Hi, On 19/12/18 3:41 PM, Yogesh Narayan Gaur wrote: > Add support for octal mode IO data transfer. > Micron flash, mt35xu512aba, supports octal mode data transfer and > NXP FlexSPI controller supports 8 data lines for data transfer (Rx/Tx). > > Patch series > * Add support for octal mode flags and parsing of same in spi driver. > * Add parsing logic for spi-mem framework and m25p80.c device file. > * Add opcodes for octal I/O commands in spi-nor framework, Read and Write proto for (1-1-8/1-8-8) mode. > Opcodes are added as per octal data IO commands required for mt35xu512aba [1] flash. > * Add mode bit required for octal mode in nxp-fspi driver [2]. > * Define binding property 'spi-rx/tx-bus-width' for LX2160ARDB target [2]. > > Tested on LX2160ARDB target with nxp-fspi driver, below are > Read performance number of 1-1-1 and 1-1-8 read protocol. > > root@lxxx:~# cat /proc/mtd > dev: size erasesize name > mtd0: 04000000 00001000 "spi0.0" > mtd1: 04000000 00001000 "spi0.1" > root@lxxx:~# time mtd_debug read /dev/mtd0 0x0 0x1000000 0read > Copied 16777216 bytes from address 0x00000000 in flash to 0read > > real 0m2.792s > user 0m0.000s > sys 0m2.790s > root@lxxx:~# time mtd_debug read /dev/mtd1 0x0 0x1000000 0read > Copied 16777216 bytes from address 0x00000000 in flash to 0read > > real 0m0.441s > user 0m0.000s > sys 0m0.440s > root@ls1012ardb:~# > > > Flash device MTD0 configured in 1-1-1 protocol. > Flash device MTD1 configured in 1-1-8 protocol. > > [1] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=70384&state=* > [2] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=76402 > > Yogesh Gaur (7): > spi: add support for octal mode I/O data transfer > spi: spi-mem: add support for octal mode I/O data transfer These two patches are already merged and is now part of linux-next[1]. Its preferred to send patches based on top of latest linux-next so as to avoid resending patches that have already been picked up by the maintainer. [1] commit 6b03061f882de49b83ccf44beb3a12c920a2da1b Author: Yogesh Narayan Gaur <yogeshnarayan.gaur@xxxxxxx> Date: Mon Dec 3 08:39:06 2018 +0000 spi: add support for octal mode I/O data transfer commit b12a084c8729ef423089bb9a5a143eed39cd94e7 Author: Yogesh Narayan Gaur <yogeshnarayan.gaur@xxxxxxx> Date: Mon Dec 3 08:39:12 2018 +0000 spi: spi-mem: add support for octal mode I/O data transfer Regards Vignesh > mtd: spi-nor: add opcodes for octal Read/Write commands > mtd: spi-nor: add octal read flag for flash mt35xu512aba > mtd: m25p80: add support of octal mode I/O transfer > spi: nxp-fspi: add octal mode flag bit for octal support > arm64: dts: lx2160a: update fspi node > > Changes for v6: > - Correct S-o-b tag with full author name as 'Yogesh Narayan Gaur'. > - Rebase on top of v4.20-rc5. > Changes for v5: > - Modified string 'octo' as 'octal' in all patches. > Changes for v4: > - Rebase on top of v4.20-rc2. > - Modify octo entries enum value in spi.h. > Changes for v3: > - Add octo mode support in spi_setup(). > - Rename all patches with 'octal' string modified as 'octo'. > Changes for v2: > - Incorporated review comments of Boris and Vignesh. > > Yogesh Gaur (7): > spi: add support for octal mode I/O data transfer > spi: spi-mem: add support for octal mode I/O data transfer > mtd: spi-nor: add opcodes for octal Read/Write commands > mtd: spi-nor: add octal read flag for flash mt35xu512aba > mtd: m25p80: add support of octal mode I/O transfer > spi: nxp-fspi: add octal mode flag bit for octal support > arm64: dts: lx2160a: update fspi node > > arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 4 ++++ > drivers/mtd/devices/m25p80.c | 9 ++++++++- > drivers/mtd/spi-nor/spi-nor.c | 19 ++++++++++++++++--- > drivers/spi/spi-mem.c | 9 ++++++++- > drivers/spi/spi-nxp-fspi.c | 4 ++-- > drivers/spi/spi.c | 12 ++++++++++-- > include/linux/mtd/spi-nor.h | 16 ++++++++++++---- > include/linux/spi/spi.h | 4 +++- > 8 files changed, 63 insertions(+), 14 deletions(-) > -- Regards Vignesh
