > Subject: RE: [PATCH 1/4] spi: add support for octal I/O data transfer > > Hi Boris, > > > -----Original Message----- > > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > > Sent: Thursday, October 4, 2018 2:50 PM > > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; > > vigneshr@ti.com; linux-spi@vger.kernel.org; > > devicetree@vger.kernel.org; robh@kernel.org; mark.rutland@arm.com; > > shawnguo@kernel.org; linux-arm- kernel@lists.infradead.org; > > computersforpeace@gmail.com; frieder.schrempf@exceet.de; > > linux-kernel@vger.kernel.org > > Subject: Re: [PATCH 1/4] spi: add support for octal I/O data transfer > > > > On Thu, 4 Oct 2018 09:14:36 +0000 > > Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> wrote: > > > > > Hi Boris, > > > > > > > -----Original Message----- > > > > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > > > > Sent: Thursday, October 4, 2018 2:35 PM > > > > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > > > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; > > > > vigneshr@ti.com; linux-spi@vger.kernel.org; > > > > devicetree@vger.kernel.org; robh@kernel.org; mark.rutland@arm.com; > > > > shawnguo@kernel.org; linux-arm- kernel@lists.infradead.org; > > > > computersforpeace@gmail.com; frieder.schrempf@exceet.de; > > > > linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/4] spi: add > > > > support for octal I/O data transfer > > > > > > > > Hi Yogesh, > > > > [...] > > > > > +#define SPI_RX_OCTAL > > > > > 0x2000 /* receive with 8 wires > > > > */ > > > > > int irq; > > > > > void *controller_state; > > > > > void *controller_data; > > > > > > > > You're still not updating spi-mem.c to check those flags and > > > > SPI_MEM_MAX_BUSWIDTH is not updated to match the new limit (8 > > > > instead of 4). > > > > > > > Yes and its strange that my octal mode communication is working fine > > > without adding support in spi-mem.c and that's why this has been > > > missed from me. > > > > Are you based on top of spi-next? > > Ok, that might be the reason. I have rebased few days back. > Would rebase with current tip and add support in spi-mem interface too. I have rebased spi-next and currently on top but still my octal command support is working fine without any issue with current shared patch series, performed data sanity. => git log --pretty=oneline -3 496c415717b8bb7d37181127fcfad0ba450eb10d mtd: spi-nor: fsl-quadspi: Don't let -EINVAL on the bus 2336d3a7b125683c9e8b25d6efa6064310d19dbe mtd: devices: m25p80: Make sure WRITE_EN is issued before each write e55841874471282d32eec595997afce43a5f55c0 mtd: spi-nor: Support controllers with limited TX FIFO size GIT Repo - git://git.infradead.org/linux-mtd.git Branch - remotes/origin/spi-nor/next Also, I am not able to find string SPI_MEM_MAX_BUSWIDTH in current source code, can you share the GIT details where these changes are pushed. -- Regards Yogesh Gaur.
On Thu, 4 Oct 2018 12:07:17 +0000 Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> wrote: > Hi Boris, > > > -----Original Message----- > > From: Yogesh Narayan Gaur > > Sent: Thursday, October 4, 2018 2:56 PM > > To: 'Boris Brezillon' <boris.brezillon@bootlin.com> > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; vigneshr@ti.com; > > linux-spi@vger.kernel.org; devicetree@vger.kernel.org; robh@kernel.org; > > mark.rutland@arm.com; shawnguo@kernel.org; linux-arm- > > kernel@lists.infradead.org; computersforpeace@gmail.com; > > frieder.schrempf@exceet.de; linux-kernel@vger.kernel.org > > Subject: RE: [PATCH 1/4] spi: add support for octal I/O data transfer > > > > Hi Boris, > > > > > -----Original Message----- > > > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > > > Sent: Thursday, October 4, 2018 2:50 PM > > > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; > > > vigneshr@ti.com; linux-spi@vger.kernel.org; > > > devicetree@vger.kernel.org; robh@kernel.org; mark.rutland@arm.com; > > > shawnguo@kernel.org; linux-arm- kernel@lists.infradead.org; > > > computersforpeace@gmail.com; frieder.schrempf@exceet.de; > > > linux-kernel@vger.kernel.org > > > Subject: Re: [PATCH 1/4] spi: add support for octal I/O data transfer > > > > > > On Thu, 4 Oct 2018 09:14:36 +0000 > > > Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> wrote: > > > > > > > Hi Boris, > > > > > > > > > -----Original Message----- > > > > > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com] > > > > > Sent: Thursday, October 4, 2018 2:35 PM > > > > > To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> > > > > > Cc: linux-mtd@lists.infradead.org; marek.vasut@gmail.com; > > > > > vigneshr@ti.com; linux-spi@vger.kernel.org; > > > > > devicetree@vger.kernel.org; robh@kernel.org; mark.rutland@arm.com; > > > > > shawnguo@kernel.org; linux-arm- kernel@lists.infradead.org; > > > > > computersforpeace@gmail.com; frieder.schrempf@exceet.de; > > > > > linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/4] spi: add > > > > > support for octal I/O data transfer > > > > > > > > > > Hi Yogesh, > > > > > > [...] > > > > > > +#define SPI_RX_OCTAL > > > > > > 0x2000 /* receive with 8 wires > > > > > */ > > > > > > int irq; > > > > > > void *controller_state; > > > > > > void *controller_data; > > > > > > > > > > You're still not updating spi-mem.c to check those flags and > > > > > SPI_MEM_MAX_BUSWIDTH is not updated to match the new limit (8 > > > > > instead of 4). > > > > > > > > > Yes and its strange that my octal mode communication is working fine > > > > without adding support in spi-mem.c and that's why this has been > > > > missed from me. > > > > > > Are you based on top of spi-next? > > > > Ok, that might be the reason. I have rebased few days back. > > Would rebase with current tip and add support in spi-mem interface too. > > I have rebased spi-next and currently on top but still my octal command support is working fine without any issue with current shared patch series, performed data sanity. > > => git log --pretty=oneline -3 > 496c415717b8bb7d37181127fcfad0ba450eb10d mtd: spi-nor: fsl-quadspi: Don't let -EINVAL on the bus > 2336d3a7b125683c9e8b25d6efa6064310d19dbe mtd: devices: m25p80: Make sure WRITE_EN is issued before each write > e55841874471282d32eec595997afce43a5f55c0 mtd: spi-nor: Support controllers with limited TX FIFO size > > GIT Repo - git://git.infradead.org/linux-mtd.git > Branch - remotes/origin/spi-nor/next > > Also, I am not able to find string SPI_MEM_MAX_BUSWIDTH in current source code, can you share the GIT details where these changes are pushed. It's in Mark's tree [1] (spi-next != spi-nor/next). [1]https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/log/?h=for-next
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index ec395a6..80f672f 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1573,6 +1573,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, case 4: spi->mode |= SPI_TX_QUAD; break; + case 8: + spi->mode |= SPI_TX_OCTAL; + break; default: dev_warn(&ctlr->dev, "spi-tx-bus-width %d not supported\n", @@ -1591,6 +1594,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, case 4: spi->mode |= SPI_RX_QUAD; break; + case 8: + spi->mode |= SPI_RX_OCTAL; + break; default: dev_warn(&ctlr->dev, "spi-rx-bus-width %d not supported\n", diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index a64235e..2d21307 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;
Add flags for Octal I/O data transfer Required for the SPI controller which can do the 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@nxp.com> --- drivers/spi/spi.c | 6 ++++++ include/linux/spi/spi.h | 2 ++ 2 files changed, 8 insertions(+)