From: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> To: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>, "boris.brezillon@bootlin.com" <boris.brezillon@bootlin.com>, "marek.vasut@gmail.com" <marek.vasut@gmail.com>, "vigneshr@ti.com" <vigneshr@ti.com>, "linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org> Cc: "robh@kernel.org" <robh@kernel.org>, "mark.rutland@arm.com" <mark.rutland@arm.com>, "shawnguo@kernel.org" <shawnguo@kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "computersforpeace@gmail.com" <computersforpeace@gmail.com>, "frieder.schrempf@exceet.de" <frieder.schrempf@exceet.de>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> Subject: [PATCH v2 1/7] spi: add support for octal I/O data transfer Date: Mon, 15 Oct 2018 12:14:03 +0000 [thread overview] Message-ID: <1539605534-22302-2-git-send-email-yogeshnarayan.gaur@nxp.com> (raw) In-Reply-To: <1539605534-22302-1-git-send-email-yogeshnarayan.gaur@nxp.com> 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> --- Changes for v2: Incorporated review comments of Boris. 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; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: yogeshnarayan.gaur@nxp.com (Yogesh Narayan Gaur) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/7] spi: add support for octal I/O data transfer Date: Mon, 15 Oct 2018 12:14:03 +0000 [thread overview] Message-ID: <1539605534-22302-2-git-send-email-yogeshnarayan.gaur@nxp.com> (raw) In-Reply-To: <1539605534-22302-1-git-send-email-yogeshnarayan.gaur@nxp.com> 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> --- Changes for v2: Incorporated review comments of Boris. 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; -- 2.7.4
next prev parent reply other threads:[~2018-10-15 12:14 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-10-15 12:13 [PATCH v2 0/7] spi: add support for octal mode Yogesh Narayan Gaur 2018-10-15 12:13 ` Yogesh Narayan Gaur 2018-10-15 12:13 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur [this message] 2018-10-15 12:14 ` [PATCH v2 1/7] spi: add support for octal I/O data transfer Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` [PATCH v2 2/7] spi: spi-mem: " Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` [PATCH v2 3/7] mtd: spi-nor: add opcodes for octal Read/Write commands Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` [PATCH v2 4/7] mtd: spi-nor: add octal read flag for flash mt35xu512aba Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` [PATCH v2 5/7] mtd: m25p80: add support of octal I/O transfer Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` [PATCH v2 6/7] spi: nxp-fspi: add mode flag bit for octal support Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` [PATCH v2 7/7] arm64: dts: lx2160a: update fspi node Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-15 12:14 ` Yogesh Narayan Gaur 2018-10-22 12:40 ` [PATCH v2 0/7] spi: add support for octal mode Boris Brezillon 2018-10-22 12:40 ` Boris Brezillon 2018-10-22 12:40 ` Boris Brezillon -- strict thread matches above, loose matches on Subject: below -- 2018-10-15 11:47 Yogesh Narayan Gaur 2018-10-15 11:48 ` [PATCH v2 1/7] spi: add support for octal I/O data transfer Yogesh Narayan Gaur 2018-10-15 11:48 ` Yogesh Narayan Gaur 2018-10-15 11:48 ` Yogesh Narayan Gaur
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