| Message ID | 1535711404-29528-1-git-send-email-yogeshnarayan.gaur@nxp.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | spi: spi-mem: Add a driver for NXP FlexSPI controller | expand |
Hi Yogesh, On Fri, 31 Aug 2018 15:59:57 +0530 Yogesh Gaur <yogeshnarayan.gaur@nxp.com> wrote: > - Add a driver for NXP FlexSPI host controller > > FlexSPI is a flexsible SPI host controller [1], Chapter 30 page 1475, > which supports two SPI channels and up to 4 external devices. > Each channel supports Single/Dual/Quad/Octal mode data transfer (1/2/4/8 bidirectional data lines) > i.e. FlexSPI acts as an interface to external devices, maximum 4, each with up to 8 > bidirectional data lines. > > FlexSPI controller is similar to the existing Freescale/NXP QuadSPI > controller with advanced features. > > - Tested this driver with mtd_debug(Erase/Write/Read) utility and JFFS2 > filesystem mounting and booting on NXP LX2160ARDB[2] and LX2160AQDS targets. > LX2160ARDB is having two NOR slave device connected on single bus A > i.e. A0 and A1 (CS0 and CS1). > LX2160AQDS is having two NOR slave device connected on separate buses > one flash on A0 and second on B1 i.e. (CS0 and CS3). > Verified this driver on following SPI NOR flashes: > Micron, mt35xu512aba[3], [Read - 1 bit mode] > Cypress, s25fl512s, [Read - 1/2/4 bit mode] > > Patch 1 adds variable size in spi_device struct, to save the > size of connected slave device. > Patch 2 adds flags for octal I/O data transfer. > Support for octal flash commands and other framework changes would going to be done in different > patch set. > Patch 3 adds a driver for the NXP FlexSPI controller, driver is based on > new spi-mem framework. Can we please omit octa mode support for now and focus on single/dual/quad SPI support? That is, drop patch 2, and do not set the OCTAL flags in patch 3. Regards, Boris > Patch 4 add binding file for this driver. > Patch 5 add device node property for FlexSPI driver for lx2160 SoC. > Patch 6 enables the config option. > Patch 7 add MAINTAINERS file. > > [1] https://www.nxp.com/docs/en/reference-manual/IMXRT1050RM.pdf > [2] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=9721 > [3] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=63445 > > This series adds below patches: > Yogesh Gaur (7): > spi: add slave device size in spi_device struct > spi: add flags for octal I/O data transfer > spi: spi-mem: Add a driver for NXP FlexSPI controller > dt-bindings: spi: add binding file for NXP FlexSPI driver > arm64: dts: lx2160a: add fspi node property > arm64: defconfig: enable NXP FlexSPI driver > MAINTAINERS: add maintainers for the NXP FlexSPI driver > > .../devicetree/bindings/spi/spi-nxp-fspi.txt | 42 + > MAINTAINERS | 6 + > arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 21 + > arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 12 + > arch/arm64/configs/defconfig | 1 + > drivers/mtd/devices/m25p80.c | 6 + > drivers/mtd/spi-nor/spi-nor.c | 2 + > drivers/spi/Kconfig | 10 + > drivers/spi/Makefile | 1 + > drivers/spi/spi-nxp-fspi.c | 1242 ++++++++++++++++++++ > include/linux/spi/spi.h | 4 + > 11 files changed, 1347 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt > create mode 100644 drivers/spi/spi-nxp-fspi.c >
- Add a driver for NXP FlexSPI host controller FlexSPI is a flexsible SPI host controller [1], Chapter 30 page 1475, which supports two SPI channels and up to 4 external devices. Each channel supports Single/Dual/Quad/Octal mode data transfer (1/2/4/8 bidirectional data lines) i.e. FlexSPI acts as an interface to external devices, maximum 4, each with up to 8 bidirectional data lines. FlexSPI controller is similar to the existing Freescale/NXP QuadSPI controller with advanced features. - Tested this driver with mtd_debug(Erase/Write/Read) utility and JFFS2 filesystem mounting and booting on NXP LX2160ARDB[2] and LX2160AQDS targets. LX2160ARDB is having two NOR slave device connected on single bus A i.e. A0 and A1 (CS0 and CS1). LX2160AQDS is having two NOR slave device connected on separate buses one flash on A0 and second on B1 i.e. (CS0 and CS3). Verified this driver on following SPI NOR flashes: Micron, mt35xu512aba[3], [Read - 1 bit mode] Cypress, s25fl512s, [Read - 1/2/4 bit mode] Patch 1 adds variable size in spi_device struct, to save the size of connected slave device. Patch 2 adds flags for octal I/O data transfer. Support for octal flash commands and other framework changes would going to be done in different patch set. Patch 3 adds a driver for the NXP FlexSPI controller, driver is based on new spi-mem framework. Patch 4 add binding file for this driver. Patch 5 add device node property for FlexSPI driver for lx2160 SoC. Patch 6 enables the config option. Patch 7 add MAINTAINERS file. [1] https://www.nxp.com/docs/en/reference-manual/IMXRT1050RM.pdf [2] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=9721 [3] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=63445 This series adds below patches: Yogesh Gaur (7): spi: add slave device size in spi_device struct spi: add flags for octal I/O data transfer spi: spi-mem: Add a driver for NXP FlexSPI controller dt-bindings: spi: add binding file for NXP FlexSPI driver arm64: dts: lx2160a: add fspi node property arm64: defconfig: enable NXP FlexSPI driver MAINTAINERS: add maintainers for the NXP FlexSPI driver .../devicetree/bindings/spi/spi-nxp-fspi.txt | 42 + MAINTAINERS | 6 + arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 21 + arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 12 + arch/arm64/configs/defconfig | 1 + drivers/mtd/devices/m25p80.c | 6 + drivers/mtd/spi-nor/spi-nor.c | 2 + drivers/spi/Kconfig | 10 + drivers/spi/Makefile | 1 + drivers/spi/spi-nxp-fspi.c | 1242 ++++++++++++++++++++ include/linux/spi/spi.h | 4 + 11 files changed, 1347 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt create mode 100644 drivers/spi/spi-nxp-fspi.c